RFCMF1220100M4T

Common Mode Chokes Overview

The RFCMF1220100M4T is a two-line common mode choke manufactured by Walsin Technology Corporation. It features an impedance of 120 Ohms at 100 MHz and supports a maximum DC current of 200 mA. The component has a maximum DC resistance (DCR) of 2.5 Ohms. It is housed in a 1220 (0508 Metric) surface mount package with dimensions of 1.2 mm length, 2.0 mm width, and 1.2 mm height. The operating temperature range spans from -40°C to +85°C.

Common Mode Chokes Feature Summary

• Provides common mode noise suppression for differential signal lines
• Designed for surface mount PCB integration
• Constructed for operation within standard industrial temperature ranges

Common Mode Chokes Applications

• High-speed data interface protection
• Signal line filtering in electronic circuits
• Common mode interference reduction in compact devices

Common Mode Chokes Procurement Notes

Verify the specific manufacturer datasheet for the RFCMF1220100M4T to confirm electrical tolerances and RoHS compliance status. Ensure the selected variant matches the required impedance and current ratings for the target application. Cross-reference ordering information with authorized distributors to confirm availability and lead times.

Common Mode Chokes Selection Notes

Select this component based on the required 120 Ohm impedance at 100 MHz and the 200 mA current handling capability. The 1220 package size must fit the available PCB footprint. Verify that the 2.5 Ohm DCR meets the circuit's power loss constraints and that the temperature rating aligns with the operational environment.

Common Mode Chokes Part Context

This part belongs to the RFCMF series of common mode chokes from Walsin Technology Corporation. These components are designed for surface mount applications requiring noise suppression in compact form factors. The series typically serves high-density electronics where space constraints limit the use of larger through-hole filters.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers for the RFCMF1220100M4T were not identified in the provided source material.