AWSCR-4.91CRLB-C15-T3

Overview

The AWSCR-4.91CRLB-C15-T3 is a surface-mount ceramic resonator manufactured by Abracon LLC, designed for precision timing applications. It operates at a nominal frequency of 4.91 MHz with a frequency tolerance of ±0.5%. The component features an integrated load capacitance of 15 pF and a resonance resistance of 40 ohms. It offers a frequency stability of ±0.4% and is rated for operation within a temperature range of -40°C to +125°C. The physical dimensions are 4.5 mm in length and 1 mm in height, facilitating compact integration into electronic circuits.

Feature Summary

• Integrated load capacitance eliminates external capacitor requirements
• Surface mount package design for automated assembly
• Wide operating temperature range for industrial environments

Applications

• Microcontroller clock sources
• Communication module timing
• Industrial control systems

Procurement Notes

Verify the specific suffix CRLB against project requirements to ensure compatibility with intended frequency stability and temperature ranges. Confirm that the 15 pF internal capacitance aligns with the oscillator circuit design specifications. Check RoHS compliance status if required by environmental regulations. Ensure the surface mount footprint matches the PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a stable 4.91 MHz reference is required with minimal external components. The ±0.4% stability suits applications demanding higher precision than standard ceramic resonators. Consider the 40 ohm impedance for driver circuit matching. Evaluate the -40°C to +125°C range against environmental conditions. Compare against crystal oscillators if phase noise performance is critical.

Part Context

This part belongs to the AWSCR-CRLB series of miniature ceramic resonators from Abracon. These devices provide a cost-effective alternative to quartz crystals for applications where moderate stability suffices. The series is characterized by built-in capacitors and surface mount packaging, supporting high-volume manufacturing processes in consumer and industrial electronics.

Replacement Considerations

AWSCR-4.91CRLA-C15-T3 is a related variant with different stability ratings.