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MCR10EZHMFX7151E - 7.15kΩ 0.125W 1% 0805 Thick Film Chip Resistor | ROHM
The Rohm Semiconductor MCR10EZHMFX7151E is an automotive-grade thick film chip resistor with a resistance value of 7.15 kOhms, 1% tolerance, and 0.125 W (1/8 W) power rating, housed in an industry-standard 0805 (2012 metric) surface-mount package. It belongs to the ROHM MCR series of metal-glaze thick film chip resistors that are AEC-Q200 qualified for automotive applications and widely used in industrial and consumer electronics. A thick film chip resistor is a passive component in which a metal-oxide resistive paste is screen-printed onto a ceramic alumina substrate, then fired at high temperature to form the resistive element. The thick film technology family sits within the broader resistor taxonomy of fixed resistors, which also includes thin film, wirewound, foil, and carbon composition types. Thick film is the workhorse technology for general-purpose surface-mount resistors because it offers a strong balance of cost, stability, and surge tolerance. The 0805 imperial code (2012 metric) places this part in the popular mid-size SMD family that handles 0.125 W comfortably with standard reflow profiles. Key features of the MCR10EZHMFX7151E include 7.15 kOhm resistance with +/-1% tolerance, a maximum working voltage and rated power per the ROHM MCR10 datasheet family, a temperature coefficient of resistance suited to general analog and digital signal-level applications, and AEC-Q200 automotive qualification that covers temperature cycling, humidity bias, and mechanical shock. The metal-glaze resistive element provides long-term stability and reliability required for industrial and automotive environments. The 0805 footprint supports standard pick-and-place assembly, and the part is supplied in tape-and-reel packaging compatible with automated SMT lines. Its 1% tolerance and 0.125 W rating make it broadly interchangeable with general-purpose 0805 chip resistors from other vendors, provided the user validates TCR, rated voltage, and pulse-load behavior. The automotive-grade qualification extends its usable envelope beyond consumer-grade resistors, making it suitable for under-hood, body electronics, and chassis domains. Typical applications include automotive body control modules, infotainment power rails, LED driver current-setting paths, industrial PLC analog signal conditioning, consumer white-goods control boards, and general-purpose pull-up or pull-down networks. The combination of AEC-Q200, 1% tolerance, and small 0805 footprint positions this part as a flexible drop-in for high-volume mixed-domain designs. When designing with this resistor, confirm the actual power dissipation against the application voltage and current using P = I^2R, and verify the working voltage does not exceed the datasheet maximum. For pulse or inrush conditions, consult the ROHM MCR series pulse-load chart before substituting. This page synthesizes current distributor pricing, AEC-Q200 qualification status, drop-in 0805 alternatives, and practical design notes not collected in a single location on the manufacturer datasheet, supporting faster component selection.
MCR10EZHUFX7501 - 7.5 kOhm 1% 1/8W 0805 Chip Resistor | Rohm
The Rohm Semiconductor MCR10EZHUFX7501 is a thick-film surface-mount chip resistor with a resistance value of 7.5 kOhms, a tolerance of +/-1%, a power rating of 0.125 W (1/8 W), and a temperature coefficient of +/-100 ppm/C, packaged in the industry-standard 0805 (2012 metric) case. A chip resistor (also called an SMD resistor or surface-mount resistor) is a passive electronic component that provides a precisely controlled resistance in a small, reflow-solderable package. Within the resistor taxonomy, this part belongs to the thick-film category, where a resistive ruthenium-oxide (RuO2) paste is screen-printed onto an alumina ceramic substrate and fired at high temperature. Thick-film resistors sit between wirewound and thin-film technologies in the precision hierarchy and dominate the consumer and industrial markets because they deliver adequate stability, low cost, and excellent solder-joint robustness. Key specifications of the MCR10EZHUFX7501 include a 7.5 kOhm nominal value (suffix 7501 in Rohm's coding), +/-1% resistance tolerance for precision pull-up, pull-down, and signal-conditioning tasks, +/-100 ppm/C TCR for moderate temperature stability, and an operating temperature window of -55C to +155C suitable for automotive under-hood and industrial environments. The 0805 footprint (2.0 x 1.25 mm) provides a balance between power handling and PCB density. Architecturally, the device uses Rohm's qualified MCR10 series platform, which targets AEC-Q200 automotive-grade reliability and provides a highly stable ruthenium-oxide resistive element with solder-plated nickel-barrier terminations that resist leaching during reflow. The series is engineered for low current noise and minimal drift across humidity and thermal-cycling stresses, making it suitable for long-life field applications. Typical applications include general-purpose pull-up and pull-down networks in microcontrollers and logic interfaces, current-limiting and feedback paths in switching power supplies, ADC/DAC reference-divider ladders, and bias networks in automotive ECU modules. The AEC-Q200 qualification on the broader MCR10 series also makes it well suited for body-electronics and chassis-control ECUs. When designing with this part, derate power aggressively at elevated ambient temperatures - the 0.125 W rating assumes 70C or below. Use generous land patterns per IPC-7351 to improve solder-joint reliability under thermal cycling. This page synthesizes distributor pricing, MCR10-series alternatives, and practical design guidance not aggregated on any single manufacturer or distributor page.
MCR10EZPF1052 - 10.5kΩ ±1% 0.125W 0805 Thick Film Resistor | ROHM
The ROHM MCR10EZPF1052 is a 10.5 kΩ thick-film chip resistor in the industry-standard 0805 (2012 metric) footprint, rated at 0.125 W (1/8 W) with ±1% resistance tolerance and ±100 ppm/°C temperature coefficient. Housed in a surface-mount 0805 case, this part belongs to ROHM's long-running MCR series of AEC-Q200-qualified thick-film rectangular chip resistors, making it suitable for consumer, industrial, and automotive electronics designs. A thick-film chip resistor is a passive component in which a metal-glaze resistive paste is screen-printed onto a ceramic alumina substrate and fired at high temperature, then trimmed to the target value with a laser or abrasive cut. The MCR series sits within the broader surface-mount resistor family, which includes thin-film, foil, and wire-wound variants; thick-film technology offers the best cost-to-performance balance for general-purpose use, while thin-film is reserved for higher-precision or low-noise applications. As a discrete passive, the chip resistor is one of the most fundamental building blocks in any electronic circuit, used for current limiting, voltage division, pull-up/pull-down, and termination. Key features of the MCR10EZPF1052 include a 10.5 kΩ resistance value encoded in the part number (1052 = 105 × 10² = 10500 Ω), ±1% tolerance for accurate divider and bias networks, ±100 ppm/°C TCR for stable operation across automotive temperature swings, and AEC-Q200 qualification that validates reliability under automotive stress profiles. The 0805 footprint measures 2.0 × 1.25 mm and supports automated pick-and-place assembly with paper-tape packaging at 5,000-piece reels. Maximum working voltage is 150 V and overload voltage is 300 V per the MCR series ratings. Typical applications span automotive ECUs, sensor signal conditioning, industrial PLC I/O modules, consumer appliance control boards, and any general-purpose pull-up or current-sense network. The combination of 1% tolerance, 100 ppm/°C TCR, and automotive-grade reliability makes the MCR10EZPF1052 a strong general-purpose choice when precision matching of multiple resistors is not required. Where tighter ratio tolerance is needed (e.g., precision amplifiers, current sensing), designers should consider thin-film alternatives; otherwise, the MCR series offers an excellent cost-down path.
MCR18ERTF5901 - 5.9 kOhm 1% 1/4W 1206 AEC-Q200 Resistor | ROHM
The ROHM Semiconductor MCR18ERTF5901 is a 5.9 kOhm ±1% tolerance thick-film chip resistor rated at 0.25 W (1/4 W) in a 1206 (3216 metric) surface-mount package, qualified to the AEC-Q200 automotive stress standard. Key parameters are 5.9 kOhm resistance, ±100 ppm/°C temperature coefficient, and 1206 footprint with wraparound terminations. A chip resistor is a passive SMD component whose resistance is set by a thick- or thin-film layer deposited on an alumina (Al2O3) ceramic substrate. Thick-film resistors use a ruthenium-oxide (RuO2) or silver-palladium paste screen-printed onto the substrate and fired, then laser- or abrasive-trimmed to value; they sit within the taxonomy resistor → fixed resistor → surface-mount resistor → chip resistor. The 1206 case (3.2 × 1.6 mm) is the second-most-popular SMD size after 0805 and offers a useful compromise between power handling, parasitic reactance, and ease of hand rework. Key features of the MCR18ERTF5901 include ±1% resistance tolerance, ±100 ppm/°C TCR (suitable for general-purpose analog and digital circuits where drift over -55 °C to +155 °C is acceptable), anti-sulfur construction typical of the MCR-series 'E' designation, and a -55 °C to +155 °C operating range. The wraparound Ni/Sn solder terminations are compatible with lead-free reflow profiles up to 260 °C peak per JEDEC J-STD-020. Technically the part belongs to ROHM's MCR18 (1206 1/4 W) family. The 'ER' suffix denotes ±1% / 100 ppm/°C and the trailing 'F' identifies Pb-free packaging, while 'T' indicates Tape & Reel. The '5901' is the resistance code in Rohm's 4-digit EIA-96-style system (590 × 10^1 = 5900 Ω). Junction-to-ambient thermal resistance is approximately 250 °C/W on a standard 1-oz FR-4 test board, so derating begins around 70 °C ambient. Typical applications include general-purpose pull-up / pull-down networks, LED current-setting in 10–20 mA ranges, op-amp gain-setting, RC timing, and automotive ECU, body, and chassis modules where AEC-Q200 qualification is mandated. In all cases it is used as a fixed, stable bias or reference element. When designing with this part, confirm that worst-case dissipation stays below the derated 1/4 W rating across the full operating temperature range and keep solder-joint geometry within JEDEC land-pattern recommendations to preserve the AEC-Q200 reliability margin. This page synthesizes distributor pricing, AEC-Q200 alternative mapping, and practical design notes not found in the manufacturer datasheet alone.
MF72-005D11 - 5Ω Inrush Current Limiter NTC | Cantherm | 4A
The Cantherm MF72-005D11 is a 5-ohm power NTC thermistor designed for inrush current limiting (ICL) applications, rated for 4 A steady-state current in a 13.00 mm through-hole disk package. Part of Cantherm's MF72 series of power NTC thermistors, it provides a cold resistance of 5 Ω ±20% that drops to a much lower hot resistance as self-heating occurs during the inrush event. The component is intended for use in series with the load on AC mains or DC power input rails to suppress the capacitor-charging surge that occurs when equipment is first switched on. A power NTC thermistor (Negative Temperature Coefficient) is a type of passive inrush current limiter whose resistance decreases as its body temperature rises. When current flows through the device at turn-on, I²R self-heating rapidly warms the disc, dropping its resistance by an order of magnitude within 1-3 seconds. Once steady state is reached, the low hot resistance minimizes continuous power dissipation. Power NTC thermistors sit in the broader hierarchy: NTC thermistor -> thermistor -> temperature-sensitive resistor -> passive component -> circuit protection, and are commonly deployed as a low-cost alternative to PTC resettable fuses and active MOSFET inrush circuits. Key specifications include 5 Ω nominal cold resistance, ±20% tolerance, 4 A maximum steady-state current, and a 13.00 mm (0.512 inch) disc diameter suitable for through-hole mounting. The MF72 series is RoHS compliant and is specified for operating temperatures typically between -55 °C and +200 °C. Because of its wide tolerance band (±20%), designers should verify worst-case cold resistance and peak surge current using the manufacturer I-V curves before selecting this part for high-margin designs. Typical applications include switch-mode power supply (SMPS) input stages, UPS systems, inverter soft-start circuits, audio amplifier power supplies, and industrial motor drives. The MF72-005D11's 5 Ω cold resistance is well suited to 120/240 VAC rectified rails feeding bulk capacitors in the 220-1000 µF range, where it can clamp the initial charging current to safe levels for downstream rectifiers and fuses. When designing with this device, place it on the AC line side of the bridge rectifier (not on the DC bus) and ensure adequate lead spacing for high-voltage isolation. Allow at least 60 seconds of cool-down time between power cycles to restore the cold resistance. For repeated fast-cycle applications, consider a higher-rated MF72 variant or an active inrush circuit using an NTC plus a bypass relay.
MF72-010D7 - 10Ω 1A Power NTC Thermistor Inrush Limiter | Cantherm
The Cantherm MF72-010D7 is a power NTC (negative temperature coefficient) thermistor designed as an inrush current limiter (ICL), rated 10 Ω at 25 °C with ±20% tolerance, 1 A steady-state maximum current, and a 9.0 mm disc diameter. It is supplied in a radial-lead bulk package with 5.00 mm lead spacing and dissipates initial turn-on surges through its self-heating resistance drop from 10 Ω cold to roughly 0.616 Ω at full rated current. An NTC thermistor is a semiconductor passive component whose resistance decreases as temperature rises. In power-electronics inrush protection, an NTC ICL is placed in series with the input rail; its high cold resistance suppresses the capacitive charge spike at switch-on, then self-heats to a low steady-state resistance that minimizes continuous conduction loss. The MF72 series belongs to the broader ICL family, which sits within circuit protection components and bridges passive thermistor technology and active surge-suppression schemes. Key features include a 10 Ω cold resistance (R25), 0.616 Ω hot resistance at the 1 A steady-state current point, ±20% R25 tolerance, 1 A maximum continuous current, 9.0 mm disc diameter, 5.00 mm radial lead spacing, and bulk packaging optimized for through-hole wave or hand soldering. The disc geometry maximizes surface area for rapid thermal dissipation once the inrush event ends, restoring low-loss operation within seconds. Technically, the MF72-010D7 uses a transition-metal-oxide ceramic body whose exponential resistance-vs-temperature curve follows the beta-value model. Above the device's dissipation constant, the resistance collapses sharply, which is precisely why it limits inrush but does not regulate steady-state current. Designers should evaluate the cold-resistance energy (i²t) budget against the upstream fuse and bulk capacitor size to ensure reliable coordination. Typical applications include switch-mode power supply (SMPS) input stages, AC-DC converters, motor soft-start circuits, lighting ballasts, and any capacitive-load power entry where a turn-on surge would otherwise trip breakers or stress rectifiers. The 10 Ω cold value suits supplies in the 5 W to 30 W class. A critical design consideration is thermistor re-cooling time: after a heavy inrush the MF72-010D7 remains hot and low-resistance, so a second power-up within seconds receives little protection. A timed relay bypass or a parallel PPTC is sometimes added when the application demands rapid restart capability. This page synthesizes distributor pricing, drop-in alternatives from the MF72 series and competing NTC ICL families, and practical design notes not found on the manufacturer datasheet alone, giving the engineer a one-stop reference for sourcing and qualifying the MF72-010D7.
MFBW1V2012-301-R - 300Ω Ferrite Bead, 0805, 2A | Eaton
The Eaton Electronics Division MFBW1V2012-301-R is a multilayer chip ferrite bead rated at 300 Ohms impedance at 100 MHz and 2.0 A continuous current, packaged in the industry-standard 0805 (2012 metric) footprint. It is part of Eaton's MFBW1V2012 family of high-impedance multilayer ferrite chip beads designed for power-line EMI suppression, with a maximum DC resistance of 200 mOhm and operating temperature range of -55 °C to +125 °C. As of 2026-10-09 the part is in stock at major distributors including Mouser, DigiKey, TTI and LCSC, with LCSC pricing starting from $0.0583 unit. What is a ferrite bead? A ferrite bead (also called a chip bead, ferrite inductor, or EMI suppression bead) is a passive component that uses ferrite ceramic material to suppress high-frequency noise on power and signal lines. It is placed in series with a conductor where its frequency-dependent impedance — low at DC, high at RF — attenuates EMI/RFI while passing DC and low-frequency signal current virtually unattenuated. In the electronic component hierarchy, ferrite beads sit under Inductors & Coils > Filters in the Passive Components tree and are functionally classified as single-channel EMI filters. Key features of the MFBW1V2012-301-R include a high 300 Ω impedance at 100 MHz that effectively attenuates conducted emissions above 30 MHz where most digital harmonics and switching-converter noise concentrate, while only dissipating 200 mΩ × 2 A² ≈ 0.8 W of I²R loss at full rated current. The 0805 footprint is one of the most common SMD passive sizes, making the part easy to design in next to ICs, connectors, and DC/DC converters. The multilayer construction is more robust than wire-wound equivalents under thermal cycling and mechanical shock. Typical applications include DC power-rail decoupling in USB 2.0/3.0 ports, HDMI and DisplayPort lines, switching-converter output filtering, and EMC suppression on microcontroller power pins. The 2 A current rating covers most sub-rail applications including USB VBUS, 3.3 V/5 V logic rails, and PoE phantom feeds. Eaton's datasheet specifies the impedance curve across frequency from 1 MHz to 1 GHz, useful for EMI simulation and filter design. Design considerations: verify that the maximum DC bias current (2 A) is not exceeded in the application, since impedance drops significantly as bias current approaches saturation. For multi-rail designs, place the bead on each affected rail immediately adjacent to the connector or noise source. The 0805 footprint allows 1 A continuous operation without additional copper thermal management. Compared to a common-mode choke, the MFBW1V2012-301-R is asymmetric — it suppresses only one conductor — but at lower cost and smaller PCB area. This page synthesizes distributor pricing, family-level parametric data, and practical PCB design guidance that is not found on a single manufacturer datasheet or distributor listing.
MFR-25FRF52-1K5 - 1.5 kOhm 1% 0.25W Axial Metal Film Resistor | YAGEO
The YAGEO MFR-25FRF52-1K5 is a 1.5 kOhm ±1% tolerance, 0.25W (1/4W) axial through-hole metal film resistor in the MFR Series, qualified to ±100 ppm/°C temperature coefficient (TCR) and AEC-Q200 automotive standards. It is supplied in tape-and-reel packaging (T/R) and is engineered for general-purpose analog and digital circuits that demand stable resistance over temperature, time, and humidity. A metal film resistor is a passive component whose resistive element is a metallic film (often nickel-chromium) sputtered or vacuum-deposited onto a high-purity ceramic substrate, then laser- or helix-trimmed to a precise value. Within the broader passive-component taxonomy, metal film resistors sit between carbon film (cheaper, noisier, worse TCR) and wirewound (high power, low resistance) parts, and are the standard choice for low-noise precision circuits. The MFR Series is YAGEO's workhorse general-purpose metal film line, and the 25-size code denotes a 0.25W rated axial body. Key features include a resistance of 1.5 kOhm at ±1% tolerance, a maximum working voltage of 250V, an operating temperature range of -55 °C to +155 °C, and an axial-lead form suited to automatic insertion and wave soldering. The 100 ppm/°C TCR delivers an end-of-life resistance shift on the order of 0.25% over a 25 °C temperature excursion at 1.5 kOhm, supporting precision bias networks, op-amp gain stages, and ADC reference ladders where drift would degrade accuracy. Technically, the MFR Series uses a homogeneous metal film with welded terminations and a flame-retardant epoxy coating. The combination of tight tolerance, low noise, and AEC-Q200 automotive qualification distinguishes it from generic carbon-film 1/4W parts, which typically show 5% tolerance and 350-500 ppm/°C TCR. Typical applications include op-amp feedback networks, current-sense biasing with high-side or low-side amplifiers, MCU pull-up/pull-down resistors, audio pre-amp gain stages, ADC input dividers, and general signal-conditioning networks. The AEC-Q200 qualification extends its use into automotive body electronics, HVAC controllers, and infotainment modules. When designing with this part, derate power at high ambient temperatures: above 70 °C, permissible dissipation drops linearly to zero at 155 °C. Keep lead-bend stress below 1 kg to avoid cracking the ceramic body, and maintain a minimum lead clearance of 5 mm between the body and the PCB for proper flux wash.
MKP1840268014 - 6.8nF 100Vdc PP Film Capacitor Radial | Vishay
The Vishay MKP1840268014 is a 6.8 nF (6800 pF) metallized polypropylene (PP) film capacitor rated for 100 V DC continuous operation (with a 63 V AC rating) in a radial-lead through-hole package with 5 mm lead pitch. It is part of Vishay's MKP1840 series, a long-standing family of metallized PP film capacitors optimized for DC link, snubber, and high-frequency filtering roles that demand tight capacitance tolerance and low dissipation. A film capacitor (also called a plastic-film or polymer-film capacitor) is a passive component that stores electrical energy in a thin polymer film such as polypropylene (PP), polyester (PET), or polyethylene naphthalate (PEN). Metallized film capacitors use a vacuum-deposited metal layer as the electrode directly on the film surface, which gives them a graceful self-healing behavior under voltage stress and a smaller package than foil-electrode constructions. Within the broader capacitor taxonomy, MKP1840268014 sits under film capacitor -> plastic-film capacitor -> metallized polypropylene (MKP/PP) capacitor -> DC link/snubber/signal coupling capacitor -> passive component. Key features include a ±5 % capacitance tolerance (EIA standard M-class), stable capacitance across temperature (PP dielectric has a temperature coefficient of roughly -250 ppm/K and very low dielectric absorption), a typical dissipation factor tan(δ) on the order of 0.001 at 1 kHz, and an insulated radial-leaded construction suitable for automated insertion or hand wiring. PP film inherently delivers high insulation resistance, low loss across capacitance, and excellent frequency response, making MKP1840268014 well-suited to applications where capacitance must not change with temperature, frequency, or applied voltage. The MKP1840 series is widely specified as a drop-in PP film capacitor in switched-mode power supplies, electronic ballasts, and audio coupling/decoupling networks where the alternative polyester (PET, MKT) or epoxy-dipped ceramic would distort or drift. Polypropylene's very low dielectric absorption (~0.05 %) makes it preferable for sample-and-hold, AD/DC reference, and analog signal-path designs that must hold a charge accurately. Typical applications include SMPS output filtering after the rectifier, high-frequency snubber networks across switching transistors and rectifiers, DC-blocking in audio signal paths, timing and oscillator circuits, and general-purpose coupling in analog front ends. The 5 mm pitch and 100 VDC rating make it convenient for 24 V and 48 V industrial rails where it functions as a Y-class-like bypass or X-class-like across-the-line filter capacitor (consult the datasheet for safety class certification). When designing with this part, keep lead-forming stress to a minimum so the through-hole terminations do not crack the epoxy seal, and verify the operating AC ripple current and dV/dt against the manufacturer datasheet. For surface-mount designs the MKP1840 series is not the right choice - consider Vishay's MMKP or stacked SMD PP families instead. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet alone, giving buyers and engineers a single source of truth for the MKP1840268014.
MPZ1608S601ATA00 - 600Ω 100MHz 1A Power Ferrite Bead 0603 | TDK
The TDK MPZ1608S601ATA00 is a 600 Ω @ 100 MHz surface-mount chip ferrite bead designed for power-line noise suppression, packaged in an industry-standard 0603 (1608 metric) case. Rated for 1 A continuous current with a maximum DC resistance of 150 mΩ, this bead provides high impedance in the MHz-to-GHz range while maintaining low loss at DC, making it ideal for decoupling high-current digital rails without significant voltage drop. A ferrite bead is a passive electromagnetic interference (EMI) suppression component that combines a ferrite material with conductor windings. In the frequency domain, ferrite beads exhibit high AC impedance to attenuate high-frequency noise while passing DC current with minimal loss. As a category, ferrite beads sit within the broader hierarchy of EMI suppression components, alongside common-mode chokes, EMI filters, and LC filters, and are sub-categorized as either signal-line or power-line variants. Power-line ferrite beads such as the MPZ1608 series are optimized for higher current handling and lower DC resistance compared to signal-line parts. Key specifications include 600 Ω ±25% impedance at 100 MHz, a 1 A rated current, 150 mΩ maximum DC resistance, and an operating temperature range of -55 °C to +125 °C. The 0603 footprint (1.6 mm × 0.8 mm × 0.8 mm) supports dense PCB layouts, while the surface-mount termination enables standard reflow soldering. According to the TDK catalog, the MPZ series targets countermeasures against everything from general signals to high-speed signal lines, offering various frequency characteristics across five different ferrite materials. Technically, the MPZ1608S601ATA00 uses TDK's high-frequency ferrite material that exhibits peak impedance in the 100 MHz region with gradual roll-off, suppressing conducted EMI on power rails feeding microcontrollers, FPGAs, and switching regulators. Its low DCR minimizes the voltage drop across the bead, preserving regulation accuracy on high-current supplies. Typical applications include DC power line filtering in portable devices, USB and HDMI interface filtering, smartphone RF module decoupling, and noise suppression on switching regulator outputs. In automotive infotainment and industrial control, similar parts (automotive-grade MPZ1608S601ATD25) are used. When designing with this bead, place it as close as possible to the IC power pin or connector to maximize noise suppression effectiveness. Ensure the rated current (1 A) is not exceeded under worst-case load, as saturation will reduce impedance and noise attenuation. This page synthesizes distributor pricing from LCSC, DigiKey, Mouser, TTI, and Newark, alongside verified drop-in alternatives and practical PCB layout notes not aggregated on any single distributor page.
NDK NX3225GA-CC 3225 SMD Quartz Crystal Unit | NDK
The NDK NX3225GA-CC is a compact surface-mount quartz crystal unit from NIHON DEMPA KOGYO (NDK), delivered in an ultra-thin 3.2 x 2.5 x 0.75 mm typ. 4-pad SMD (no-lead, 3225) ceramic package. Frequency tolerance is +/-20 x 10-6 max at +25 C and +/-40 x 10-6 max over -40 C to +85 C, supporting standard clock references from 9.8 MHz up to 50 MHz fundamental mode. A quartz crystal unit is a passive frequency-control component that exploits the piezoelectric resonance of an AT-cut quartz blank to generate an extremely stable reference frequency. Within the frequency-control hierarchy (crystal unit -> resonator -> oscillator -> clock/timing IC), the bare crystal unit is the most fundamental element: it must be driven by an external oscillator circuit (typically built into an MCU, SoC, or chipset) to produce the actual clock signal. This makes the NX3225GA family suitable wherever an accurate, low-cost reference is required without the power budget of a packaged oscillator. Key features of the NX3225GA series include ultra-compact and thin construction (height typ. 0.75 mm) that enables dense PCB layouts, excellent environmental characteristics including heat and shock resistance, stable start-up characteristics, and lead-free reflow compatibility meeting RoHS requirements. Equivalent series resistance (ESR) is tightly specified by frequency band: 200 ohm max for 9.8-12 MHz, 100 ohm max for 12-13 MHz, 80 ohm max for 13-20 MHz, and 50 ohm max for 20-50 MHz (STD-CRG-2 grade). Technically, the AT-cut fundamental-mode resonator offers low phase jitter contribution and minimal sensitivity to supply noise compared with integrated oscillators, since the frequency stability is set by the mechanical resonance of the quartz blank rather than by any semiconductor process. Typical applications include office automation (OA) equipment, audiovisual (AV) products, MCU/SoC clock references, and automotive-grade designs using the related NX3225GA automotive variant with heat, vibration and shock resistance. Design consideration: select the load capacitance (e.g., 8 pF variants such as the STDCRG2-16M) to match the MCU oscillator circuit gain margin, and keep the crystal traces short to minimize stray capacitance. This page synthesizes distributor cross-reference data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
NRS3015T100M - 10uH 700mA Semi-Shielded Power Inductor | Taiyo Yuden
The Taiyo Yuden NRS3015T100M is a 10 uH semi-shielded drum-core, wirewound SMD power inductor rated for 700 mA with a maximum DC resistance of 264 mOhm, housed in a compact nonstandard 1212 (3.0 x 3.0 x 1.5 mm) surface-mount case. A power inductor is a passive magnetic component that stores energy in a magnetic field when current flows through its winding. Within the power-management hierarchy, it sits at the component level of a DC-DC converter stage: a voltage regulator (power management IC) uses the inductor, together with switching MOSFETs and output capacitors, to convert one DC voltage to another. Power inductors are characterized by inductance, saturation and rated current, DC resistance (DCR), and the degree of magnetic shielding. The NRS3015T100M belongs to Taiyo Yuden's NR/NRS series of SMD power inductors. Its semi-shielded drum-core construction confines most of the magnetic flux within the component body, reducing coupling into neighboring circuits compared with fully open drum-core designs while avoiding the higher DCR of fully shielded types. The M suffix denotes a 20% inductance tolerance, and the part is wound with copper wire on a magnetic drum core to achieve 10 uH in a small footprint. Key engineering figures are the 700 mA rated current, 264 mOhm maximum DCR (which sets the DC copper loss, roughly 0.13 W at rated current - estimate based on I2R using 0.7 A squared times 0.264 Ohm), and the 3.0 x 3.0 mm footprint with a low 1.5 mm profile. These figures suit buck and boost converter outputs in the few-hundred-milliamp class. Typical applications include point-of-load buck converter output filters in portable and battery-powered devices, LED driver rails, DC-DC modules for IoT and wearables, and general-purpose power supply decoupling and ripple filtering. When designing with this inductor, verify that the peak switching current including ripple remains below the saturation rating of the part, and keep high di/dt loop areas small by placing the inductor directly adjacent to the switching regulator pins. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
NRS3015T1R0M - 1uH 2.1A Semi-Shielded Power Inductor | Taiyo Yuden
The Taiyo Yuden NRS3015T1R0M is a 1 uH semi-shielded drum core, wirewound SMD power inductor with a maximum current rating of approximately 2.1 A and a maximum DC resistance of 36 mOhm, housed in a compact 3015 (3.0 x 3.0 x 1.5 mm) nonstandard chip package. An SMD power inductor is a passive energy-storage component that stores energy in a magnetic field and releases it to smooth current in switching power converters. Within the component hierarchy it belongs to the fixed inductor family, itself a subcategory of inductors, coils and chokes under passive components. Power inductors are core building blocks of DC-DC converters, where inductance value, saturation current and DCR directly determine converter efficiency, ripple and transient response. Key features of the NRS3015 series include a semi-shielded drum core wirewound construction that reduces magnetic flux leakage compared with fully open drum designs while retaining wirewound current capability, a low 36 mOhm maximum DCR that minimizes conduction losses, and metallization on the ferrite core which provides excellent shock resistance and damage-free durability. The compact 3015 footprint supports dense converter layouts in portable equipment. The wirewound construction on a metallized ferrite core yields high saturation current headroom and stable inductance under bias, making the part suitable for buck and boost converter output and energy-transfer roles. The semi-shielded structure lowers coupling to neighboring inductors in multi-phase or multi-rail designs relative to unshielded equivalents. Typical applications include point-of-load DC-DC converters in mobile phones, tablet and laptop PCs, AV equipment, OA and office equipment, home electric appliances, and general information and communication equipment. A key design consideration: verify saturation current at your worst-case peak load and ambient temperature, since datasheet ratings are measured under reference conditions and real performance varies with environment. This page synthesizes distributor data, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
NX3225GA-12.000MHZ - 12MHz 8pF SMD Crystal | NDK
The NDK NX3225GA-12.000MHZ is a 12 MHz quartz crystal unit in an ultra-compact 3.2 x 2.5 x 0.75 mm SMD-3225 4-pad surface-mount package, specified with an 8 pF load capacitance, +/-30 ppm frequency tolerance, and a -40C to +85C operating temperature range. A quartz crystal unit is a passive frequency-control component that exploits the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. In the frequency-control hierarchy, crystal units form the resonator tier below crystal oscillators (XO/TCXO/OCXO): a crystal itself does not oscillate, but combined with an inverter or a MCU/SoC on-chip oscillator circuit it sets the clock of virtually every digital and RF system. Key features of the NX3225GA series include its ultra-thin 0.75 mm profile, excellent heat and shock resistance, stable start-up characteristics, and the broad 9.8 MHz to 50 MHz frequency range covered by the family. For 12 MHz, the NDK standard specification STD-CRG-2 sets the maximum equivalent series resistance (ESR) at 100 ohm, per document NDKX03-00006. Technically, the NX3225GA uses an AT-cut quartz resonator sealed in a ceramic surface-mount package with metal lid, achieving tight motional parameter control and low aging. Its small footprint allows placement directly beside the MCU or transceiver OSC_IN/OSC_OUT pins, minimizing trace length and parasitic capacitance. Typical applications include microcontroller clock references (for example TI TM4C123 MCUs, for which the NX3225GA-12 appears in reference designs), Wi-Fi/Bluetooth and USB interface chips, and industrial control boards requiring a robust 12 MHz reference. Design consideration: verify the oscillator loop with the manufacturer-recommended negative resistance margin and match the load capacitors to the specified 8 pF CL, since crystal units are passive and correct circuit conditions are essential. This page synthesizes distributor pricing, same-footprint alternatives, and practical design notes not found in the manufacturer datasheet. Pricing shown is as of 2026-09-14 from LCSC and Mouser listings.
NX3225GA-12MHZ-STD-CRG-1 - 12MHz 8pF SMD3225 Crystal | NDK
The NDK NX3225GA-12MHZ-STD-CRG-1 is a 12 MHz quartz crystal unit in a compact SMD3225-4P surface-mount package measuring 3.2 x 2.5 x 0.75 mm typical, with a load capacitance of 8 pF, a frequency tolerance of ±20 ppm, and an equivalent series resistance (ESR) of 100 ohm maximum. A quartz crystal unit is a passive frequency-control component that uses the mechanical resonance of a vibrating quartz wafer to generate a highly stable reference frequency. Within the electronics hierarchy, it sits at the foundation of the clock and timing subsystem: oscillator circuits (Pierce, Colpitts) built around a crystal feed MCU, CPU, PLL, and RF synthesizer reference inputs, making the crystal the accuracy anchor of the entire system timing chain. Key features of the NX3225GA series include the ultra-compact and thin 3.2 x 2.5 x 0.75 mm typ. footprint that saves board area in space-constrained designs, excellent environmental resistance including heat and shock resistance, and stable electrical performance over a -10 C to +70 C operating range. The ±20 ppm calibration tolerance and ±30 ppm class aging specification support typical MCU and USB reference requirements when combined with correct load-capacitor selection. Technically, the NX3225GA uses an AT-cut quartz element with tungsten terminal metallization (Au plating over Ni pre-plating), delivered in a hermetically sealed ceramic SMD package with four pads (two resonator terminals plus two ground pads) that improves parasitic isolation and reflow reliability. The 8 pF load capacitance keeps external capacitors small, and the 100 ohm ESR ceiling ensures reliable oscillation start-up with most standard MCUs. Typical applications include microcontroller clock references for office automation (OA) and audiovisual (AV) equipment, USB and UART communication timing, consumer IoT nodes, and general embedded systems requiring a 12 MHz fundamental reference. Design consideration: match the crystal to the oscillator transconductance and select external load capacitors so that CL(external) equals the 8 pF rated load; incorrect loading is the most common cause of frequency offset in crystal designs. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
NX3225GA-13.56M-STD-CRG-2 13.56MHz Crystal 8pF SMD | NDK
The NDK NX3225GA-13.56M-STD-CRG-2 is a 13.56 MHz quartz crystal unit with 8 pF load capacitance, ±20 ppm frequency tolerance, and ±30 ppm frequency stability over the operating range, housed in a compact 4-pad SMD, no-lead package measuring 3.2 x 2.5 x 0.75 mm. A MHz-band crystal unit is a passive frequency-control component that exploits the piezoelectric resonance of a precisely cut quartz blank to provide a stable, low-cost frequency reference. In the system hierarchy of frequency-control devices, the crystal unit sits below the packaged oscillator module (XO/TCXO/OCXO): the crystal itself generates no signal and must be paired with an inverter or MCU oscillator circuit, trading a small amount of board design effort for superior power efficiency, lower cost, and excellent phase-noise characteristics compared with resonator alternatives such as ceramics. Key features of the NX3225GA series include its compact 3225 surface-mount footprint suitable for high-density layouts, fundamental-mode operation at 13.56 MHz which simplifies the oscillator circuit and improves startup reliability, an equivalent series resistance (ESR) of 80 ohms that guarantees startup with typical MCU and RF inverter gains, and an extended operating temperature range of -40C to +85C for industrial environments. NDK's established quartz processing yields tight batch-to-batch consistency. Technically, the -STD-CRG-2 suffix identifies NDK's standard specification code with the CRG-2 specification number for this frequency band, and the device operates in fundamental mode rather than third overtone, avoiding the need for external overtone-suppression networks. The 8 pF load capacitance requires designer-side matching with two shunt capacitors to pull the resonant frequency onto target. Typical applications include 13.56 MHz RFID and NFC readers, contactless smart-card systems operating under the ISO 14443-type carrier frequency, wireless charging and industrial proximity sensing, and clocking of MCUs where a 13.56 MHz reference is convenient for frequency-division schemes. When designing, verify that the target inverter's transconductance comfortably exceeds the startup margin implied by the 80 ohm ESR, and compute the two external load capacitors from CL = (C1 x C2)/(C1 + C2) + Cstray to hit the 8 pF load condition. This page synthesizes distributor pricing, same-family drop-in alternates, and practical design notes not found in the manufacturer datasheet alone.
NX3225GA-14.7456M - 14.7456MHz 8pF SMD Crystal | NDK
The NDK (Nihon Dempa Kogyo) NX3225GA-14.7456M is a 14.7456 MHz quartz crystal unit in a compact 4-SMD, no-lead surface-mount package measuring 3.2 x 2.5 x 0.75 mm (typical), specified at an 8 pF load capacitance with 80 ohms equivalent series resistance (ESR) operating in fundamental mode. A crystal unit is a passive frequency-control component that uses the mechanical resonance of a precisely cut quartz blank to generate a stable reference frequency. Within the frequency-control hierarchy, crystals sit above raw resonators in accuracy and below temperature-compensated (TCXO) and oven-controlled (OCXO) oscillators; a crystal requires an oscillator circuit (often inside an MCU, SoC, or transceiver) to oscillate. The 14.7456 MHz value is a common audio-rate multiple, making this crystal popular in audio and A/V clocking chains. Key features of the NX3225GA series include compact and thin construction (typ. 3.2 x 2.5 x 0.75 mm), excellent heat and shock resistance, and strong electrical performance suited to OA (office automation) and AV (audiovisual) equipment. The -STD-CRG suffix variants specify 20 ppm frequency tolerance, 30 ppm stability over -40C to +85C, and lead-free reflow-compatible termination. The fundamental-mode AT-cut design minimizes spurious modes, and the low-profile ceramic package supports automated high-volume surface-mount assembly. The 80 ohm ESR at 14.7456 MHz provides adequate oscillation margin for typical Pierce oscillator circuits in microcontrollers and audio codecs. Typical applications include audio interface clocking (14.7456 MHz is a convenient audio clock multiple), USB-audio and DSP systems, set-top boxes, OA equipment, and general-purpose MCU reference clocks where miniaturization matters. When designing the layout, keep load capacitors close to the crystal pads and match the total load capacitance to the specified 8 pF; excessive stray capacitance pulls the frequency lower than tolerance. This page synthesizes distributor pricing, availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
NX3225GA-20MHZ-STD-CRA-1 - 20MHz AEC-Q200 Crystal | NDK
The NDK NX3225GA-20MHZ-STD-CRA-1 is an AEC-Q200 qualified 20 MHz surface-mount quartz crystal unit in a compact 3.2 x 2.5 x 0.75 mm SMD3225-4P package, specified with 8 pF load capacitance, 100 ohms maximum ESR, -40C to +150C operating temperature range, and +/-50 ppm frequency tolerance per the STD-CRA-1 specification. A crystal unit is a passive frequency-control component that uses the mechanical resonance of a vibrating quartz blank to generate a highly stable reference frequency. Within the signal-chain hierarchy, it sits at the foundation of clock generation: the crystal feeds the oscillator circuit inside a MCU, SoC, CAN transceiver, or RF IC, which amplifies and shapes the oscillation into a logic clock. Compared with a MEMS or crystal oscillator (XO), a bare crystal offers the lowest cost and smallest BOM footprint but requires the host IC to provide the inverter, load capacitors, and biasing network. Key features of the NX3225GA series include automotive-grade qualification (AEC-Q200), an extended -40C to +150C operating range that exceeds standard -40C to +85C industrial crystals, excellent heat, vibration and shock resistance, and stable start-up characteristics even under extremely severe environmental conditions, according to the NDK NX3225GA datasheet. Technically, the part uses an AT-cut quartz resonator mounted in a ceramic surface-mount package with four pads (two functional terminals plus two ground pads for mechanical stability and symmetry). The 8 pF load capacitance requires two appropriate load capacitors (typically 12-18 pF, calculated from CL = (C1 x C2)/(C1 + C2) + Cstray) for accurate 20 MHz output. The 100 ohms ESR rating ensures reliable start-up with most common MCU oscillator circuits. Typical applications include automotive body control modules, engine bay ECUs exposed to high ambient temperatures, industrial motor controllers, and CAN/LIN network nodes where a 20 MHz reference must survive -40C to +150C environments. Design consideration: verify the negative resistance margin of your oscillator loop (recommended -5x ESR or better) at the temperature extremes; the 100 ohms ESR spec is at the STD-CRA-1 drive level. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
NX3225GA-20MHZ-STD-CRG-2 - 20MHz 3225 SMD Crystal | NDK
The NDK NX3225GA-20MHZ-STD-CRG-2 (also ordered as NX3225GA-20.000M-STD-CRG-2) is a 20 MHz quartz crystal unit with an 8 pF load capacitance and +/-30 ppm frequency tolerance over -40C to +85C, supplied in an ultra-compact surface-mount SMD3225-4P package measuring just 3.2 x 2.5 x 0.75 mm. A quartz crystal unit is a passive frequency-control component that uses the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. Within the system hierarchy, it sits at the base of every clock chain: the crystal feeds the oscillator circuit inside a microcontroller, SoC, or real-time clock, which in turn clocks the digital system. Crystals are preferred over ceramic resonators and silicon oscillators where frequency accuracy and low phase jitter matter, because the quartz resonator's Q is orders of magnitude higher. Key features of the NX3225GA series include its compact and thin 3.2 x 2.5 x 0.75 mm typ. footprint suited to size-constrained boards, excellent environmental characteristics including heat and shock resistance, and excellent electrical performance for OA (office automation) and AV (audiovisual) applications, according to the NDK NX3225GA datasheet. The STD-CRG-2 specification number covers the standard 9.8 to 50 MHz frequency range with -40C to +85C operation. Technically, the NX3225GA is an AT-cut fundamental-mode crystal. The 8 pF rated load capacitance means the oscillator circuit must present approximately 8 pF of effective load (including PCB parasitics) for the crystal to oscillate exactly at 20 MHz; typical designs use two shunt capacitors calculated from the load capacitance equation. Note that the frequency tolerance of +/-30 ppm applies across the operating temperature range for this specification number. Typical applications include microcontroller clock references for industrial and office-automation equipment, audio/video SoC reference clocks, USB and network-adjacent MCU systems, and IoT node boards where the 3225 footprint is standard. Design consideration: always verify the negative resistance margin of the oscillator loop (at least 5x the crystal ESR) and keep crystal traces short and guarded by ground to avoid stray capacitance shifts. This page synthesizes distributor pricing, same-footprint alternatives, and practical design notes not found in the manufacturer datasheet.
NX3225GA-24.000MHZ - 24MHz SMD Crystal 3225 | NDK
The NDK (Nihon Dempa Kogyo) NX3225GA-24.000MHZ is a 24 MHz fundamental-mode quartz crystal unit in an ultra-compact 3.2 x 2.5 x 0.75 mm surface-mount ceramic package (3225 footprint, 4-pad SMD, no lead). It is a passive resonator that requires an external oscillator inverter or MCU on-chip oscillator circuit to generate the clock. A quartz crystal unit is an electromechanical resonator cut from synthetic quartz that exhibits extremely stable piezoelectric resonance. In the system hierarchy, it sits at the base of frequency-control devices: crystal unit -> crystal oscillator (XO) -> clock generator -> timing IC. Crystals define carrier frequencies, baud rates, and MCU clocks in virtually every digital product, where frequency stability directly affects communication accuracy and timing margin. Key features of the NX3225GA series include its ultra-compact and thin profile (0.75 mm typical height), excellent environmental characteristics including heat and shock resistance, and excellent electrical performance for OA (office automation) and AV (audio visual) equipment. For the 20 MHz to 50 MHz range, NDK specifies a maximum equivalent series resistance (ESR) of 50 ohms under the STD-CRG-2 standard spec, which ensures reliable oscillation start-up with typical MCU Pierce oscillator circuits. The 24 MHz frequency is a popular choice for USB full-speed and other embedded systems, since 24 MHz divides evenly to the 12 MHz and 48 MHz clocks required by many USB and microcontroller peripherals. The crystal is driven in parallel (anti-resonant) mode with two external loading capacitors. Typical applications include microcontroller clock sources, USB interfaces, set-top boxes, monitors, LCD TVs, network interface cards, and small consumer OA/AV equipment where board height is constrained. Design consideration: because a crystal unit is a passive component, NDK explicitly recommends verifying circuit conditions - negative resistance margin, load capacitance, and drive level - on the actual PCB before mass production. This page synthesizes distributor pricing, same-family drop-in frequency variants, and practical design notes not found in the manufacturer datasheet alone.
NX3225GA-25.000M-STD-CRG-2 - 25MHz 8pF SMD Crystal | NDK
The NDK NX3225GA-25.000M-STD-CRG-2 is a 25 MHz quartz crystal unit with +/-20 ppm frequency tolerance, +/-30 ppm frequency stability over -40C to +85C, 8 pF load capacitance and 50 ohm maximum ESR, housed in a compact 3.2 x 2.5 x 0.75 mm 4-pad surface-mount package. A crystal unit is a passive frequency-control component that uses the mechanical resonance of a quartz blank to generate a highly stable reference frequency. Within the timing-signal hierarchy, the crystal sits at the base of every clock chain: crystal unit -> Pierce oscillator circuit -> MCU/PLL system clock -> full digital system. Unlike crystal oscillators (XO/TCXO), a bare crystal requires the oscillator circuit integrated in the host MCU or chipset to operate. Key features of the NX3225GA series include an ultra-compact and thin 0.75 mm profile suited to dense layouts, excellent heat and shock resistance for harsh environments, and fundamental-mode operation at 25 MHz. The 8 pF load capacitance allows small, inexpensive loading capacitors, and the 50 ohm ESR supports reliable oscillation start-up with most MCU on-chip inverters. The device uses an AT-cut fundamental-mode quartz resonator with a hermetically sealed ceramic SMD package. NDK manufactures and supplies these crystals with advanced technology and thorough quality control, and this suffix (-CRG-2) is specified for automotive-relevant applications per the series ordering code. Typical applications include microcontroller clock references for automotive body and powertrain ECUs, CAN/LIN network nodes, industrial control boards, and AV/office-automation equipment where a 25 MHz reference feeds USB, Ethernet PHYs, or PLL synthesizers. When designing the Pierce circuit, match the external loading capacitors so that their series combination equals 8 pF (typically two 15 pF capacitors minus stray capacitance), and verify negative resistance margin of at least 5x ESR for reliable start-up. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
NX3225GA-25MHZ-STD-CRG-2 - 25MHz 8pF SMD Crystal | NDK
The NDK NX3225GA-25MHZ-STD-CRG-2 is a 25 MHz surface-mount quartz crystal unit with a frequency tolerance of plus or minus 20 ppm, a load capacitance of 8 pF, and a maximum equivalent series resistance (ESR) of 50 ohms, housed in a compact 3.2 x 2.5 x 0.75 mm 4-pad SMD-3225 no-lead package. A quartz crystal unit is a passive frequency-control component that exploits the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. Within the timing-signal hierarchy, the crystal sits below the crystal oscillator (XO) and the oscillator IC: it requires an external oscillator circuit (typically built into a microcontroller or PLL) to oscillate, but offers the lowest cost and lowest power path to a precision clock. Crystals are foundational elements of every digital system's clock tree. Key features of the NX3225GA include its ultra-compact and thin 3.2 x 2.5 x 0.75 mm outline, excellent heat and shock resistance, and stable start-up characteristics across an operating temperature range of -40 C to +85 C. The nominal frequency range of the STD-CRG-2 specification spans 9.8 MHz to 50 MHz, with the 20-50 MHz range specified at 50 ohms maximum ESR. Pins 2 and 4 are not connected and may be tied to ground for improved stability. Technically, the NX3225GA uses an AT-cut quartz resonator optimized for fundamental-mode operation in the HF band. NDK manufactures the series with proprietary processing that yields uniform quality and high reliability, as reflected in the -40 C to +85 C industrial-grade temperature rating and vibration/shock resistance noted in the manufacturer datasheet. Typical applications include office automation (OA) equipment such as printers and scanners, audiovisual (AV) equipment, microcontroller clock references in consumer electronics, USB and Ethernet physical-layer timing, and control boards in industrial equipment where a compact, low-cost 25 MHz reference is required. Design consideration: match the crystal's 8 pF rated load capacitance by selecting external load capacitors CL of roughly (CL - Cstray x 2) per leg, and verify negative resistance margin of at least 5x ESR in the oscillator loop to guarantee start-up across temperature. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in a single manufacturer datasheet, providing consolidated information-gain for engineers evaluating 25 MHz SMD crystals.
NX3225GA-32.4576MHZ - 32.4576MHz SMD Crystal | NDK
The NDK NX3225GA-32.4576MHZ is a 32.4576 MHz quartz crystal unit in a compact surface-mount 3225 package measuring 3.2 x 2.5 x 0.75 mm (typical), with a standard frequency tolerance of plus/minus 20 x 10-6 and frequency-temperature characteristics of plus/minus 20 x 10-6 over 0 to +70 C. A quartz crystal unit is a passive frequency-control component that uses the mechanical resonance of a vibrating quartz die to generate a highly stable reference frequency. Within the timing-component hierarchy - crystal unit -> resonator -> frequency control device -> passive component - crystals form the heart of oscillator circuits, setting the clock for microcontrollers, transceivers, and audio/video systems where a stable reference directly determines system timing accuracy. Key features of the NX3225GA include its ultra-compact and thin 3.2 x 2.5 x 0.75 mm outline, excellent heat and shock resistance, and electrical performance optimized for OA (office automation) and AV (audiovisual) applications. According to the NDK NX3225GA datasheet (document NDKX03-00006), equivalent series resistance depends on the frequency band: 200 ohms max for 9.8 MHz to below 12 MHz, 100 ohms max for 12 to below 13 MHz, 80 ohms max for 13 to below 20 MHz, and 50 ohms max for 20 to 50 MHz, confirming that the 32.4576 MHz part operates in the low-ESR fundamental region. Technically, the NX3225GA is an AT-cut fundamental-mode crystal tuned for parallel resonance, supplied with a standard load-capacitance ordering code (STD-CRG family). Its tight plus/minus 20 ppm calibration plus plus/minus 20 ppm temperature drift yields roughly plus/minus 40 ppm total stability over the commercial temperature range, sufficient for USB, audio master clocks, and general-purpose MCU clocking. Typical applications include 32.4576 MHz audio and video master clocks (a frequency that divides cleanly to standard audio sample rates), office-automation equipment, consumer AV gear, and embedded MCU clock sources requiring miniaturization. Design consideration: place the crystal close to the oscillator pins with short traces and follow the MCU load-capacitance recommendation to pull the frequency into tolerance. This page adds distributor pricing, drop-in NX3225GA-family alternatives, design notes, and an FAQ not found in the manufacturer datasheet alone.
NX3225GA-42.000MHZ - 42MHz SMD Crystal 3225 | NDK
The NDK NX3225GA-42.000MHZ is a 42.000 MHz fundamental-mode quartz crystal unit in an ultra-compact 3.2 x 2.5 x 0.75 mm surface-mount ceramic package, drawn from NDK's NX3225GA series covering nominal frequencies from 9.8 MHz to 50 MHz. A quartz crystal unit is a passive frequency-control component that exploits the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. Within the system hierarchy, crystal units sit at the base of the clock and timing chain, feeding oscillator circuits in MCUs, RF transceivers, and SoCs, which in turn drive PLLs and clock trees. Unlike integrated oscillators, a crystal unit requires external circuit conditions (load capacitance, negative resistance margin) defined by the host IC. Key features of the NX3225GA include its ultra-compact and thin 3.2 x 2.5 x 0.75 mm typ. package, excellent environmental characteristics including heat and shock resistance, and stable start-up characteristics even under severe environmental conditions. For the 42 MHz frequency point, the standard specification gives a maximum equivalent series resistance of 50 ohms, per the NDK standard specification table for the 20 to 50 MHz band. The NX3225GA uses an AT-cut fundamental-mode quartz resonator sealed in a ceramic SMD package with metal lid. NDK manufactures these crystals with advanced photolithographic tuning and thorough quality control, achieving uniform high quality in mass production. The OA/AV (office automation / audiovisual) grade datasheet highlights strong electrical performance for digital clocking, while a separate automotive-grade variant datasheet documents heat, vibration, and shock resistance for in-vehicle use. Typical applications include 42 MHz clocking for USB, Ethernet PHY, and wireless SoC reference circuits, office automation equipment, and audiovisual products where a compact, low-profile clock source is required. Design consideration: always verify oscillation margin with the host IC - NDK explicitly recommends checking circuit conditions, load capacitance, and negative resistance before using the crystal, and re-checking when reusing a crystal on a different board. This page synthesizes verified distributor data, drop-in alternatives, and practical design notes beyond the raw NDK datasheet, with pricing and stock references as of 2026-09-14.