B78417A2286A003

Current Sense Transformers Overview

The B78417A2286A003 is a surface-mount current sense transformer from the EPCOS B78417 series, utilizing an EP7 ferrite core. It features a 1:70 turns ratio and operates within a frequency range of 50 kHz to 250 kHz. The component has primary and secondary winding resistances of 1.9 mOhm and 2.9 Ohm, respectively, with a magnetizing inductance of 3 mH. Dimensions are 10.60 mm x 12.20 mm x 11.00 mm (max). It undergoes a type test of 2400 V AC for 60 seconds between windings.

Current Sense Transformers Feature Summary

• Compact surface-mount design suitable for automated assembly
• High isolation voltage capability for safety-critical applications
• Optimized magnetic coupling for accurate current sensing

Current Sense Transformers Applications

• Power supply current monitoring
• Inverter control circuits
• Motor drive feedback systems

Current Sense Transformers Procurement Notes

Verify the specific suffix code against official TDK documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with peak current ratings in the target circuit. Confirm RoHS compliance status through the manufacturer's latest datasheet before final procurement.

Current Sense Transformers Selection Notes

Select this component for applications requiring precise galvanic isolation and high-frequency current measurement. Evaluate thermal performance under continuous load conditions. Consider physical footprint constraints during PCB layout to ensure adequate clearance for the specified isolation voltage rating.

Current Sense Transformers Part Context

This part belongs to the B78417 series of SMT current transformers designed for power electronics. These components are engineered for compact designs in modern electronic equipment. The series supports various turns ratios to accommodate different sensing requirements across industrial and consumer applications.

Current Sense Transformers Replacement Considerations

Consult official substitution lists for equivalent models with matching turns ratios and core materials. Verify dimensional compatibility and pinout alignment before implementation.