NX3225GA-12MHZ-STD-CRG-1 - 12MHz 8pF SMD3225 Crystal | NDK
MPN: NX3225GA-12MHZ-STD-CRG-1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.5579 | $0.56 |
| 10 | $0.42 | $4.20 |
| 100 | $0.31 | $31.00 |
| 500 | $0.25 | $125.00 |
| 1,000 | $0.2007 | $200.70 |
Drop-in alternatives for NX3225GA-12MHZ-STD-CRG-1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
NX3225GA-12.000MHZ
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View Datasheet →NX3225GA-12MHZ-STD-CRG-2
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NX3225GA-20MHZ-STD-CRG-2
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View Datasheet →NX3225GA-20MHZ-STD-CRA-1
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View Datasheet →NX3225GA-13.56M-STD-CRG-2
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View Datasheet →NX3225GA-14.7456M
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View Datasheet →NX3225GA-24.000MHZ
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View Datasheet →NX3225GB-16M-STD-CRA-2
✅ Drop-In📋 Reference alternative (not in catalog)
NX3225GA-12MHZ-STD-CRG-1 Maximum Ratings & Electrical Characteristics
| Nominal Frequency | 12 MHz |
| Frequency Tolerance | ±20 ppm at 25 C |
| Load Capacitance | 8 pF |
| Equivalent Series Resistance (ESR) | 100 ohm max |
| Aging / Frequency Stability Class | ±30 ppm |
| Operating Temperature Range | -10 C to +70 C |
| Storage Temperature Range | -40 C to +125 C |
| Drive Level | 100 uW typ. |
| Package Size | 3.2 x 2.5 x 0.75 mm typ. (SMD3225-4P) |
| Mounting Type | Surface Mount |
| Number of Pads | 4 |
| Terminal Finish | Tungsten metallization, Au plating over Ni pre-plating |
| RoHS Status | Compliant |
| Reflow Soldering | Suitable (per manufacturer profile) |
| Application Segment | OA (office automation) / AV (audiovisual) equipment |
| Vibration Mode | Fundamental mode |
NX3225GA-12MHZ-STD-CRG-1 Pin Configuration
| Pin 1 | X1 (XTAL1) — Crystal resonator terminal 1 - connect to oscillator inverting input |
| Pin 2 | GND — Ground pad (mechanical support and shielding) |
| Pin 3 | X2 (XTAL2) — Crystal resonator terminal 2 - connect to oscillator output / load capacitor |
| Pin 4 | GND — Ground pad (mechanical support and shielding) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
NX3225GA-12MHZ-STD-CRG-1 is suitable for 6 applications: Microcontroller Clock Reference, USB Full-Speed Device Timing, Office Automation (OA) Equipment, Audiovisual (AV) Equipment, Consumer IoT and Smart Home Nodes, Industrial Embedded Control.
Microcontroller Clock Reference
The NX3225GA-12MHZ-STD-CRG-1 serves as the primary external clock reference for general-purpose MCUs (ARM Cortex-M, 8051, RISC-V cores) whose PLLs multiply the 12 MHz input to core frequencies. The 12 MHz fundamental frequency divides cleanly into common UART baud rates and USB full-speed timing (12 MHz x 4 = 48 MHz), while the ±20 ppm tolerance keeps timing error well inside UART frame budgets. The 100 ohm max ESR ensures reliable start-up across typical MCU Pierce oscillator amplifiers at 8 pF load. Place the crystal within a few millimeters of the OSC pins with short symmetrical traces and ground guarding to limit stray capacitance drift.
Recommended
USB Full-Speed Device Timing
For USB full-speed peripherals, the NX3225GA-12MHZ-STD-CRG-1 provides the standard 12 MHz reference that internal PLLs quadruple to the 48 MHz USB clock. The ±20 ppm frequency tolerance supports the USB 2.0 full-speed data-rate budget when combined with correct 8 pF load-capacitor matching, and the compact 3.2 x 2.5 x 0.75 mm package suits dongles and small peripheral PCBs. Use the manufacturer reflow profile for assembly and keep the crystal ground pads solidly tied to the ground plane to reduce jitter. Firmware-driven USB enumeration tests should verify frequency error after mass-production loading since PCB strays shift the effective load.
Recommended
Office Automation (OA) Equipment
NDK specifically positions the NX3225GA series for office automation equipment - printers, scanners, copiers, and point-of-sale terminals - where many clock sources occupy one board and miniaturization matters. The 3225 footprint reduces clock-section area versus larger HC-49 or 5032 crystals, and the series' excellent heat and shock resistance withstands the thermal cycling of fuser-adjacent electronics. The 12 MHz variant supports main MCU clocks and communication interfaces (USB, UART, SPI). Its RoHS compliance and reflow compatibility fit high-volume automated assembly lines typical of OA manufacturing, and the ±20 ppm tolerance covers peripheral timing requirements without temperature-compensated alternatives.
Recommended
Audiovisual (AV) Equipment
For AV equipment such as set-top boxes, audio interfaces, and digital displays, the NX3225GA-12MHZ-STD-CRG-1 provides a stable 12 MHz reference for control MCUs and communication front-ends, while media SoCs derive audio/video clocks through fractional-N PLLs. The series is explicitly rated by NDK for AV applications, with electrical performance (100 ohm max ESR, ±20 ppm) sufficient for low-jitter system clocks. The thin 0.75 mm profile fits slim AV enclosures and HDMI dongle form factors. Good layout practice - short crystal traces, local ground pour, and neighboring switching regulators spaced away - preserves spectral purity of the derived audio and video clocks.
Recommended
Consumer IoT and Smart Home Nodes
Battery-powered IoT nodes benefit from the NX3225GA-12MHZ-STD-CRG-1's low drive-level operation (100 uW typ.) and small 3225 footprint, fitting coin-cell-sized sensor boards. The 12 MHz reference drives RF module MCUs (ESP32-class, Zigbee, sub-GHz SoCs) whose radios tolerate ±20 ppm. The hermetic ceramic package and heat/shock resistance maintain frequency accuracy across household temperature swings within the -10 C to +70 C operating window. Designers should keep the crystal away from antenna feed lines to avoid load pulling, and confirm that the MCU sleep-mode oscillator can start the 100 ohm ESR crystal reliably after wake-up for duty-cycled operation.
Recommended
Industrial Embedded Control
In industrial controllers, PLC I/O modules, and motor-control boards, the NX3225GA-12MHZ-STD-CRG-1 clocks the main MCU and communication peripherals (CAN, RS-485 via UART). While the STD grade is rated -10 C to +70 C, many factory-floor enclosures stay within this range with adequate thermal design; for colder cabinets, NDK extended-temperature variants should be evaluated. The 12 MHz base frequency divides precisely into standard CAN bit timing when fed through the MCU's CAN clock tree. Shock resistance and the robust gold-over-nickel terminal finish withstand vibration and conformal-coating processes common in industrial assembly, and the SMD3225 pad pattern supports automated optical inspection.
Recommended
Recommended Products Summary
Engineering reference data for NX3225GA-12MHZ-STD-CRG-1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NX3225GA-12.000MHZ | NX3225GA-12MHZ-STD-CRG-2 | NX3225GA-20MHZ-STD-CRG-2 | NX3225GB-16M-STD-CRA-2 |
|---|---|---|---|---|---|
| Package | SMD3225-4P (3.2 x 2.5 x 0.75 mm) | SMD3225-4P - same | SMD3225-4P - same | SMD3225-4P - same | SMD3225 family - same |
| Brand | NDK (Nihon Dempa Kogyo) | NDK | NDK | NDK | NDK |
| Nominal Frequency | 12 MHz | 12 MHz | 12 MHz | 20 MHz | 16 MHz |
| Load Capacitance | 8 pF | 8 pF | 8 pF | 8 pF | [DATA_NEEDED] |
| Frequency Tolerance | ±20 ppm | ±20 ppm | ±20 ppm | ±20 ppm | [DATA_NEEDED] |
| Max ESR | 100 ohm | 100 ohm | 100 ohm | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature | -10 C to +70 C | -10 C to +70 C (STD) | -10 C to +70 C (STD) | -10 C to +70 C (STD) | extended grade family [DATA_NEEDED] |
| Drop-in for 12 MHz designs | Reference part | Yes - identical electricals | Yes - taping code only | No - different frequency | No - different frequency |
| Reference Unit Price (qty 1) | $0.5579 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Ultra-compact thin profile (vs Larger 5032/HC-49 crystals)
- Robust environmental resistance (vs NX3225GB (extended grade, when STD grade suffices))
- Packaging-code flexibility within same electricals (vs NX3225GA-12MHZ-STD-CRG-2)
Design Notes
Place the NX3225GA-12MHZ-STD-CRG-1 as close as possible to the MCU oscillator pins, keeping X1/X2 traces shorter than 10 mm, symmetrical, and routed away from high-dv/dt signals (switching regulator nodes, clock outputs). Solid-tie both GND pads (pins 2 and 4) to the ground plane with multiple vias. Follow the land-pattern drawing in the NDK NX3225GA datasheet (NDKX03-00006_en) for pad dimensions to ensure self-alignment during reflow.
The most common failure mode is frequency offset from incorrect load capacitance. The crystal is specified at 8 pF: with approximately 3 pF PCB stray capacitance, use two 10 pF NP0/C0G capacitors so that (10x10)/(10+10)+3 = 8 pF. Do not use X7R/X5R dielectrics - their capacitance drifts with voltage and temperature, pulling frequency by tens of ppm. Also verify the MCU oscillator drive level does not exceed the 100 uW typical rating; excess drive ages the crystal and shifts frequency.
Oscillator start-up margin depends on the loop transconductance versus the crystal ESR. At the 100 ohm maximum ESR rating, verify your MCU's oscillator gain margin per the MCU manufacturer's crystal selection note (most vendors publish a negative-resistance calculation: |Rneg| should exceed 3-5x the 100 ohm ESR). Low-power sleep oscillators may fail to start a 100 ohm ESR crystal - test start-up across the full -10 C to +70 C temperature range and at minimum supply voltage before mass production.
Compliance Information
RoHS compliant per LCSC listing (SMD3225-4P Crystals ROHS). Reflow soldering supported per NDK official product page. Terminal finish Au over Ni pre-plating compatible with lead-free assembly.
