SXTHM218AA384-40.000M

Crystals Overview

The SXTHM218AA384-40.000M is a surface-mount crystal oscillator manufactured by Suntsu Electronics, Inc. It operates at a fundamental frequency of 40.000 MHz with a load capacitance of 18 pF and a frequency tolerance of ±50 ppm. The component utilizes an HC-49/US package form factor adapted for surface mount technology, measuring 11.7mm x 4.4mm. It features a series resistance of 30 Ohms and functions within an operating temperature range of -30°C to +85°C.

Crystals Feature Summary

• Surface mount design compatible with automated assembly processes
• Fundamental oscillation mode ensuring stable frequency generation
• Standardized physical dimensions facilitating PCB layout integration

Crystals Applications

• Clock signal generation for microcontrollers
• Timing references in communication modules
• Frequency control in consumer electronic devices

Crystals Procurement Notes

Verify the specific suffix codes against official Suntsu Electronics documentation to confirm exact electrical tolerances and packaging configurations. Ensure that the requested variant matches the required load capacitance and frequency stability specifications for the target application environment. Cross-reference manufacturer part numbers with distributor listings to avoid substitution errors during procurement.

Crystals Selection Notes

Select this component when a 40 MHz fundamental frequency with ±50 ppm tolerance is required for surface-mount applications. Consider the 18 pF load capacitance requirement for circuit matching. Evaluate the -30°C to +85°C operating range against environmental conditions. Confirm compatibility with HC-49/US footprint constraints on the printed circuit board design.

Crystals Part Context

This part belongs to the Suntsu Electronics crystal oscillator family, designed for precise timing applications. It represents a standard solution for integrating quartz-based frequency control into modern electronic systems. The model number indicates specific parameters including frequency, package type, and tolerance levels defined by the manufacturer's coding system.

Crystals Replacement Considerations

Direct substitutes include other 40 MHz SMD crystals with identical 18 pF load capacitance and similar physical dimensions. Verify pinout compatibility and mounting method before replacement. Check if alternative manufacturers offer components with equivalent frequency stability and temperature ranges.