NX3225GA-12.000MHZ - 12MHz 8pF SMD Crystal | NDK
MPN: NX3225GA-12.000MHZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.27 | $0.27 |
| 10 | $0.24 | $2.40 |
| 100 | $0.2 | $20.00 |
| 500 | $0.16 | $80.00 |
| 1,000 | $0.13 | $130.00 |
Drop-in alternatives for NX3225GA-12.000MHZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
NX3225GA-12.000M-STD-CRG-2
β Drop-Inπ Reference alternative (not in catalog)
NX3225GA-12.000M-STD-CRG-1
β Drop-Inπ Reference alternative (not in catalog)
NX3225GA-12.000M-STD-CRA-1
β Drop-Inπ Reference alternative (not in catalog)
NX3225GA-12.000MHz-EXS00A-CG06572
β Drop-Inπ Reference alternative (not in catalog)
NX3225GA-12MHZ-STD-CRG-2
β Drop-Inπ Reference alternative (not in catalog)
NX3225GA-12.000MHZ Maximum Ratings & Electrical Characteristics
| Nominal Frequency | 12 MHz |
| Frequency Tolerance | +/-30 ppm |
| Load Capacitance (CL) | 8 pF |
| Operating Temperature | -40C to +85C |
| Equivalent Series Resistance (ESR) Max | 100 ohm (STD-CRG-2, 12 <= f < 13 MHz) |
| Frequency Range of Series | 9.8 MHz to 50 MHz |
| Package Size | 3.2 x 2.5 x 0.75 mm (typ.) |
| Package | SMD-3225, 4-pad |
| Mounting Type | Surface Mount |
| Resonator Type | AT-cut quartz crystal unit |
| Height (max, typ.) | 0.75 mm |
| Features | Ultra compact and thin; heat and shock resistance; stable start-up |
| RoHS Status | RoHS compliant |
NX3225GA-12.000MHZ Pin Configuration
| Pin 1 | X1 (XTAL1) β Crystal terminal 1 - connect to oscillator input/inverter input |
| Pin 2 | GND β Mounting/ground pad |
| Pin 3 | X2 (XTAL2) β Crystal terminal 2 - connect to oscillator output/inverter output |
| Pin 4 | GND β Mounting/ground pad |
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-12.000MHZ is suitable for 6 applications: Microcontroller Clock Reference, USB and Wired Interface Clocking, Industrial Control and Automation Boards, IoT and Wearable Devices, Wireless Modules and RF SoC Boards, Automotive Body and Comfort Electronics.
Microcontroller Clock Reference
The NX3225GA-12.000MHZ is a natural external crystal for MCU OSC_IN/OSC_OUT circuits, a role confirmed by its appearance in TI TM4C123 series reference material under the same 12 MHz ordering code. Its 8 pF load capacitance matches typical on-chip Pierce oscillator designs, and the 100 ohm maximum ESR at 12 MHz (STD-CRG-2) provides comfortable negative-resistance margin against the few-hundred-ohm to k-ohm range of typical MCU oscillators. The 0.75 mm profile lets the crystal sit within a few millimeters of the MCU pins, shortening the loop and reducing stray capacitance. NDK highlights stable start-up characteristics, valuable for brown-out and low-temperature boot scenarios.
Recommended
USB and Wired Interface Clocking
A 12 MHz reference is the classic seed clock for USB full-speed and many wired interface PHYs, where internal PLLs multiply it to 48 MHz or higher. The NX3225GA's +/-30 ppm tolerance over -40C to +85C keeps the multiplied clock within data-eye budgets, and the low 0.75 mm profile suits dongles, hubs, and compact bridge boards. Because the crystal is passive, placing it with short, guarded traces and loading capacitors matched to 8 pF CL minimizes jitter contribution; NDK's datasheet explicitly instructs verifying circuit margin and confirming the output frequency on the actual board before production.
Recommended
Industrial Control and Automation Boards
In factory automation and PLC-style controllers, clock sources must survive vibration, thermal cycling, and shock. The NX3225GA series provides excellent environment-resistant performance including heat and shock resistance per NDK product documentation, and for the most severe conditions the STD-CRA automotive grade of the same package is available. The -40C to +85C range and 100 ohm ESR ceiling at 12 MHz ensure oscillator start-up on cold cabinets and margin for MCU loops driving long trace stubs. The metal-lid ceramic SMD package also reflows reliably in standard lead-free profiles, supporting high-volume industrial assembly.
Recommended
IoT and Wearable Devices
Wearables and battery-powered IoT nodes benefit directly from the NX3225GA's ultra-compact 3.2 x 2.5 x 0.75 mm footprint, one of the thinnest in its class, enabling placement under shields or beside coin cells. A 12 MHz crystal seeds the MCU and radio PLLs for BLE/802.15.4 stacks; the +/-30 ppm grade is generally adequate because protocol timing correction is handled in the stack. Designers should size load capacitors for the 8 pF CL and confirm drive level to keep quartz power within spec, preserving long-term frequency accuracy and low aging in always-on applications such as sensor beacons and smart tags.
Recommended
Wireless Modules and RF SoC Boards
Many RF SoCs and Wi-Fi/BT modules specify a 12 MHz, 8 pF external crystal feeding the on-chip synthesizer. The NX3225GA's tight ESR control (100 ohm max at 12 MHz under STD-CRG-2) supports reliable oscillation start-up with RF SoCs whose transconductance budgets are modest. NDK's mass-production quality discipline yields consistent motional parameters lot to lot, important because RF PLL lock range and phase noise depend on crystal Q and load accuracy. Layout-wise, keep the crystal loop away from antenna feeds and switching regulators; NDK recommends checking circuit conditions whenever reusing a crystal design on a new board.
Recommended
Automotive Body and Comfort Electronics
For automotive subsystems such as body control modules, tire-pressure sensors, and comfort ECUs, NDK offers the NX3225GA in the STD-CRA automotive specification with the same 3.2 x 2.5 x 0.75 mm footprint. NDK documentation cites stable start-up under extremely severe environmental conditions and resistance to heat, vibration, and shock - the dominant failure drivers for crystals near engines, doors, and wheels. The 12 MHz value serves as the master clock for MCU and LIN/CAN transceiver timing via PLL multiplication. Using the identical footprint across consumer and automotive builds lets one PCB design serve multiple vehicle programs.
Recommended
Recommended Products Summary
Engineering reference data for NX3225GA-12.000MHZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NX3225GA-12.000M-STD-CRG-2 | NX3225GA-12.000M-STD-CRG-1 | NX3225GA-12.000M-STD-CRA-1 |
|---|---|---|---|---|
| Package | SMD-3225 (3.2 x 2.5 x 0.75 mm), 4-pad | SMD-3225 - same | SMD-3225 - same | SMD-3225 - same |
| Brand | NDK (Nihon Dempa Kogyo) | NDK | NDK | NDK |
| Nominal Frequency | 12 MHz | 12 MHz | 12 MHz | 12 MHz |
| Load Capacitance | 8 pF | 8 pF | 8 pF | [DATA_NEEDED] |
| Frequency Tolerance | +/-30 ppm | +/-30 ppm | [DATA_NEEDED] | [DATA_NEEDED] |
| ESR Max at 12 MHz | 100 ohm (STD-CRG-2 table) | 100 ohm | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature | -40C to +85C | -40C to +85C | [DATA_NEEDED] | Automotive-grade range (see spec sheet) |
| Environment Rating | Industrial/consumer standard grade | Standard grade | Standard grade | Automotive: heat, vibration, shock resistant |
| Approx. Unit Price (qty 1) | $0.27 (as of 2026-09-14) | ~$0.13-0.27 (LCSC/Mouser) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Ultra-thin 0.75 mm profile (vs Larger 5032 / 49S 12 MHz crystals)
- Automotive-grade sibling on identical footprint (vs NX3225GA-12.000M-STD-CRA-1)
- Documented, frequency-banded ESR limits (vs Generic unbranded 3225 crystals)
Design Notes
Place the crystal within 3-5 mm of the MCU/SoC oscillator pins and keep the X1/X2 traces short, symmetrical, and guarded by ground. Route the loop away from switching regulators, antenna feeds, and high-speed clocks to avoid injection locking and phase-noise degradation. NDK's own guidance in NDKX03-00006 states that a crystal unit is a passive component and appropriate circuit conditions must be confirmed on the actual board - re-verify whenever the crystal is used on a new PCB.
Size load capacitors from the specified 8 pF CL: CL = (C1 x C2)/(C1 + C2) + Cstray. With roughly 2-3 pF of stray capacitance, 12-15 pF capacitors are a typical starting point; fine-tune the frequency on a sample build if ppm accuracy matters. Also verify negative-resistance margin per NDK's recommended method (target | -R | at least 5x the 100 ohm maximum ESR at 12 MHz) to guarantee start-up at -40C and at end-of-life ESR.
Do not drive the crystal beyond its specified drive level - excessive quartz power accelerates aging and can shift frequency beyond the +/-30 ppm tolerance; add a series resistor (typically 100 ohm to 1 kohm at 12 MHz) if drive level measurement exceeds the limit. Estimated: a 100 ohm series resistor with typical MCU oscillator impedance reduces crystal current proportionally, but the value should be confirmed by measurement. Finally, confirm the exact NDK spec code (STD-CRG vs CRA) on your PO - specifications differ by ordering suffix.
Compliance Information
RoHS compliance stated in LCSC listing for NX3225GA-12.000MHz-EXS00A-CG06572. AEC-Q100 not applicable (passive component); automotive variants follow NDK's automotive STD-CRA specification. REACH, halogen-free, and conflict-minerals status not stated in provided data.
