SXT21420AA38-40.000M

Crystals Overview

The SXT21420AA38-40.000M 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 ±50ppm. The component features a load capacitance of 20pF and an equivalent series resistance (ESR) of 100 Ohms. It utilizes a 4-SMD, No Lead package configuration, specifically sized as SMD2016-4P. The device supports an operating temperature range from -30°C to +85°C and complies with RoHS standards for lead-free construction.

Crystals Feature Summary

• Surface-mount design utilizing a 4-SMD, No Lead package format
• Fundamental frequency operation at 40 MHz with specified load capacitance
• Compliant with lead-free manufacturing processes

Crystals Applications

• Clock signal generation in digital circuits
• Timing reference for microcontrollers
• Frequency control in communication modules

Crystals Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official documentation to confirm exact frequency tolerance and packaging details. Ensure compatibility with the target circuit's load capacitance requirements, which are specified as 20pF for this model. Confirm that the operating temperature range of -30°C to +85°C meets the environmental conditions of the intended application. Cross-reference the ESR value of 100 Ohms with the oscillator circuit design specifications.

Crystals Selection Notes

Select this component when a precise 40 MHz timing source is required for space-constrained designs due to its small SMD2016-4P footprint. Consider the ±50ppm frequency tolerance for applications requiring moderate stability. The 20pF load capacitance must match the external circuit design to ensure accurate oscillation frequency. Evaluate the 100 Ohm ESR against the drive level limitations of the host oscillator circuit to prevent over-driving the crystal.

Crystals Part Context

This part belongs to the SXT21420 series of surface-mount crystals from Suntsu Electronics, Inc. The series offers various frequencies within the same physical package dimensions. The AA38 designation typically indicates specific electrical characteristics and pin configuration within this family. This model represents a standard frequency option optimized for general-purpose timing applications requiring compact form factors.

Crystals Replacement Considerations

Direct substitutes may include other 40 MHz crystals with identical 20pF load capacitance and compatible ESR values. Verify that any replacement maintains the 4-SMD, No Lead package outline to ensure mechanical fit. Check if alternative manufacturers offer components with similar frequency tolerances and temperature ranges.