B82801B0803A020

Current Sense Transformers Overview

The B82801B0803A020 is a surface-mount current sense transformer from the TDK B82801B series, designed for high-frequency applications. It features a 1:20 turns ratio and operates within a frequency range of 50kHz to 1MHz. The component has a primary DC resistance of 0.8 milliohms and a secondary DC resistance of 400 milliohms. Its inductance is specified at 80 µH. The device utilizes an鸥翼 (gull-wing) termination style and measures 7.11mm x 8.13mm with a maximum height of 5.08mm. It supports operating temperatures from -40°C to 125°C and weighs approximately 0.4 grams.

Current Sense Transformers Feature Summary

• Miniaturized surface-mount design optimized for space-constrained PCB layouts
• High-frequency operation capability up to 1MHz for efficient signal sensing
• Low primary impedance construction to minimize insertion loss

Current Sense Transformers Applications

• Current sensing in switch-mode power supplies
• Isolated feedback loops in high-frequency converters
• Gate drive isolation circuits

Current Sense Transformers Procurement Notes

Verify the specific suffix A020 against the official TDK datasheet to confirm the 1:20 ratio and 80µH inductance values. Ensure the ordering code matches the required鸥翼 termination style and RoHS compliance status before finalizing procurement orders.

Current Sense Transformers Selection Notes

Select this component when a compact SMT solution is required for frequencies between 50kHz and 1MHz. The 1:20 ratio suits applications needing moderate step-up transformation. Verify that the 0.8mΩ primary resistance aligns with system loss requirements and that the physical dimensions fit the designated footprint.

Current Sense Transformers Part Context

This part belongs to the B82801B series of miniaturized current sense transformers manufactured by TDK Electronics. The series is characterized by its small form factor and suitability for modern high-density electronics. It serves as a specialized passive component for precise current monitoring in isolated environments.

Current Sense Transformers Replacement Considerations

Consult the official TDK replacement guide for direct equivalents. Generic substitutes may differ in core material or frequency response characteristics.