1N2990A

Overview

The Microchip Technology 1N2990A is a standard recovery rectifier designed for stud-mount applications. It features a maximum repetitive peak reverse voltage of 50 V and a continuous forward current rating of 150 A. The device utilizes a DO-205AA-2 package configuration. Key electrical specifications include a maximum non-repetitive peak surge current of 2.5 kA at 8.3 ms single half-sine-wave impulse, a maximum DC forward voltage drop of 1.1 V at rated current, and a maximum RMS isolation voltage of 4000 V. The component operates within a junction temperature range from -65 °C to +200 °C.

Feature Summary

• High thermal stability with a maximum operating junction temperature of 200 °C
• Robust surge handling capability supporting high transient current loads
• Standard recovery characteristics optimized for general-purpose rectification

Applications

• Industrial power supply rectification circuits
• Battery charging systems requiring high current capacity
• DC motor drive protection stages

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact electrical tolerances and testing criteria. Confirm RoHS compliance status as it varies by manufacturing batch. Ensure the procurement channel provides valid traceability records for the DO-205AA-2 package type. Validate that the supplier can provide the complete datasheet including mechanical drawing dimensions for proper heatsink integration.

Selection Notes

Select this component when designing circuits requiring high current handling in a compact stud-mount form factor. Consider the 1.1 V forward voltage drop for thermal management calculations under full load conditions. Evaluate the 2.5 kA surge rating against potential inrush currents in the target application. Ensure the mounting surface preparation meets the requirements for reliable thermal contact and electrical isolation.

Part Context

This part belongs to the Microchip standard rectifier family, specifically engineered for high-current industrial applications. It serves as a discrete semiconductor solution for converting AC to DC in power electronics. The DO-205AA-2 package allows for direct mounting to chassis or heatsinks, facilitating efficient heat dissipation compared to leaded alternatives.

Replacement Considerations

Consult official cross-reference guides for equivalent parts offering identical 150 A current ratings and stud-mount configurations. Verify that any substitute maintains the same 200 °C junction temperature limit and DO-205AA-2 mechanical footprint. Ensure replacement devices meet the same 50 V reverse voltage specification.