IRKD91/12A

Diode Arrays Overview

The IRKD91/12A is a high-voltage silicon rectifier diode module from the IRK.91 series, manufactured by Vishay General Semiconductor - Diodes Division. It features a dual-diode series configuration housed in an ADD-A-PAK GEN V (TO-240AA) package with three terminals. The device supports a maximum repetitive peak reverse voltage of 1200 V and a maximum average forward current of 100 A at a case temperature of 100 °C. Key electrical ratings include a non-repetitive peak surge current of 2110 A at 60 Hz and a junction operating temperature range of -40 °C to 150 °C.

Diode Arrays Feature Summary

• Features a thick copper baseplate and Direct Bonded Copper substrate for enhanced thermal performance and mechanical ruggedness.
• Provides 3500 VRMS isolating voltage between terminals and the grounded heatsink.
• Includes a click-stop feature to secure electrical terminals against axial pull-out.
• Manufactured without hard mold to eliminate direct stress on the leads.

Diode Arrays Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature and motor speed control circuits
• UPS systems
• Battery chargers

Diode Arrays Procurement Notes

Verify the specific ordering suffix 'D' confirms the dual-diode series circuit configuration as defined in the official datasheet. Confirm the voltage code '12' corresponds to the 1200 V rating. Ensure the 'A' suffix indicates Generation V packaging. Cross-reference the manufacturer part number with the distributor catalog to ensure compatibility with required mounting hardware and thermal interface materials.

Diode Arrays Selection Notes

Select this component for general-purpose high-voltage applications requiring robust thermal management. The TO-240AA form factor ensures full compatibility with standard heatsinks designed for industrial packages. Consider the 0.35 K/W junction-to-case thermal resistance when designing the cooling system. Verify that the application's peak surge currents remain within the specified IFSM limits for the target line frequency.

Diode Arrays Part Context

This module belongs to the IRK.91 series of power diodes, which are designed for industrial-level reliability. The series utilizes Generation V ADD-A-PAK technology, combining excellent thermal spreading capabilities with superior mechanical strength. The family offers various voltage codes ranging from 400 V to 1600 V and multiple circuit configurations including single, common cathode, common anode, and series connections.

Diode Arrays Replacement Considerations

IRKC91/12A (Common Cathode), IRKJ91/12A (Common Anode).

Diode Arrays FAQ

What does the letter 'D' signify in the part number IRKD91/12A?

The letter 'D' indicates a circuit configuration consisting of two diodes connected in series.

What is the maximum non-repetitive peak forward surge current for this module?

The maximum non-repetitive peak forward surge current is 2110 A at 60 Hz with no voltage reapplied.

How is the electrical terminal connection secured in this module?

The electrical terminals are secured against axial pull-out using a click-stop feature fixed to the module housing.