VS-1N1187A

Single Diodes Overview

The VS-1N1187A is a silicon power rectifier diode from Vishay Semiconductors, part of the 1N1183 series. It features a maximum average forward current (IF(AV)) of 40 A and a maximum repetitive peak reverse voltage (VRRM) of 300 V. The device utilizes a DO-5 (DO-203AB) stud mount package with a case temperature range of -65 °C to +200 °C. Key electrical characteristics include a maximum peak forward voltage of 1.8 V at 110 A and a non-repetitive surge current capability of up to 800 A at 60 Hz.

Single Diodes Feature Summary

• Low leakage current design for efficient high-power rectification
• Robust surge current handling capability suitable for demanding loads
• High junction temperature rating enabling operation in extreme environments

Single Diodes Applications

• Industrial power supplies
• Battery chargers
• Welding equipment

Single Diodes Procurement Notes

Verify the specific suffix 'A' against the datasheet to confirm it denotes the 40 A variant within the 1N1183 series. Ensure mounting hardware specifications align with the required torque values for the DO-5 package. Confirm thermal interface material compatibility for optimal heat dissipation during operation.

Single Diodes Selection Notes

Select this component when a 300 V blocking voltage and 40 A continuous current are required in a stud-mount configuration. Consider the 1.8 V forward voltage drop for thermal management calculations. Evaluate the 800 A surge rating against potential inrush currents in the target circuit application.

Single Diodes Part Context

This diode belongs to the Vishay 1N1183 series, which includes variants rated for 35 A, 40 A, and 60 A. The series shares common mechanical dimensions and thermal characteristics but differs in current ratings and voltage options ranging from 50 V to 1000 V. The VS-1N1187A specifically addresses the 300 V / 40 A requirement within this lineup.

Single Diodes Replacement Considerations

Cross-reference with other manufacturers offering JEDEC registered 1N1187 equivalents. Verify that substitute parts match the 40 A current rating and 300 V voltage rating. Ensure the replacement maintains the DO-5 package style and similar thermal resistance values.