B82801B0984A070

Current Sense Transformers Overview

The B82801B0984A070 is a surface-mount current sense transformer from the EPCOS (TDK Electronics) B82801B series. It features an inductance of 980 µH and operates within a frequency range of 50 kHz to 1 MHz. The component utilizes a 1:70 turns ratio, with a primary DC resistance of 0.8 mΩ and a secondary DC resistance of 4.75 Ω. Designed for invasive current sensing applications, it supports sensed currents up to 20 A. The device is packaged in a reel format suitable for automated SMT assembly.

Current Sense Transformers Feature Summary

• Surface-mount construction optimized for automated pick-and-place manufacturing processes
• Invasive current sensing capability supporting up to 20 A measured current
• High-frequency operation suitable for switching power supply environments

Current Sense Transformers Applications

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

Current Sense Transformers Procurement Notes

Verify the specific ordering code against official TDK Electronics documentation to ensure correct pinning and tolerance specifications. Confirm that the 1:70 turns ratio aligns with the target circuit's impedance requirements. Check RoHS compliance status via the manufacturer's material data sheets prior to final integration into the design.

Current Sense Transformers Selection Notes

Select this component when invasive current monitoring is required in high-frequency switching applications. Ensure the PCB layout accommodates the surface-mount package dimensions. Verify that the 980 µH inductance provides sufficient signal integrity for the intended feedback or protection loop without introducing excessive phase lag at the operating frequency.

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 offers various inductance values and turns ratios to suit different power management needs. These components are widely used in industrial and consumer electronics where precise current monitoring is critical for system stability and safety.

Current Sense Transformers FAQ

What is the maximum sensed current for this transformer?

The B82801B0984A070 supports a maximum sensed current of 20 A.

Does this component support lead-free soldering processes?

Yes, the component is RoHS-compatible, allowing for use in lead-free assembly processes.