B78476A8135A003

Overview

The B78476A8135A003 is a LAN pulse transformer manufactured by EPCOS (TDK Electronics). It features an inductance of 350µH and supports 10/100/1000 Base-T Ethernet applications. The component utilizes a surface mount package with a 1CT:1CT transformer ratio. It operates within an extended temperature range of -40°C to +85°C and incorporates ferrite core technology for signal integrity.

Feature Summary

• Supports 10/100/1000 Base-T Ethernet standards
• Extended operating temperature range from -40°C to +85°C
• Surface mount construction for automated assembly

Applications

• LAN network interface cards
• Ethernet switch ports
• Industrial communication modules

Procurement Notes

Verify the specific suffix A003 against official TDK-EPC documentation to confirm the exact packaging configuration and reel specifications. Ensure compatibility with the target PCB footprint and impedance requirements before finalizing procurement orders.

Selection Notes

Select this component for designs requiring integrated magnetics for Gigabit Ethernet interfaces. The 350µH inductance value and 1CT:1CT ratio are critical for matching transmission line characteristics. Confirm thermal management capabilities align with the specified -40°C to +85°C operational limits.

Part Context

This part belongs to the B78476A series of commercial magnetics modules designed for local area network applications. These components are engineered to provide isolation and signal transformation while maintaining signal integrity across varying data rates in standard Ethernet environments.

Replacement Considerations

Consult official TDK-EPC substitution lists for verified alternatives. Cross-reference pinout, inductance values, and physical dimensions when evaluating potential replacement parts to ensure functional equivalence.