CSM1Z-A5B2C3-120-7.3728D18

Crystals Overview

The CSM1Z-A5B2C3-120-7.3728D18 is a surface-mount quartz crystal resonator manufactured by Cardinal Components Inc. It operates at a fundamental frequency of 7.3728 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 120 Ohms. The component utilizes the HC-49/US package format, measuring approximately 11.60 mm in length and 4.70 mm in width, with a maximum height of 4.60 mm. Designed for base mode operation, it offers a frequency tolerance of ±30 ppm and stability of ±50 ppm within a commercial operating temperature range of -20°C to +70°C.

Crystals Feature Summary

• Surface-mount design utilizing the standard HC-49/US package footprint for automated assembly compatibility.
• Fundamental mode quartz crystal resonator providing stable oscillation at 7.3728 MHz.
• RoHS compliant construction ensuring lead-free manufacturing standards.

Crystals Applications

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

Crystals Procurement Notes

Verify the specific ESR value of 120 Ohms against circuit requirements, as other variants in this series may differ. Confirm the HC-49/US package dimensions match the PCB land pattern. Ensure the operating temperature range of -20°C to +70°C aligns with the target environment. Check RoHS compliance status if required by project specifications. Validate the 18 pF load capacitance matches the oscillator circuit design.

Crystals Selection Notes

Select this component when a standard HC-49/US form factor is required in a surface-mount configuration. The 7.3728 MHz frequency is suitable for baud rate generation in serial communications. Consider the 120 Ohm ESR limit to ensure proper oscillator startup conditions. The ±30 ppm tolerance provides adequate precision for most general digital applications.

Crystals Part Context

This part belongs to the CSM1 series of surface-mount crystals from Cardinal Components Inc. These components are designed as direct replacements for traditional through-hole HC-49/U crystals while enabling modern SMD assembly processes. The series covers various frequencies and ESR values, with this specific variant targeting the 7.3728 MHz market segment.

Crystals Replacement Considerations

Abracon ABLS-27.000MHZ-B2F-T and ABLS-27.000MHZ-B4-FT are listed as parameter-equivalent alternatives in distributor databases, though they operate at 27 MHz rather than 7.3728 MHz. Verify electrical compatibility before substitution.