STDCQR1-25M

Overview

The STDCQR1-25M is a 25 MHz fundamental mode quartz crystal resonator manufactured by NDK. It features an 8 pF load capacitance and a maximum equivalent series resistance of 50 Ohms. The component operates within a temperature range of -40°C to +85°C and exhibits a frequency tolerance of ±15 ppm with a stability of ±30 ppm. It utilizes a 4-SMD, no lead package measuring 3.20mm x 2.50mm x 0.60mm maximum height.

Feature Summary

• Fundamental oscillation mode for stable frequency generation
• Wide industrial operating temperature range capability
• Compact surface-mount design for automated assembly

Applications

• Industrial control systems requiring precise timing
• Automotive electronics operating in wide temperature environments
• Communication equipment utilizing standard clock frequencies

Procurement Notes

Verify the specific suffix codes against the official NDK datasheet to ensure the exact electrical parameters match the design requirements. Confirm that the load capacitance and ESR values align with the oscillator circuit specifications before finalizing procurement orders.

Selection Notes

Select this component when a 25 MHz reference is required for applications demanding high reliability across varying thermal conditions. Ensure the PCB layout supports the 4-SMD footprint dimensions and accounts for the specified mechanical height constraints during assembly planning.

Part Context

This part belongs to the NX3225SA series, representing NDK's standard small-sized crystal lineup. The manufacturer specializes in quartz devices for automotive and industrial sectors, emphasizing high stability and robust performance under environmental stress compared to general consumer-grade alternatives.

Replacement Considerations

ECS-250-8-33B-CKY-TR from ECS Inc. is listed as a direct substitute. Verify compatibility regarding load capacitance and physical dimensions before implementation.