PCS040-EF1303KS

Current Sense Transformers Overview

The Bourns PCS040-EF1303KS is a surface-mount current sense transformer designed for high-frequency applications. It features a primary-to-secondary turns ratio of 1:60 and supports a maximum primary current rating of 40 A. The component exhibits an inductance of 3.06 mH and operates within a frequency range up to 1 MHz. Electrical characteristics include a maximum primary DC resistance of 1 mOhm and a secondary DC resistance of 850 mOhm. The device is housed in a compact SMD package suitable for automated assembly processes.

Current Sense Transformers Feature Summary

• Invasive current sensing topology utilizing magnetic coupling for galvanic isolation
• Optimized for high-frequency operation with a 1 MHz bandwidth capability
• Surface-mount construction facilitating direct integration into PCB layouts

Current Sense Transformers Applications

• High-frequency switching power supply current monitoring
• Industrial motor drive protection circuits
• Battery management system current measurement

Current Sense Transformers Procurement Notes

Verify the specific suffix 'EF1303' against project requirements, as it denotes the 1:60 turns ratio variant distinct from other models like EF126 or EF1304. Confirm that the 40 A current rating aligns with peak load conditions. Ensure the surface-mount footprint matches the design layout. Check regional availability status prior to finalizing procurement plans.

Current Sense Transformers Selection Notes

Select this component when invasive sensing is acceptable and precise current replication via a 1:60 ratio is required. The low primary resistance minimizes insertion loss, while the 3.06 mH inductance ensures adequate signal integrity at operating frequencies. Consider thermal performance under continuous 40 A loads and verify compatibility with the target PCB soldering profile.

Current Sense Transformers Part Context

This part belongs to the Bourns PCS series of current sense transformers, which are engineered for robust performance in demanding power electronics environments. The series offers various turns ratios and current ratings to accommodate different sensing needs. The EF1303 variant specifically targets applications requiring higher step-down ratios compared to standard 1:10 or 1:20 configurations.

Current Sense Transformers Replacement Considerations

Direct substitutes within the same family include the PCS040-EF1304KS (1:70 ratio) and PCS040-EF126KS (1:10 ratio). These alternatives share identical physical dimensions and current ratings but differ in electrical transformation ratios. Verify circuit compatibility before swapping between these variants.