B78476A8067A003

Overview

The B78476A8067A003 is a LAN transformer module from the EPCOS-B78476A series, designed for signal transformation in network applications. It operates within a frequency range of 100 kHz to 100 MHz and supports 10/100 Base-T standards. The component features a single channel configuration with primary and secondary coil impedances of 1 Ohm. It provides an insulation voltage of 1.5 kV and functions reliably between -40°C and +85°C. Physical dimensions vary by variant, with lengths up to 28.1 mm, widths up to 15.2 mm, and heights up to 8.41 mm.

Feature Summary

• Supports 10/100 Base-T Ethernet signaling
• Provides galvanic isolation via high insulation voltage
• Optimized for compact LAN interface integration

Applications

• 10/100 Base-T network interfaces
• LAN port signal conditioning
• Ethernet PHY coupling circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact electrical parameters and mechanical footprint. Ensure the selected variant matches the required impedance and insulation ratings for the target design. Cross-reference the part number with the latest TDK Electronics documentation to validate current production status and compliance details before finalizing procurement specifications.

Selection Notes

Select this component based on its compatibility with 10/100 Base-T protocols and its specified operating temperature range. Evaluate the physical dimensions to ensure fit within the intended PCB layout constraints. Confirm that the single-channel architecture meets the system's isolation requirements. Review the official datasheet for precise pinout definitions and mounting recommendations to guarantee reliable integration into the network interface circuit.

Part Context

This component belongs to the B78476A series of magnetics modules manufactured by EPCOS, now part of TDK Electronics. These modules are specialized for LAN applications, providing essential signal transformation and isolation for Ethernet connections. The series is engineered to meet industry standards for data communication interfaces, ensuring robust performance in various networking equipment designs.

Replacement Considerations

Consult the official TDK Electronics replacement guide or cross-reference list for verified substitute part numbers. Do not assume functional equivalence with other LAN transformers without explicit manufacturer confirmation. Verify that any alternative component matches the critical electrical and mechanical specifications defined in the original datasheet.