CSM1-A1B2C3-50-20.0D16

Crystals Overview

The CSM1-A1B2C3-50-20.0D16 is a surface mount MHz crystal manufactured by Cardinal Components Inc. It operates at a nominal frequency of 20 MHz with a frequency tolerance of ±30ppm and stability of ±50ppm. The component features a load capacitance of 16pF and an equivalent series resistance (ESR) of 50 Ohms. It utilizes the HC-49S package, measuring 11.60mm in length and 4.70mm in width, with a maximum height of 4.60mm. The device supports a temperature range of -10°C to +70°C and is RoHS compliant.

Crystals Feature Summary

• Surface mount design for automated assembly
• AT-cut quartz construction for stability
• RoHS compliant manufacturing

Crystals Applications

• General purpose clock signal generation
• Microcontroller oscillator circuits
• Communication interface timing

Crystals Procurement Notes

Verify the specific package designation HC-49S against schematic requirements, as some sources reference HC-49/US. Confirm the load capacitance is 16pF rather than 18pF found in similar variants. Ensure the operating temperature range of -10°C to +70°C meets system environmental specifications before procurement.

Crystals Selection Notes

Select this component when a 20 MHz surface mount crystal with low ESR is required. The HC-49S form factor offers a compact footprint compared to through-hole alternatives. Consider the ±30ppm tolerance for applications requiring moderate frequency accuracy without external calibration.

Crystals Part Context

This part belongs to the Cardinal Components CSM1 series of surface mount crystals. The series provides various frequencies and package options designed for standard electronic assemblies. The CSM1 line emphasizes availability and compliance with environmental standards.

Crystals Replacement Considerations

CSM1Z-A0B2C3-50-20.0D18 is a parameter-equivalent alternative from the same manufacturer with a different load capacitance.