CM2545X171R-00

Overview

The CM2545X171R-00 is a surface-mount common mode choke manufactured by Laird-Signal Integrity Products. It features a two-line configuration designed for filtering power and signal lines. The component exhibits an impedance of 170 Ohms at 100 MHz and supports a rated current of 10 Amperes. Its direct current resistance (DCR) is specified as 10 milliohms. The device utilizes a 2545 package dimension, measuring approximately 2.5mm by 4.5mm. It operates within a temperature range of -40°C to +125°C. This part is identified as obsolete and no longer in production.

Feature Summary

• Dual-line common mode filtering architecture
• High current handling capability
• Low DC resistance design
• Surface mount construction

Applications

• Power supply line filtering
• Signal line noise suppression
• EMI reduction in electronic circuits

Procurement Notes

This component is officially classified as obsolete and no longer in active manufacturing. Verification of availability should focus on surplus or secondary market sources rather than standard distributor channels. Confirm RoHS compliance status carefully, as the -00 suffix often indicates non-compliant material composition compared to the -10 variant. Ensure substitute parts are validated for electrical equivalence before integration into new designs.

Selection Notes

Designers requiring this specific impedance and current rating must account for the discontinued status. The primary selection consideration is identifying a functional equivalent that matches the 170 Ohm impedance at 100 MHz and 10A current rating. Verify that alternative components fit the same footprint and thermal requirements. Cross-reference with Laird's current HI or CM series products for modern alternatives.

Part Context

This part belongs to Laird-Signal Integrity Products' passive component portfolio, specifically within their EMI filtering category. Common mode chokes in this series are engineered to suppress electromagnetic interference on differential pairs or dual conductors. The 2545 package size offers a balance between current capacity and board space efficiency for industrial and consumer applications.

Replacement Considerations

The CM2545X171R-10 is documented as a direct replacement. Both share identical electrical specifications including 170 Ohm impedance and 10A rating. The -10 suffix typically denotes RoHS compliance, whereas the -00 version may contain lead. Verify pinout and mechanical dimensions remain consistent when substituting.