B78476A8317A003

Overview

The B78476A8317A003 is a pulse transformer manufactured by EPCOS (TDK Electronics), designed for high-speed Ethernet applications. It features a 1CT:1CT turns ratio and a primary inductance of 350uH. The component operates within a frequency range of 100 kHz to 100 MHz, with both primary and secondary coil impedances rated at 1 Ohm. It supports an insulation voltage of 1.5 kV and functions within a temperature range of -40°C to +85°C. Available in single-channel configurations, it utilizes surface mount packaging options including Cut Tape, MouseReel, and Reel.

Feature Summary

• Engineered for high-speed Ethernet signal transmission
• Provides galvanic isolation with 1.5 kV insulation rating
• Optimized for LAN application magnetic modules

Applications

• 1000 Base-T network interfaces
• 10/100 Base-T connectivity solutions
• Power over Ethernet (PoE) systems

Procurement Notes

Verify the specific ordering suffix against official TDK-EPC documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprint requirements and thermal management constraints before finalizing procurement orders.

Selection Notes

Select this component for designs requiring robust isolation in Gigabit and Fast Ethernet environments. Confirm that the 350uH inductance meets the specific common-mode rejection and signal integrity requirements of the target network standard.

Part Context

This part belongs to the B78476A series of audio and signal transformers from EPCOS. These components are specialized magnetics modules intended for local area network applications, providing essential signal coupling and isolation for digital communication protocols.

Replacement Considerations

Consult official cross-reference lists for verified substitutes such as the B78476A8247A003. Validate pinout and electrical parameters before substituting to ensure circuit compatibility.