CSTCR4M20G55-R0

Resonators Overview

The CSTCR4M20G55-R0 is a ceramic resonator from Murata Electronics' CERALOCK series, designed for surface-mount applications. It operates at a nominal frequency of 4.2 MHz with a tolerance of ±0.5%. The component features an integrated load capacitance of 39 pF, eliminating the need for external capacitors in oscillation circuits. It is housed in a compact SMD package measuring 4.5 mm in length, 2 mm in width, and 1.15 mm in height. The device supports an operating temperature range from -20°C to +80°C.

Resonators Feature Summary

• Integrated load capacitance removes requirement for external components
• Compact surface-mount design suitable for space-constrained layouts
• High stability ceramic construction for reliable frequency generation

Resonators Applications

• Microcontroller clock sources
• Communication module timing circuits
• Consumer electronics control systems

Resonators Procurement Notes

Verify the specific suffix 'R0' corresponds to the standard commercial grade (-20°C to +80°C) rather than extended industrial variants. Confirm that the 39 pF internal capacitance matches the oscillator circuit requirements. Ensure the ordering quantity aligns with the reel packaging specifications provided by the manufacturer.

Resonators Selection Notes

Select this component when a stable 4.2 MHz reference is required without external capacitor complexity. Consider the ±0.5% tolerance for precision timing needs. Evaluate the -20°C to +80°C temperature range against environmental conditions. Compare physical dimensions against PCB footprint constraints.

Resonators Part Context

This part belongs to the CSTCR_G series of small-cap chip type ceramic resonators. It utilizes Murata's proprietary CERALOCK technology to integrate piezoelectric elements and capacitors into a single package. This series offers a cost-effective alternative to quartz crystals for applications where moderate frequency stability is sufficient.

Resonators Replacement Considerations

Direct substitutes within the same series include CSTCR4M10G55-R0 (4.1 MHz) and CSTCR4M60G55-R0 (4.6 MHz). For identical frequency but different temperature ranges, consider the CSTCR4M20G55B-R0 variant if extended thermal performance is required.