B78476A8250A003

Overview

The B78476A8250A003 is a LAN pulse transformer module designed for 10/100/1000 Base-T applications. It features a 1CT:1CT turns ratio and a primary inductance of 350µH. The component supports surface mount installation with dimensions of 17.60mm x 12.10mm x 5.85mm. It operates within a temperature range of -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Integrated magnetic module optimized for Gigabit Ethernet signal integrity
• Surface mount construction for automated assembly processes
• Compliant with RoHS3 environmental directives

Applications

• 10/100/1000 Base-T network interface cards
• Ethernet switch port circuits
• LAN connectivity modules

Procurement Notes

Verify the specific suffix against official TDK documentation to confirm electrical tolerances and marking variations. Ensure compatibility with existing PCB footprint and reflow profiles. Cross-reference datasheet revisions to confirm current manufacturing status and compliance certifications before finalizing procurement orders.

Selection Notes

Select this component for designs requiring integrated magnetics for Gigabit Ethernet PHY interfaces. Confirm that the 350µH inductance meets the specific transformer requirements of the target network controller. Verify thermal management capabilities align with the specified operating temperature range for the intended application environment.

Part Context

This part belongs to the B78476A series of magnetic modules for LAN applications originally developed by EPCOS, now under TDK Electronics. The series provides compact solutions for Ethernet connectivity, replacing discrete transformer components to save board space and improve reliability in high-speed data transmission systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.