IRKD91/14A

Diode Arrays Overview

The IRKD91/14A is a high-voltage power rectifier module from the Vishay IRK.91 series, housed in an ADD-A-PAK GEN V package with a TO-240AA footprint. It features a dual-series diode configuration and supports a maximum repetitive peak reverse voltage of 1400 V. The device delivers a maximum average forward current of 100 A at a case temperature of 100 °C and handles non-repetitive surge currents up to 2110 A at 60 Hz. Operating within a junction temperature range of -40 °C to 150 °C, it utilizes a thick copper baseplate for enhanced thermal spreading and mechanical ruggedness.

Diode Arrays Feature Summary

• Features a solid copper baseplate integrated into the Direct Bonded Copper substrate to improve thermal spread and mounting tolerance on heatsinks.
• Includes a click-stop terminal fixation system designed to secure electrical terminals against axial pull-out forces.
• Manufactured without hard molding to eliminate direct mechanical stress on the leads during operation.

Diode Arrays Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature control circuits
• Motor speed control circuits
• Uninterruptible Power Supply (UPS) systems

Diode Arrays Procurement Notes

Verify the specific voltage code suffix matches the required 1400 V rating, as the IRK.91 series spans multiple voltage options. Confirm the 'D' circuit configuration corresponds to the intended dual-series application. Ensure the Gen V designation aligns with the desired mechanical specifications, particularly regarding the copper baseplate construction. Cross-reference the datasheet Bulletin I27141 for complete thermal and mechanical dimensions before finalizing procurement.

Diode Arrays Selection Notes

Select this component for general-purpose high-voltage applications requiring robust industrial-grade reliability. The 1400 V rating suits demanding environments where standard lower-voltage modules would fail. Consider the 0.35 K/W junction-to-case thermal resistance when designing the cooling solution. The standardized TO-240AA outline facilitates easy integration into existing heatsink infrastructure commonly used in industrial power electronics.

Diode Arrays Part Context

This part belongs to the IRK.91 series of power rectifier modules manufactured by Vishay General Semiconductor. The series offers various voltage ratings from 400 V to 1600 V and different circuit configurations including single diodes, common cathode, common anode, and series connections. The ADD-A-PAK GEN V packaging provides a standardized interface for high-current industrial applications.

Diode Arrays Replacement Considerations

Direct substitutes include other IRK.91 series variants with matching voltage codes, such as IRKD91/16A for higher voltage requirements or IRKD91/12A for lower voltage needs. Verify that any replacement maintains the same dual-series configuration and physical footprint compatibility with existing mounting hardware.