BWCU00121008900Y03

Overview

The BWCU00121008900Y03 is a surface-mount common mode choke manufactured by Pulse Electronics. It features an impedance of 90 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 250 mA and has a maximum DC resistance (RDC) of 0.30 Ohms. It operates within a temperature range of -40°C to +105°C. The physical dimensions are 1.25 mm in length, 1 mm in width, and 0.8 mm in height. It utilizes SMD/SMT termination and is designed for PCB mounting.

Feature Summary

• Provides common mode noise filtering for high-speed data lines
• Compact surface-mount design suitable for space-constrained applications
• Unshielded construction for standard EMI suppression needs

Applications

• USB interface protection
• IEEE 1394b bus lines
• LVDS signal integrity enhancement

Procurement Notes

Verify the specific manufacturer part number against official Pulse Electronics documentation to ensure compatibility with design requirements. Confirm that the 90 Ohm impedance and 250 mA current rating align with the target circuit specifications. Check for any updated RoHS compliance details or alternative packaging options such as cut tape or reel configurations before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring common mode rejection for USB or similar high-speed interfaces. Ensure the board layout accommodates the 1.25 mm x 1 mm footprint. Verify that the operating environment stays within the -40°C to +105°C range. Consider the unshielded nature of the device when assessing electromagnetic interference susceptibility in dense PCB layouts.

Part Context

This component belongs to the BWCU series of compact common mode chokes from Pulse Electronics. The series offers various impedance values ranging from 25 Ohms to 2200 Ohms. These devices are engineered for protecting sensitive data lines against common mode noise while maintaining signal integrity in high-speed digital communication systems.

Replacement Considerations

The part alias CUWI11T-900Y-N may serve as a functional equivalent. Verify electrical parameters and physical dimensions before substitution.