PA1005.040QNL

Current Sense Transformers Overview

The PA1005.040QNL is a surface-mount current sense transformer from Pulse Electronics, designed for board mounting in automotive and industrial applications. It features a 1:40 turns ratio and supports a primary current rating of 20 A. The device operates within a frequency range of 50 kHz to 1 MHz. Key electrical parameters include a primary DC resistance of 0.75 mOhms, a secondary DC resistance of 1.14 Ohms, and an inductance of 320 µH. It is rated for 900 Vrms isolation and complies with the AEC-Q200 qualification standard.

Current Sense Transformers Feature Summary

• Provides precise current sensing through a fixed 1:40 transformation ratio
• Engineered for high-frequency operation between 50 kHz and 1 MHz
• Complies with AEC-Q200 automotive reliability standards
• Features gull-wing surface mount termination for PCB integration

Current Sense Transformers Applications

• Automotive power management systems
• Current monitoring in electric vehicle charging infrastructure
• Industrial motor drive control circuits
• Battery management system (BMS) protection loops

Current Sense Transformers Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official Pulse Electronics documentation. Ensure the specific suffix QNL matches the required gull-wing termination style and AEC-Q200 compliance. Confirm that the operating temperature range meets the -40 C minimum requirement for your specific application environment before finalizing procurement.

Current Sense Transformers Selection Notes

Select this component when a compact solution is needed for high-current sensing up to 20 A in space-constrained designs. The 5.5 mm maximum height allows for low-profile board layouts. Consider the 320 µH inductance value for compatibility with switching frequencies above 50 kHz. Ensure the 900 Vrms isolation rating satisfies safety requirements between primary and secondary circuits.

Current Sense Transformers Part Context

This part belongs to the PA1005 SMT Current Sense Transformer Series, which offers solutions up to 20 A with a maximum height of 5.5 mm. It falls under the broader category of current transformers used for board-mounted applications. The series provides magnetic current sensing capabilities suitable for both general industrial and specialized automotive electronic control units requiring robust performance.

Current Sense Transformers Replacement Considerations

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