PA1005.040QNLT

Current Sense Transformers Overview

The PA1005.040QNLT is a surface-mount current sense transformer manufactured by Pulse Electronics, designed for high-frequency applications within the 50kHz to 1MHz range. It features a primary-to-secondary turns ratio of 1:40 and supports a rated current of 20 A. The component exhibits a primary DC resistance of 0.75 mOhm and a secondary maximum DC resistance of 1.14 Ohm. Its inductance is specified at a maximum of 320 µH. The device utilizes an鸥翼 (gull-wing) termination style and measures 7.21mm x 8.38mm with a maximum height of 5.50mm.

Current Sense Transformers Feature Summary

• Provides galvanic isolation between primary and secondary circuits for accurate current monitoring
• Optimized for high-frequency operation up to 1MHz suitable for switching power supplies
• Supports high primary current handling capability of 20A with low insertion loss

Current Sense Transformers Applications

• Current sensing in battery management systems (BMS)
• Isolated feedback loops in switch-mode power supplies
• Overcurrent protection circuits in industrial equipment

Current Sense Transformers Procurement Notes

Verify the specific suffix 'QNLT' against official datasheets to confirm packaging type and material compliance, as variations may exist within the PA1005 series. Ensure compatibility with RoHS3 standards if required by your assembly process. Cross-reference the manufacturer part number directly with Pulse Electronics documentation to avoid confusion with similar models like the QNL variant.

Current Sense Transformers Selection Notes

Select this component when a 1:40 turns ratio is required for current sensing applications operating above 50kHz. Consider the 20A rating and low primary resistance for efficiency-critical designs. Verify that the physical dimensions fit the available PCB real estate and that the gull-wing package aligns with the chosen assembly method.

Current Sense Transformers Part Context

This part belongs to the PA1005.XXXNL family of surface-mount current sense transformers from Pulse Electronics. These components are engineered for compact designs requiring reliable isolation and precise current measurement in high-frequency environments. The series offers various turns ratios to accommodate different sensing requirements while maintaining consistent form factors.

Current Sense Transformers Replacement Considerations

The PA1005.040QNL is a related variant within the same product family. Verify if the non-LT suffix meets specific packaging or material requirements. Other parts in the PA1005 series offer different turns ratios but share similar physical characteristics.