A390B

Overview

The Powerex Inc. A390B is a silicon rectifier diode rated for 400 amperes average forward current and 1600 volts DC reverse voltage. It utilizes the R62 DO-200AA package with clamp mounting. The device features standard recovery characteristics, a maximum forward voltage of 1.7 V at 800 A, and a reverse leakage current of 50 mA at 2200 V.

Feature Summary

• High voltage blocking capability up to 1600 V
• Robust rugged glazed ceramic hermetic package
• Soft reverse recovery characteristics

Applications

• Industrial power conversion systems
• High voltage rectification circuits
• Heavy-duty industrial equipment power supplies

Procurement Notes

Verify the specific suffix 'B' against official manufacturer documentation to confirm exact electrical tolerances and pinout configurations. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee component authenticity and traceability for critical high-power applications.

Selection Notes

Select this component when designing circuits requiring high average current handling and significant reverse voltage withstand capabilities. The clamp mount style necessitates compatible mechanical hardware. Verify thermal management requirements align with the device's operating temperature range and junction specifications.

Part Context

This part belongs to the Powerex A390 series of high-current silicon rectifiers. The series is characterized by rugged construction suitable for demanding industrial environments. The A390B variant specifically denotes the 1600V rating within this product line, sharing the common 400A current capacity and R62 package form factor.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer cross-reference guides for equivalent components.