B82801A0185A150

Current Sense Transformers Overview

The B82801A0185A150 is a surface-mount current-sense transformer from the EPCOS B82801A series, designed for invasive current monitoring applications. It features an EE 4.2 core and operates within a frequency range of 50 kHz to 1 MHz. The component has a turns ratio of 1:150 and supports a rated primary current of 7 A. Key electrical parameters include a primary inductance of 1.84 mH, a primary DC resistance of 2.5 mOhm, and a secondary DC resistance of 21 Ohm. The maximum height is 3.50 mm.

Current Sense Transformers Feature Summary

• Invasive current sensing topology utilizing a 1:150 turns ratio for precise signal isolation.
• Surface-mount construction with an EE 4.2 core optimized for high-frequency operation up to 1 MHz.
• Designed for direct integration into power circuits requiring compact form factors.

Current Sense Transformers Applications

• Current monitoring in switching power supplies
• Overcurrent protection circuits in industrial electronics
• Feedback control loops in AC/DC converters

Current Sense Transformers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required tolerance and packaging specifications. Confirm that the invasive installation method aligns with the target circuit design constraints. Check for any recent product lifecycle updates or obsolescence notices directly from TDK Electronics documentation before finalizing procurement plans.

Current Sense Transformers Selection Notes

Select this component when invasive current measurement is acceptable and space constraints require a low-profile SMD solution. Ensure the operating frequency remains within the 50 kHz to 1 MHz range to maintain accuracy. Verify that the primary current rating of 7 A exceeds the maximum expected load current under all operating conditions to prevent saturation.

Current Sense Transformers Part Context

This part belongs to the B82801A series of current-sense transformers manufactured by EPCOS (TDK Electronics). The series utilizes EE cores to provide reliable magnetic coupling for current monitoring. These components are distinct from common-mode chokes or general-purpose inductors, serving specifically as isolated sensors for feedback and protection systems.

Current Sense Transformers Replacement Considerations

Consult official TDK Electronics substitution guides for verified alternative part numbers within the B82801A family. Do not assume cross-compatibility with other manufacturers' current-sense transformers without verifying pinout, inductance, and thermal characteristics against the original datasheet.

Current Sense Transformers FAQ

What is the maximum operating frequency for this transformer?

The B82801A0185A150 is specified for operation within a frequency range of 50 kHz to 1 MHz.

Is this component suitable for non-invasive current sensing?

No, the datasheet classifies this device as an invasive type, requiring the primary conductor to pass through the core window.