MDA72-08N1B

Overview

The IXYS MDA72-08N1B is a dual diode module in the TO-240AA package. It features a maximum repetitive reverse voltage of 800 V and a forward current rating of 99 A at a case temperature of 100°C, or 113 A at 92°C. The peak forward surge current reaches 1950 A for an 8.3 ms duration. Operating junction temperatures range from -40°C to +150°C. Key electrical parameters include a forward voltage of 1.6 V at 300 A and a thermal resistance (junction-to-case) of 0.35 K/W per diode under DC conditions.

Feature Summary

• Utilizes direct copper bonded Al2O3-ceramic base plate construction
• Features planar passivated chips for enhanced reliability
• Provides high isolation voltage capability up to 3600 V~

Applications

• Supplies for DC power equipment
• DC supply for PWM inverters
• Field supply for DC motors
• Battery DC power supplies

Procurement Notes

Verify that the specific part number matches the required voltage class, as the MDA72 series includes variants with different blocking voltages. Confirm mounting torque specifications align with the application hardware requirements. Ensure compliance with RoHS directives if applicable to the project constraints before finalizing procurement orders.

Selection Notes

Select this component based on the 800V reverse voltage requirement and the 99A continuous current capacity at elevated case temperatures. Evaluate the thermal management strategy using the provided transient thermal impedance data. Consider the TO-240AA package dimensions for mechanical integration within the target system enclosure.

Part Context

This device belongs to the MDA72 series of discrete semiconductor modules manufactured by IXYS. The series utilizes silicon technology and is designed for high-power applications requiring robust performance in demanding electrical environments. The module integrates two diodes into a single screw-mountable unit.

Replacement Considerations

Cross-reference with other MDA72 series variants such as MDA72-12N1B or MDA72-14N1B if higher voltage ratings are needed. Verify pinout compatibility and thermal characteristics when substituting with similar TO-240AA packages from other manufacturers.

FAQ

What is the maximum surge current rating?

The module supports a peak forward surge current of 1950 A for an 8.3 ms sine wave duration at an initial junction temperature of 45°C.

How is the isolation voltage defined?

The isolation voltage is rated at 3000 V~ RMS for one minute at 50/60 Hz, with a leakage current limit of 1 mA allowing up to 3600 V~ for one second.