SXT32421AA38-40.000M

Crystals Overview

The SXT32421AA38-40.000M is a surface-mount crystal oscillator manufactured by Suntsu Electronics, Inc. It operates at a fundamental frequency of 40.000 MHz with a frequency tolerance of ±50 ppm. The component features a load capacitance of 21 pF and an equivalent series resistance (ESR) of 40 Ohms. It is housed in a compact 4-SMD, No Lead package, designed for integration into space-constrained electronic circuits requiring precise timing references.

Crystals Feature Summary

• Provides stable oscillation at 40 MHz with ±50 ppm tolerance
• Utilizes a 4-SMD no-lead surface mount package for automated assembly
• Designed for low power consumption in portable applications

Crystals Applications

• Clock generation for microcontrollers and digital signal processors
• Timing reference for communication interfaces such as UART and SPI
• Frequency control in consumer electronics and IoT devices

Crystals Procurement Notes

Verify the specific ESR value of 40 Ohms against circuit requirements, as other variants in this series may exhibit different impedance characteristics. Confirm that the 21 pF load capacitance aligns with the host oscillator circuit design to ensure accurate frequency performance. Ensure compliance with RoHS standards if required by the end product specifications.

Crystals Selection Notes

Select this component when a 40 MHz frequency with ±50 ppm stability is required in a small form factor. Consider the 40 Ohm ESR to match the driving capability of the connected IC. Compare with other frequencies in the SXT32421AA38 series if alternative timing speeds are needed while maintaining the same physical footprint and electrical profile.

Crystals Part Context

This part belongs to the SXT32421AA38 series of ceramic SMD crystals from Suntsu Electronics. The series offers various standard frequencies including 37.4 MHz and 26 MHz, all sharing similar package dimensions and electrical parameters like 21 pF load capacitance. These components are designed for high reliability in commercial and industrial temperature ranges.

Crystals Replacement Considerations

Direct substitutes include other 40 MHz crystals from Suntsu with identical 4-SMD packaging and 21 pF load capacitance, such as the SXT32421AA48-40.000M if pin compatibility differs. Verify ESR matching to prevent overdriving or startup failures in the target application.