STDCRS1-18.08M

Overview

The STDCRS1-18.08M is a surface-mount MHz crystal manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a fundamental frequency of 18.08 MHz with a load capacitance of 8 pF and an equivalent series resistance (ESR) of 120 Ohms. The component provides a frequency tolerance of ±15 ppm and a stability of ±50 ppm. It utilizes a 4-SMD, no-lead package measuring 3.20mm x 2.50mm with a maximum height of 0.60mm. Designed for base harmonic operation, it supports a wide operating temperature range from -40°C to 125°C and meets AEC-Q200 automotive standards.

Feature Summary

• Compliant with AEC-Q200 automotive qualification standards for reliability
• Operates within an extended industrial temperature range of -40°C to 125°C
• Utilizes a compact 4-SMD no-lead surface mount package design

Applications

• Automotive electronic systems requiring AEC-Q200 certified components
• Industrial control circuits demanding wide temperature stability
• Consumer electronics utilizing 18.08 MHz clock signals

Procurement Notes

Verify the specific frequency tolerance and stability requirements against the application's timing constraints before ordering. Confirm that the 120 Ohm ESR value is compatible with the oscillator circuit design to ensure proper startup and oscillation. Ensure the PCB footprint matches the 3.20mm x 2.50mm 4-SMD dimensions. Check for RoHS3 compliance if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when an automotive-grade crystal is required for environments exceeding standard commercial temperature limits. The 18.08 MHz frequency is suitable for specific communication or sampling applications. Consider the 120 Ohm ESR when designing the load capacitors to match the 8 pF specification. The wide temperature range makes it appropriate for harsh industrial or under-hood automotive locations where standard crystals might fail.

Part Context

This part belongs to the NX3225SA series of surface-mount crystals produced by NDK. The series is known for high frequency stability and small form factors. The STDCRS1-18.08M specifically targets automotive and industrial markets due to its AEC-Q200 certification and extended temperature rating, distinguishing it from standard commercial variants in the same physical package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.