PA1005.125QNL

Current Sense Transformers Overview

The PA1005.125QNL is a surface-mount current sense transformer from Pulse Electronics, designed for high-frequency applications. It features a 1:125 turns ratio and supports a maximum primary current 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 mΩ, a secondary DC resistance of 6.5 Ω, and an inductance of 3 mH. It is qualified under the AEC-Q200 standard and functions at temperatures up to +125°C.

Current Sense Transformers Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Surface mount package with gull-wing termination style
• High-frequency operation capability up to 1 MHz
• Low primary side DC resistance for minimal power loss

Current Sense Transformers Applications

• Automotive battery management systems
• High-frequency power supply current monitoring
• Inverter and converter circuit protection
• Electric vehicle charging infrastructure

Current Sense Transformers Procurement Notes

Verify that the specific part number suffix QNL corresponds to the AEC-Q200 qualification level required for your application. Confirm that the surface mount footprint dimensions match your PCB layout constraints. Ensure the operating temperature range meets the thermal requirements of the final assembly environment. Check for any recent Product Change Notifications regarding manufacturing location or material composition updates.

Current Sense Transformers Selection Notes

Select this component when a 1:125 transformation ratio is necessary for accurate current sensing in high-frequency circuits. Consider the 20 A maximum current rating to ensure safe operation under peak load conditions. Evaluate the 3 mH inductance value against the system's switching frequency to prevent saturation. Verify compatibility with automated pick-and-place equipment due to the SMD package type.

Current Sense Transformers Part Context

This component belongs to the PA1005 series of SMT current sense transformers from Pulse Electronics. The series offers various turns ratios and current ratings tailored for different power electronics applications. The QNL suffix indicates automotive-grade qualification, distinguishing it from commercial variants like the NL suffix. These transformers are engineered for compact designs requiring precise current feedback.

Current Sense Transformers Replacement Considerations

The PA1005.125NL is a non-automotive grade equivalent within the same series. Verify if AEC-Q200 certification is mandatory before substituting. Other parts in the PA1005 series may offer different turns ratios but share similar physical footprints.