1N3903

Single Diodes Overview

The Microchip Technology 1N3903 is a high-reliability fast recovery rectifier diode designed for demanding applications. It features a silicon construction with a maximum average forward current rating of 50 amps and supports repetitive peak reverse voltages ranging from 50 to 400 volts. The device is qualified per MIL-PRF-19500/308 standards, ensuring robust performance in harsh environments. It operates with a junction temperature capability of up to 150°C, providing thermal stability during continuous operation.

Single Diodes Feature Summary

• Qualified for high reliability under MIL-PRF-19500/308 specifications
• Fast recovery rectification characteristics suitable for high-speed switching
• Capable of handling high junction temperatures up to 150°C

Single Diodes Applications

• High-reliability power supply circuits
• Military and aerospace electronic systems
• Industrial equipment requiring robust rectification

Single Diodes Procurement Notes

Verify the specific voltage sub-grade (50V to 400V) required for the application, as this parameter varies within the part number family. Confirm that the procurement source provides documentation verifying compliance with MIL-PRF-19500/308 standards. Ensure the component is sourced from authorized channels to guarantee authenticity and traceability for critical deployments.

Single Diodes Selection Notes

Select this component when military-grade reliability and fast recovery performance are mandatory. Consider the 50A current rating and 150°C thermal limit against the system's peak load requirements. Evaluate the available voltage ratings to ensure adequate margin for reverse blocking conditions in the target circuit design.

Single Diodes Part Context

The 1N3903 belongs to a series of high-reliability fast recovery rectifiers manufactured by Microchip Technology. This series includes variants such as the 1N3909, 1N3910, and 1N3912, which share similar qualification standards but differ in voltage and current specifications. These components are engineered for sectors where standard commercial parts do not meet stringent environmental or longevity requirements.

Single Diodes Replacement Considerations

Direct substitutes include other MIL-PRF-19500/308 qualified fast recovery rectifiers from Microchip, such as the 1N3913. Verify that any replacement matches the specific voltage rating and current capacity of the original design to maintain system integrity.