ACM-21-181M-T

Overview

The Abracon ACM-21-181M-T is a surface-mount common mode choke from the ACM-21 series. It provides an impedance of 180 Ohms at 100 MHz with a rated current of 330 mA and a maximum DC resistance of 350 mOhms. The component operates within a temperature range of -40°C to +125°C.

Feature Summary

• Dual-line surface mount construction for compact circuit integration
• Designed for effective suppression of common mode noise in high-speed data lines
• Robust thermal stability supporting operation up to 125°C

Applications

• High-speed serial interface filtering
• USB port noise suppression
• HDMI signal line protection
• Ethernet differential pair filtering

Procurement Notes

Verify the specific suffix 'M' against the manufacturer's latest datasheet to confirm impedance tolerance and material composition. Ensure the ordering part number matches the required package dimensions and termination style for your PCB footprint. Cross-reference the RoHS status directly with official documentation prior to procurement.

Selection Notes

Select this component based on its 180 Ohm impedance profile at 100 MHz, which suits standard digital signaling frequencies. The 330 mA current rating must exceed the peak operating current of the protected line. Verify that the 350 mOhm DCR meets voltage drop requirements for the specific application circuit design.

Part Context

This device belongs to the ACM-21 family of chip wire-wound common mode chokes manufactured by Abracon Corporation. These components are engineered for surface mount technology (SMT) assembly, offering a low-profile solution for electromagnetic interference (EMI) mitigation in portable electronics and communication devices.

Replacement Considerations

Direct substitutes include other ACM-21 series variants with matching impedance and current ratings. Verify pin compatibility and physical dimensions before swapping. Consult the manufacturer's cross-reference guide for equivalent parts with adjusted tolerance or packaging options.