B78417A2185A003

Current Sense Transformers Overview

The B78417A2185A003 is an invasive surface-mount current sense transformer from EPCOS (TDK Electronics), designed for power electronics applications. It utilizes the EP7 ferrite core and operates within a frequency range of 50 to 500 kHz. The component undergoes a high voltage type test of 2400 V AC at 50 Hz for one second between windings.

Current Sense Transformers Feature Summary

• Compact surface-mount design suitable for automated assembly
• EP7 ferrite core construction for efficient magnetic coupling
• Invasive sensing topology for precise current monitoring

Current Sense Transformers Applications

• Automotive electronics systems
• Power electronic circuits
• Current sensing in switching power supplies

Current Sense Transformers Procurement Notes

Verify the complete part number including the suffix A003 to ensure correct configuration. Confirm that the EP7 core variant matches the specific application requirements. Check datasheet specifications for insulation ratings and thermal limits before integration into final assemblies.

Current Sense Transformers Selection Notes

Select this component when invasive current measurement is required in compact automotive or industrial power designs. Ensure the operating frequency falls within the 50-500 kHz range. Verify that the physical footprint and pinout are compatible with the target PCB layout and soldering process.

Current Sense Transformers Part Context

This model belongs to the B78417A series of SMT current transformers introduced by TDK/EPCOS. These components are engineered specifically for the demanding environment of automotive electronics and general power conversion, offering a balance of size and performance through their specialized ferrite core technology.

Current Sense Transformers Replacement Considerations

Consult official TDK Electronics documentation for qualified substitute part numbers. Do not assume cross-compatibility with other series without verifying electrical parameters and mechanical dimensions against the original specification sheet.