PA1005.020QNL

Current Sense Transformers Overview

The PA1005.020QNL is a surface mount current sense transformer manufactured by Pulse Electronics, designed for high-frequency applications. It features a 1:20 turns ratio and supports a primary current rating of 20 A. The device operates within a frequency range of 50 kHz to 1 MHz. Electrical characteristics include a primary DC resistance of 0.75 mOhm, a secondary DC resistance of 550 mOhm, and an inductance of 80 µH. It is qualified under the AEC-Q200 standard for automotive reliability. Physical dimensions are 8.38 mm in width, 7.21 mm in length, and 5.5 mm in height, with an operating temperature range from -40°C to +125°C.

Current Sense Transformers Feature Summary

• AEC-Q200 qualified for automotive electronic component reliability standards
• Surface mount design optimized for automated PCB assembly processes
• High-frequency operation capability up to 1 MHz for precise signal sensing

Current Sense Transformers Applications

• Automotive powertrain control unit current monitoring
• On-board charger (OBC) circuit protection systems
• DC-DC converter output current sensing

Current Sense Transformers Procurement Notes

Verify that the specific part number suffix matches the required turns ratio and qualification level. Confirm that the supplier provides traceability documentation supporting the AEC-Q200 automotive qualification status. Ensure the received components match the specified physical dimensions and pin configuration for the target footprint.

Current Sense Transformers Selection Notes

Select this component when a 1:20 transformation ratio is required for currents up to 20 A in automotive environments. Consider the 80 µH inductance value for filter design compatibility. Evaluate the 550 mOhm secondary resistance against the input impedance of the downstream sensing amplifier to ensure accurate signal transfer without excessive loading.

Current Sense Transformers Part Context

This component belongs to the PA1005QNL series of current sense transformers from Pulse Electronics. The series offers various turns ratios, such as 1:30 and 1:60, to accommodate different sensing requirements while maintaining consistent physical footprints and automotive qualification standards across the product line.

Current Sense Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.