B78476A8068A003

Overview

The B78476A8068A003 is a surface-mount magnetics module designed for LAN applications, specifically supporting 10/100 Base-T Ethernet standards. Manufactured by EPCOS (TDK Electronics), this component integrates pulse transformers and common mode chokes within a compact SMD package. It operates within an extended commercial temperature range of -40°C to +85°C. The module utilizes ferrite core technology to ensure signal integrity and electrical isolation in network interface circuits.

Feature Summary

• Integrated magnetics solution combining pulse transformers and common mode chokes for complete LAN signal conditioning
• Designed specifically for 10/100 Base-T Ethernet physical layer interfaces
• Constructed with ferrite core materials to optimize high-frequency performance and noise suppression

Applications

• Local Area Network (LAN) interface circuits
• Ethernet hub and switch port implementations
• Computer network adapter cards
• Industrial communication modules requiring 10/100 Mbps connectivity

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pinout compatibility and insulation voltage ratings. Ensure the procurement channel provides original manufacturer documentation to validate the component's authenticity and traceability. Cross-reference the full part number with official TDK-EPCOS catalogs to avoid substitutions that may differ in thermal or electrical specifications.

Selection Notes

Select this module when designing 10/100 Base-T Ethernet interfaces requiring integrated magnetics in a surface-mount form factor. Consider the -40°C to +85°C operating range for commercial environments. Verify that the package dimensions fit the PCB layout constraints and that the insulation requirements meet the safety standards of the target application system.

Part Context

This component belongs to the B78476 series of magnetics modules from EPCOS, now part of TDK Electronics. The series focuses on providing compact, integrated magnetic solutions for Ethernet networking applications. These modules simplify design by combining multiple passive components into a single surface-mount device, reducing board space and assembly complexity for network hardware.

Replacement Considerations

Consult the official TDK-EPCOS replacement guide for direct equivalents. Verify that any substitute part maintains identical pin configuration, impedance characteristics, and insulation voltage levels to ensure functional compatibility in existing 10/100 Base-T designs.