WCM3216F2SF-121T03

Overview

The WCM3216F2SF-121T03 is a two-line surface mount common mode choke manufactured by TAI-TECH Advanced Electronics Co., Ltd. It features a compact SMD-4P package with dimensions of 3.20mm x 1.60mm and a maximum height of 1.30mm. The component provides a nominal impedance of 120 Ohms at a test frequency of 100 MHz, with a tolerance of ±25%. It supports a rated current of 350mA and maintains a maximum DC resistance (DCR) of 0.30 Ohms. The device operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides effective common mode noise suppression in high-frequency circuits
• Designed for space-constrained surface mount applications
• Supports operation across extended industrial temperature ranges

Applications

• High-speed data line filtering
• USB interface noise suppression
• HDMI signal integrity protection

Procurement Notes

Verify the specific suffix T03 against official datasheets to confirm physical dimensions and electrical tolerances. Ensure compatibility with automated pick-and-place equipment regarding the 1.30mm height profile. Confirm RoHS compliance status through manufacturer documentation prior to integration into regulated assemblies.

Selection Notes

Select this component when circuit design requires a low-profile filter for differential pairs carrying moderate currents. The 120 Ohm impedance value targets specific noise frequencies around 100 MHz. Evaluate thermal management requirements given the 350mA current rating and 0.30 Ohm DCR to prevent self-heating issues in dense layouts.

Part Context

This part belongs to the WCM series of wire-wound common mode filters from TAI-TECH. It utilizes a standard 3216 metric footprint, widely adopted in consumer electronics and computer peripherals. The series offers various impedance options while maintaining consistent mechanical dimensions for board layout flexibility.

Replacement Considerations

Cross-reference with other 3216 footprint common mode chokes offering similar 120 Ohm impedance and 350mA current ratings. Verify pinout compatibility and ensure equivalent thermal performance characteristics before substituting.