B82801B0324A040

Current Sense Transformers Overview

The B82801B0324A040 is a surface-mount current sense transformer from the EPCOS (TDK) B82801B series, designed for board mounting applications. It features an E5 core construction with a turns ratio of 1:40 and a minimum inductance of 80 µH up to 3000 µH. The component supports sensed currents up to 20 A and offers very low DC resistance. Physical dimensions are 7.11 mm in length, 8.31 mm in width, and 5.08 mm in thickness. It operates within a temperature range of -40°C to +125°C.

Current Sense Transformers Feature Summary

• Surface-mount technology compatible design
• Very low DC resistance for minimal signal loss
• E5 core construction for compact footprint
• Supports various turns ratios including 1:40

Current Sense Transformers Applications

• Switching power supplies
• Feedback control circuits
• Overload sensing systems
• Load drop detection
• Shut down detection mechanisms

Current Sense Transformers Procurement Notes

Verify the specific manufacturer designation, as this component is part of the TDK Electronics portfolio following the acquisition of EPCOS. Confirm that the ordering suffix matches the required turns ratio and inductance specifications for your circuit design. Ensure compatibility with surface-mount assembly processes given the physical dimensions and package type. Check for any specific handling requirements related to the E5 core structure during procurement and storage.

Current Sense Transformers Selection Notes

Select this component when a compact surface-mount current sense transformer is required for high-frequency switching applications. The 1:40 turns ratio provides appropriate signal scaling for monitoring currents up to 20 A. Consider the low DC resistance feature if minimizing insertion loss is critical. Verify that the operating temperature range of -40°C to +125°C meets the environmental conditions of the target application.

Current Sense Transformers Part Context

This part belongs to the B82801B series of SMT current sense transformers manufactured by EPCOS, now integrated into TDK Electronics. The series utilizes E5 cores and offers a wide range of inductance values from 80 µH to 3000 µH. These components are specifically engineered for board-mounted applications requiring precise current monitoring in modern electronic power systems.

Current Sense Transformers Replacement Considerations

Consult official TDK/EPCOS documentation for direct cross-references within the B82801B family. Alternative parts must match the 1:40 turns ratio, E5 core form factor, and similar electrical characteristics. Verify pinout compatibility and thermal performance before substituting with generic current sense transformers.