749252070

Current Sense Transformers Overview

The Würth Elektronik 749252070 is a surface-mount current sense transformer from the WE-CST series. It features a 1:7 turns ratio and a primary DC resistance of 3 milliohms with a secondary resistance of 4.6 ohms. The component has an inductance of 400 µH and supports a maximum current of 7 A. It operates within a temperature range of -40°C to +125°C. Dimensions are 4.7 mm x 4.65 mm x 3.55 mm, utilizing SMD/SMT termination.

Current Sense Transformers Feature Summary

• Provides galvanic isolation for accurate current monitoring in power circuits
• Optimized for high-frequency operation up to 1 MHz
• Compact surface-mount design facilitates automated PCB assembly

Current Sense Transformers Applications

• Current sensing in AC/DC converters
• Monitoring in offline flyback switchers
• General-purpose power supply designs

Current Sense Transformers Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributors before finalizing procurement. Ensure that the selected packaging format aligns with your production line's capabilities. Confirm that the operating temperature range meets the environmental requirements of the target application.

Current Sense Transformers Selection Notes

Select this component when a compact, high-isolation current transformer is required for switching power supplies. The 1:7 ratio suits applications needing precise current feedback without excessive signal attenuation. Consider the 400 µH inductance for stability at the intended switching frequency. Evaluate the 7 A rating against peak load conditions to ensure reliable performance.

Current Sense Transformers Part Context

This part belongs to the WE-CST series of current sense transformers by Würth Elektronik. These components are designed for board-mount applications requiring robust isolation and low profile. The series supports various ratios and current ratings to accommodate different power management architectures.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available.