AWSCR-4.91CRLA-C15-T3

Overview

The AWSCR-4.91CRLA-C15-T3 is a surface-mount ceramic resonator from the Abracon AWSCR-CRLA series, operating at a nominal frequency of 4.91 MHz. It features an integrated load capacitance of 15 pF and a maximum motional resistance of 40 Ohms. The component exhibits a frequency tolerance of ±0.5% and a stability of ±0.3%. Designed for robust performance, it operates within a temperature range of -40°C to +85°C. The device utilizes a 3-SMD non-standard package with dimensions of 4.50mm in length, 2.00mm in width, and 1.2mm in height.

Feature Summary

• Integrates built-in capacitors to simplify circuit design and reduce component count
• Provides stable oscillation with high frequency accuracy for precision timing applications
• Offers reliable operation across extended industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication interface timing circuits
• General-purpose oscillator circuits requiring precise frequency control

Procurement Notes

Verify that the replacement part matches the specific 4.91 MHz frequency, 15 pF load capacitance, and 40 Ohm impedance parameters. Confirm the 3-SMD non-standard package footprint compatibility with the target PCB layout. Ensure the selected variant meets the required -40°C to +85°C operating temperature range and RoHS compliance standards for the intended application environment.

Selection Notes

Select this component when a compact, cost-effective timing solution is needed without external capacitors. The integrated capacitor design reduces board space and assembly complexity compared to discrete crystal setups. Consider the ±0.3% stability requirement against system timing constraints. Evaluate the 40 Ohm impedance against the driving capability of the host microcontroller or oscillator circuit to ensure reliable startup and sustained oscillation.

Part Context

This part belongs to the AWSCR-CRLA series of miniature ceramic resonators from Abracon LLC. These components are designed as drop-in replacements for traditional quartz crystals in applications where size and cost are critical factors. The series offers various frequencies and capacitance values to suit different timing requirements while maintaining a consistent small form factor suitable for modern surface-mount manufacturing processes.

Replacement Considerations

• CSTNE4M91G550000R0 (Murata Electronics)