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Product Detailed Parameters
- Description：CRYSTAL 20.0000MHZ 8PF SMD
- Series：NX3225GB
- Mfr：NDK (NIHON DEMPA KOGYO CO., LTD)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MHz Crystal
- Frequency：20 MHz
- Frequency Stability：±150ppm
- Frequency Tolerance：±50ppm
- Load Capacitance：8pF
- ESR (Equivalent Series Resistance)：100 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-40°C ~ 150°C
- Ratings：AEC-Q200
- Mounting Type：Surface Mount
- Package / Case：2-SMD, No Lead
- Supplier Device Package：-
- Size / Dimension：0.126" L x 0.098" W (3.20mm x 2.50mm)
- Height - Seated (Max)：0.035" (0.90mm)
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Overview
The STDCRA2-20M is a 20 MHz fundamental mode crystal resonator manufactured by NDK. It features an 8 pF load capacitance and a maximum equivalent series resistance of 100 Ohms. The component operates within a temperature range of -40°C to +85°C and exhibits a frequency stability of ±50 ppm with a tolerance of ±30 ppm. It utilizes a 2-SMD, no lead package with dimensions of 3.20mm x 2.50mm and a maximum height of 0.90mm.
Feature Summary
- Fundamental oscillation mode for precise timing applications
- Wide operating temperature range suitable for industrial environments
- Compact surface-mount design for automated assembly
Applications
- Industrial control systems requiring stable clock signals
- Automotive electronics operating in wide temperature ranges
- Communication equipment utilizing 20 MHz reference frequencies
Procurement Notes
Verify the specific datasheet version (e.g., STD-CRA-2) to confirm electrical parameters such as ESR and load capacitance. Ensure the ordering suffix matches the required packaging format. Cross-reference the manufacturer part number with distributor codes to avoid selection errors during procurement.
Selection Notes
Select this component when a 20 MHz fundamental resonance is required with moderate stability. The 100 Ohm ESR limit must be compatible with the oscillator circuit design. Verify that the 2-SMD footprint fits the PCB layout constraints compared to larger 4-terminal packages.
Part Context
This part belongs to the NX3225SA or similar series from NDK, focusing on standard SMD crystal resonators. NDK manufactures these devices using培育人工水晶 technology, ensuring high reliability for automotive and industrial sectors. The company maintains global production facilities including plants in China and Japan.
Replacement Considerations
Direct substitutes include other 20 MHz, 8pF, 2-SMD crystals from manufacturers like ECS or Abracon, provided they match the 100 Ohm ESR and ±50 ppm stability requirements. Verify mechanical dimensions and soldering profiles before substitution.
