BWCU00322518601Y00

Overview

The BWCU00322518601Y00 is a two-line surface mount common mode choke manufactured by Pulse Electronics. It features an impedance of 600 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 1A and has a maximum DC resistance (DCR) of 180 mOhms. Designed for PCB mounting, it operates within a temperature range of -40°C to +105°C. The physical dimensions are 3.2 mm in length, 2.5 mm in width, and 1.8 mm in height. It is supplied in tape and reel packaging.

Feature Summary

• Provides common mode noise suppression for differential signal lines
• Unshielded construction suitable for standard EMI filtering applications
• Surface mount design optimized for automated PCB assembly processes

Applications

• USB interface circuits
• IEEE 1394b (FireWire) data lines
• LVDS (Low-Voltage Differential Signaling) applications

Procurement Notes

Verify the specific impedance tolerance and DCR values against the official datasheet prior to procurement, as manufacturing revisions may alter these parameters. Confirm that the 1A current rating aligns with the peak operational requirements of the target circuit to prevent saturation. Ensure the horizontal package footprint matches the designated PCB land pattern to avoid mechanical installation errors during assembly.

Selection Notes

Select this component when high impedance attenuation is required for high-speed differential interfaces such as USB or FireWire. The 1A current rating distinguishes it from lower-current variants in the BWCU series, making it suitable for power-sensitive data lines. Consider the unshielded nature of the device regarding proximity to other sensitive components, as magnetic coupling may occur if spacing is insufficient.

Part Context

This part belongs to the BWCU series of SMD common mode chokes from Pulse Electronics. It shares the same physical footprint family with other models like BWCU00321619900M02 but offers different electrical characteristics. The series is specifically engineered for compact consumer electronics and industrial control boards requiring efficient EMI reduction in space-constrained environments.

Replacement Considerations

Direct substitutes include BWCU00321619900M02 for lower impedance needs or BWCU00121008250T02 for smaller footprints. Verify pin compatibility and thermal performance before swapping, as DCR and saturation currents vary significantly across the series.