ATS040BSM-1

Crystals Overview

The ATS040BSM-1 is a surface-mount MHz crystal manufactured by CTS-Frequency Controls. It operates at a fundamental frequency of 4 MHz with a load capacitance of 18 pF. The component features a frequency tolerance of ±30 ppm and stability of ±50 ppm. Equivalent series resistance is 120 Ohms. It utilizes an HC-49/US-SM package, measuring 11.10mm x 4.83mm x 4.30mm. Operating temperature ranges from -20°C to 70°C.

Crystals Feature Summary

• Surface-mount design compatible with automated assembly processes
• Fundamental mode operation for precise frequency control
• Compliant with RoHS3 environmental standards

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• General-purpose digital circuit oscillators

Crystals Procurement Notes

Verify the specific suffix and load capacitance requirements against the target circuit design before procurement. Confirm that the HC-49/US-SM footprint matches the PCB layout constraints. Ensure the operating temperature range meets the application environment specifications. Cross-reference the manufacturer part number with distributor codes to avoid ordering errors during supply chain management.

Crystals Selection Notes

Select this component when a 4 MHz fundamental frequency with 18 pF load capacitance is required. Consider the ±30 ppm tolerance for applications needing moderate frequency accuracy. Evaluate the 120 Ohm ESR against the oscillator circuit capabilities. Compare physical dimensions against available board space in compact electronic designs.

Crystals Part Context

This part belongs to the ATS-SM series of surface-mount crystals from CTS-Frequency Controls. It shares the HC-49/US-SM form factor with other variants in the lineup but differs in electrical parameters such as load capacitance and frequency tolerance. It serves as a direct surface-mount alternative to through-hole HC-49/US crystals.

Crystals Replacement Considerations

ATS040BSM-1E is listed as a similar variant within the same series.