IRKD91/04A

Diode Arrays Overview

The Vishay IRKD91/04A is a standard silicon rectifier diode module in the IRK.91 series, housed in an ADD-A-Pak GEN V package compatible with TO-240AA footprints. It features a dual-series configuration with a maximum repetitive peak reverse voltage of 400 V and a maximum average forward current of 100 A at a case temperature of 100 °C. The device supports a maximum RMS forward current of 157 A and offers high surge capability with a non-repetitive peak forward current of 2020 A at 50 Hz. Operating junction temperatures range from -40 °C to 150 °C.

Diode Arrays Feature Summary

• Utilizes Direct Bonded Copper (DBC) substrate for superior thermal performance and mechanical ruggedness.
• Features a solid copper baseplate that facilitates easier mounting on heatsinks with increased tolerance for surface roughness.
• Incorporates a click-stop feature to secure electrical terminals against axial pull-out.
• Manufactured without hard molding to eliminate direct stress on the leads.

Diode Arrays Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature control circuits
• Motor speed control circuits
• UPS systems and battery chargers

Diode Arrays Procurement Notes

Verify the specific suffix 'D' confirms the dual-series circuit configuration and '04' indicates the 400 V rating. Confirm the 'A' suffix denotes Generation V packaging. Ensure compatibility with TO-240AA mounting standards. Check for required optional hardware separately as per Bulletin I27900. Validate industrial level qualification requirements for the target application environment.

Diode Arrays Selection Notes

Select this component for general purpose high voltage applications requiring robust thermal management. The dual-series configuration allows for higher voltage blocking capabilities within a single module. Consider the 0.35 K/W junction-to-case thermal resistance for heat sink design. Ensure the operating case temperature remains within limits to maintain the 100 A current rating. Verify isolation voltage requirements against the 3500 VRMS specification.

Diode Arrays Part Context

The IRK.91 series represents a family of high-voltage power modules designed for industrial applications. The ADD-A-Pak GEN V package combines excellent thermal conductivity with mechanical durability. This series includes various configurations such as single diodes, dual series, common anode, and common cathode setups. The modules are UL recognized and intended for demanding environments requiring reliable rectification.

Diode Arrays Replacement Considerations

Direct replacements must match the 400 VRRM, 100 AIF(AV), and dual-series configuration. Compatible packages include TO-240AA form factors. Verify thermal resistance and mounting torque specifications (5 Nm ±10%) for equivalent performance. Consult manufacturer cross-reference lists for updated generation equivalents.