CM1812B223R-1A

Overview

The CM1812B223R-1A is a surface-mount common mode choke from the Laird CM series, designed for automotive signal lines. It features a 22 µH inductance and provides an impedance of 1.2 kOhms at 10 MHz. The component supports a maximum current rating of 310 mA with a DC resistance of 1 Ohm. Housed in a compact 4532 metric (1812) package, it operates within an extended temperature range suitable for demanding environments.

Feature Summary

• Designed for improved performance and reliability in automotive applications
• Suitable for telecom and industrial signal line filtering
• Operates effectively in extended temperature ranges

Applications

• Automotive signal lines
• Telecom signal filtering
• Industrial signal filtering

Procurement Notes

Verify the specific suffix '1A' against official datasheets to confirm exact electrical characteristics, as variations may exist. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the selected packaging matches production requirements.

Selection Notes

Select this component when high-frequency noise suppression is required on low-current signal lines. The 1.2 kOhm impedance at 10 MHz offers effective attenuation for common mode interference. Verify that the 310 mA current rating meets the circuit's operational demands without saturation.

Part Context

This part belongs to the Laird CM series of automotive common mode chokes. These components are engineered to enhance signal integrity in harsh environments. The series includes various inductance values tailored for different signal line protection needs across automotive and industrial sectors.

Replacement Considerations

Check for direct substitutes within the CM1812 series such as CM1812B513R-1A or CM1812B104R-1A if higher impedance is needed. Ensure any replacement maintains the 4532 package dimensions and compatible current ratings.