ACURN101-HF

Overview

The ACURN101-HF is an SMD ultra-fast recovery rectifier manufactured by Comchip Technology, designed for automotive applications under AEC-Q101 standards. It features a maximum DC reverse voltage (Vr) of 100V and an average forward current (Io) of 1A. The device exhibits a fast recovery speed with a reverse recovery time (trr) of 25ns and low reverse leakage current of 2µA at 100V. Packaged in a compact surface-mount format, it utilizes laser cathode band marking for polarity identification.

Feature Summary

• Ultra-fast recovery performance suitable for high-frequency switching
• Automotive-grade reliability compliant with AEC-Q101 qualification
• Low reverse leakage current for improved efficiency
• Glass passivated chip construction for enhanced stability

Applications

• Automotive power supply circuits
• High-speed switching rectification
• DC-DC converter output stages

Procurement Notes

Verify the specific suffix 'HF' indicates halogen-free compliance as per manufacturer documentation. Confirm the package type matches the required PCB footprint, typically associated with the ACU series SMD form factor. Ensure the voltage rating of 100V aligns with the circuit's peak inverse voltage requirements to prevent breakdown during operation.

Selection Notes

Select this component when ultra-fast recovery characteristics are critical for minimizing switching losses in automotive environments. The 1A current rating suits moderate power applications, while the 100V blocking voltage provides adequate margin for standard automotive electrical systems. Consider thermal management capabilities inherent to the SMD package for continuous duty cycles.

Part Context

This part belongs to the ACU series of SMD ultra-fast recovery rectifiers from Comchip Technology. The series is engineered specifically for automotive electronics, offering robust performance under varying temperature conditions. The ACURN101-HF variant represents a specific voltage and current configuration within this family, balancing speed and power handling for general-purpose rectification tasks.

Replacement Considerations

Cross-reference with other AEC-Q101 qualified ultra-fast diodes from manufacturers like Vishay or Diodes Inc. Ensure substitute parts match the 25ns trr specification and 1A/100V ratings. Verify package compatibility and pinout alignment before integration into existing designs.