B4003T

Overview

The B4003T is a surface-mount common mode choke manufactured by Pulse Electronics. It features two lines and is designed for xDSL applications. The component has an inductance of 4700uH and a DC resistance of 1 Ohm. It utilizes a vertical package with eight flat leads for PCB mounting.

Feature Summary

• Designed specifically for xDSL signal filtering
• Surface mount construction for automated assembly
• Dual-line configuration for common mode noise suppression

Applications

• xDSL line protection
• Telecommunications equipment filtering
• Common mode noise suppression in data lines

Procurement Notes

Verify the current manufacturing status as sources indicate this part may be obsolete. Confirm availability through authorized distributors or check for direct substitutes like the B4003NLT if production units are required. Ensure the specific package variant matches design requirements before ordering.

Selection Notes

Select this component for applications requiring high inductance in a compact surface-mount form factor. Verify that the 1 Ohm DC resistance meets circuit loss budgets. Ensure the eight-lead vertical package footprint aligns with the PCB layout constraints.

Part Context

This component belongs to the Pulse Electronics common mode choke family, specifically tailored for digital subscriber line (xDSL) interfaces. It serves as a passive filter to attenuate electromagnetic interference while maintaining signal integrity on data transmission lines.

Replacement Considerations

The B4003NLT is listed as a direct substitute. Verify pin compatibility and electrical specifications before swapping components in existing designs.