PA1005.020QNLT

Current Sense Transformers Overview

The PA1005.020QNLT is a surface-mount current sense transformer manufactured by Pulse Electronics, designed for invasive AC current measurement applications. It features a 1:20 turns ratio and supports primary currents up to 20 A. The component operates within a frequency range of 50 kHz to 1 MHz, with a maximum inductance of 80 µH. Electrical characteristics include a primary DC resistance of 0.75 mΩ and a secondary DC resistance of 550 mΩ maximum. The device is qualified under AEC-Q200 standards, ensuring reliability for automotive environments, and functions within an operating temperature range of -40°C to +125°C.

Current Sense Transformers Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• Invasive current sensing design for accurate AC measurement
• Surface mount package optimized for automated assembly

Current Sense Transformers Applications

• Automotive battery management systems
• On-board charger (OBC) current monitoring
• DC-DC converter output current sensing

Current Sense Transformers Procurement Notes

Verify the specific suffix 'QNLT' to confirm AEC-Q200 qualification and tape-and-reel packaging. Ensure the 1:20 turns ratio matches the system's signal conditioning requirements. Confirm that the 20 A primary rating aligns with peak load conditions. Check RoHS3 compliance status if required by regional regulations. Validate footprint dimensions against the PCB layout before finalizing procurement.

Current Sense Transformers Selection Notes

Select this component when invasive sensing is acceptable and high-frequency accuracy is critical. The 1:20 ratio provides a higher secondary voltage than lower-ratio alternatives, aiding signal detection. Consider the 80 µH inductance limit for low-frequency response constraints. The wide temperature range supports harsh automotive thermal cycles. Ensure the PCB space accommodates the 7.21 mm x 8.38 mm footprint.

Current Sense Transformers Part Context

This part belongs to the PA1005.XXXNL series of current sense transformers from Pulse Electronics. The series offers various turns ratios to suit different current levels while maintaining a consistent physical footprint. These components are engineered for compact power electronics designs requiring precise current feedback without introducing significant insertion loss.

Current Sense Transformers Replacement Considerations

PA1005.100NLT shares the same footprint but has a 1:100 ratio and 2 mH inductance, altering signal scaling. PA1005.020QNL is the cut-tape version of the same electrical specification. Verify that any substitute maintains AEC-Q200 qualification if automotive use is intended.