B82801A1743A030

Current Sense Transformers Overview

The B82801A1743A030 is a surface-mount current sense transformer manufactured by EPCOS, a TDK Electronics brand. It features an inductance of 74 µH and supports a frequency range from 50 kHz to 1 MHz. The component has a turns ratio of 1:30, with a maximum operating temperature of +125°C. Physical dimensions include a height of 3.5 mm, length of 4.85 mm, and width of 3.5 mm. It exhibits a low primary resistance of 2.5 mOhms and a rated voltage of 8.6V. This SMT device is designed for precise current monitoring applications within power electronics systems.

Current Sense Transformers Feature Summary

• Surface-mount construction for automated assembly integration
• High-frequency operation capability up to 1 MHz
• Low primary winding resistance for minimal signal loss
• Fixed 1:30 turns ratio for accurate current sensing

Current Sense Transformers Applications

• Current monitoring in DC-DC converters
• Power supply feedback loop control
• Over-current protection circuits
• Industrial power management systems

Current Sense Transformers Procurement Notes

Verify the specific ordering suffix against official TDK documentation to ensure correct packaging and lead time specifications. Confirm that the surface-mount footprint matches the design requirements before procurement. Check for RoHS compliance status if environmental regulations apply to the final product assembly. Ensure storage conditions align with manufacturer guidelines to maintain component integrity prior to soldering.

Current Sense Transformers Selection Notes

Select this component when a high-frequency current sense transformer with a 1:30 ratio is required. The 74 µH inductance suits applications operating between 50 kHz and 1 MHz. Consider the 3.5 mm height limit for space-constrained PCB layouts. The low 2.5 mOhm resistance minimizes voltage drop across the primary side. Verify thermal stability requirements against the +125°C maximum operating temperature rating.

Current Sense Transformers Part Context

This part belongs to the B82801 series of SMT current sense transformers from EPCOS/TDK. The series provides various inductance values and turns ratios for different power conversion needs. These components are widely used in modern switching power supplies where compact size and high accuracy are critical. The A1743A030 designation specifies the unique electrical and physical parameters within this family.

Current Sense Transformers Replacement Considerations

Consult official TDK cross-reference lists for verified substitutes. Ensure replacement parts match the 74 µH inductance, 1:30 ratio, and 3.5 mm height constraints. Verify compatibility with existing PCB footprints and thermal management strategies.