749252100

Current Sense Transformers Overview

The Würth Elektronik 749252100 is a board-mount current sensing transformer from the WE-CST series. It features a 1:100 turns ratio and an inductance of 820 µH. The component supports a maximum current rating of 7 A with a secondary DC resistance of 9.5 Ohms. Designed for surface mount technology, it measures 4.7 mm in length, 4.65 mm in width, and 3.55 mm in height. It operates within a temperature range of -40°C to +125°C and has a frequency response up to 1 MHz.

Current Sense Transformers Feature Summary

• Integrated magnetic core design for efficient current sensing
• Surface mount construction for automated PCB assembly
• High current handling capability up to 7 A
• Wide operating temperature range for industrial environments

Current Sense Transformers Applications

• Switch-mode power supply (SMPS) current monitoring
• Overcurrent protection circuits
• Battery management systems
• Industrial motor control applications

Current Sense Transformers Procurement Notes

Verify the specific package variant and tape/reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the 1:100 ratio and 820 µH inductance align with your circuit requirements. Ensure compatibility with standard SMT reflow profiles. Check for any updated compliance certifications or marking changes. Cross-reference the footprint dimensions to validate PCB layout constraints.

Current Sense Transformers Selection Notes

Select this component when a high-current, low-profile current sense transformer is required. The 1:100 ratio provides a balanced trade-off between signal isolation and voltage drop. Consider the 7 A rating for robust performance in power stages. The wide temperature range suits demanding industrial conditions. Verify that the 1 MHz bandwidth meets the switching frequency needs of the target application.

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 isolated current measurement in power electronics. The series offers various ratios and inductance values to suit different power levels. The 749252100 specifically targets higher current applications requiring reliable thermal stability.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.