A170RPB

Overview

The Powerex Inc. A170RPB is a general-purpose silicon rectifier diode housed in the DO-205AA (DO-8) package, designed for chassis or stud mounting. It features a maximum repetitive peak reverse voltage of 1200 V and an average forward rectified current rating of 100 A. The device exhibits a maximum forward voltage drop of 1.3 V at its rated current. Operating within a junction temperature range of -40°C to +200°C, it utilizes standard recovery technology with a reverse recovery time exceeding 500 ns. The component is RoHS compliant and classified under EAR99 export controls.

Feature Summary

• High voltage blocking capability up to 1200 V for robust reverse protection
• High current handling capacity of 100 A average forward rectified current
• Extended thermal operating range supporting junction temperatures up to 200°C
• Durable DO-205AA (DO-8) package optimized for chassis or stud mounting applications

Applications

• Industrial power supply rectification circuits
• Motor drive and control system output stages
• Welding equipment power conversion modules
• Uninterruptible power supply (UPS) input rectifiers

Procurement Notes

Verify the specific suffix against official Powerex documentation to confirm voltage ratings, as variations exist within the A170 family. Confirm mechanical compatibility with existing heatsink mounting holes due to the DO-205AA footprint. Ensure thermal management solutions support the high junction temperature capabilities specified in the datasheet. Validate that the application environment does not exceed the maximum reverse voltage limits under transient conditions.

Selection Notes

Select this component when high voltage isolation and substantial current carrying capacity are required in a single-chip solution. The DO-205AA package facilitates direct mounting to cold plates or chassis structures for efficient heat dissipation. Consider the standard recovery characteristics suitable for lower frequency switching applications rather than high-frequency converters. Evaluate thermal resistance requirements based on the ambient operating conditions and duty cycle of the intended circuit design.

Part Context

The A170RPB belongs to the A170 series of discrete rectifiers manufactured by Powerex Inc., a subsidiary of Semikron Danfoss. This series is engineered for industrial-grade reliability and durability in demanding power electronics environments. The components utilize advanced silicon planar technology to ensure stable performance across wide temperature ranges. The series offers various voltage ratings to accommodate different system insulation requirements while maintaining consistent current handling capabilities.

Replacement Considerations

Cross-reference with other manufacturers offering DO-205AA packaged rectifiers with equivalent 1200 V and 100 A ratings. Verify pinout compatibility and mounting hole dimensions before substitution. Ensure the replacement device meets or exceeds the original forward voltage drop and reverse leakage specifications. Check for any differences in thermal resistance characteristics that might impact the existing cooling system design.