SXTHM218FA384-40.000M

Crystals Overview

The SXTHM218FA384-40.000M is a surface-mount MHz crystal oscillator manufactured by Suntsu Electronics, Inc. It operates at a nominal frequency of 40 MHz with a frequency tolerance of ±10ppm and a frequency stability of ±50ppm. The component utilizes an HC-49/US package configuration adapted for surface mount applications. It features a load capacitance of 18pF and an equivalent series resistance (ESR) of 30 Ohms. The device is designed for operation within a temperature range of -30°C to +85°C. This active product belongs to the SXTHM2 series, providing precise timing solutions for electronic circuits requiring stable clock signals.

Crystals Feature Summary

• Surface-mount design compatible with automated assembly processes
• High frequency stability suitable for precision timing requirements
• Robust construction within extended industrial temperature ranges

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing systems

Crystals Procurement Notes

Verify the specific suffix and packaging details against official Suntsu Electronics documentation before procurement. Ensure compatibility with reflow soldering profiles specified in the datasheet. Confirm that the load capacitance matches the target circuit design requirements. Check for any recent revisions to the part number that may affect pinout or electrical characteristics. Validate supplier authenticity through authorized distribution channels.

Crystals Selection Notes

Select this component when a 40 MHz surface-mount crystal with ±10ppm tolerance is required. Consider the ±50ppm stability specification for environmental variations. Evaluate the 18pF load capacitance against the oscillator circuit design. Assess the -30°C to +85°C operating range against application thermal conditions. Compare ESR values with driver circuit capabilities to ensure reliable oscillation startup.

Crystals Part Context

This part belongs to the SXTHM2 series of surface-mount crystals from Suntsu Electronics. The series offers various frequency options and package configurations. The FA384 designation indicates specific physical dimensions and terminal arrangements. Similar parts in the series include variants with different frequencies such as 24.576 MHz. The series supports both standard and high-stability applications.

Crystals Replacement Considerations

Direct substitutes must match the 40 MHz frequency, 18pF load capacitance, and surface-mount form factor. Verify equivalent ESR and stability specifications for circuit compatibility. Cross-reference mechanical dimensions to ensure board space compliance. Consult manufacturer cross-reference guides for approved alternative part numbers.