ATS250SM-1E

Crystals Overview

The ATS250SM-1E is a surface-mount MHz crystal manufactured by CTS-Frequency Controls. It operates at a fundamental frequency of 25 MHz with a frequency tolerance of ±30 ppm and stability of ±50 ppm. The component features an equivalent series resistance (ESR) of 30 Ohms and utilizes series load capacitance. It is housed in an HC-49/US-SM package, measuring 11.1 mm in length, 3.8 mm to 4.83 mm in width, and 4.3 mm in height. The device supports a wide operating temperature range from -40°C to +85°C and is available in reel, cut tape, and MouseReel packaging formats.

Crystals Feature Summary

• Surface-mount design compatible with automated assembly processes
• Fundamental mode operation for precise frequency generation
• Wide industrial temperature rating for environmental resilience

Crystals Applications

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

Crystals Procurement Notes

Verify the specific suffix 'E' against the manufacturer's official datasheet to confirm compliance with RoHS3 directives and REACH status. Ensure the ordering documentation explicitly references the ATS250SM-1E part number to distinguish it from the non-E variant. Confirm that the received components match the specified HC-49/US-SM package dimensions and pin configuration before integration into the production line.

Crystals Selection Notes

Select this component when a 25 MHz fundamental frequency is required for surface-mount applications. The ±30 ppm tolerance suits general-purpose digital timing needs. Consider the 30 Ohm ESR value for oscillator circuit compatibility. The HC-49/US-SM form factor allows for direct replacement of through-hole crystals in space-constrained designs while maintaining similar electrical characteristics.

Crystals Part Context

This part belongs to the ATS-SM series of surface-mount crystals from CTS-Frequency Controls. The series offers various frequencies within the HC-49/US-SM footprint. The ATS250SM-1E specifically addresses the demand for 25 MHz timing in compact electronic assemblies. It shares mechanical dimensions with other members of the ATS-SM family but differs in electrical specifications such as frequency and tolerance.

Crystals Replacement Considerations

ATS250SM-1 is listed as a similar substitute by distributors.