1N3649

Single Diodes Overview

The Microchip Technology 1N3649 is a high-reliability power rectifier qualified per MIL-PRF-19500/260. It features a glass passivated die and glass-to-metal seal construction in a DO-203AA (DO-4) stud mount package. The device supports a peak repetitive reverse voltage of 800 V, an average forward current of 3.3 A at 150°C case temperature, and a peak surge forward current of 25 A. It operates within a case temperature range of -65°C to 150°C.

Single Diodes Feature Summary

• Glass passivated die with glass-to-metal seal construction for enhanced durability
• Qualified per MIL-PRF-19500/260 for high reliability applications
• Stud mount configuration suitable for high-power thermal management

Single Diodes Applications

• High-reliability industrial power supplies
• Military and aerospace rectification circuits
• Heavy-duty DC power conversion systems

Single Diodes Procurement Notes

Verify the specific revision level against the manufacturer's datasheet T4-LDS-0135 Rev. 1 before procurement. Confirm that the DO-203AA package dimensions align with your mechanical assembly constraints. Ensure thermal interface materials are compatible with the stud mount design for optimal heat dissipation during operation.

Single Diodes Selection Notes

Select this component when MIL-PRF-19500/260 qualification is mandatory for the application. The 800 V rating distinguishes it from lower-voltage variants like the 1N1124A or 1N1126A. Consider the 3.3 A continuous current limit and 25 A surge capability when designing for load transients and thermal conditions.

Single Diodes Part Context

This part belongs to a family of high-reliability power rectifiers including the 1N1124A, 1N1126A, and 1N3650. These devices share similar physical constructions and electrical characteristics but differ primarily in their peak repetitive reverse voltage ratings. The 1N3649 specifically addresses applications requiring 800 V blocking capability.

Single Diodes Replacement Considerations

Direct equivalents include the 1N1128A and 1N3649R. Verify pinout orientation as reversed units may carry an 'R' suffix. Ensure substitute parts meet the same MIL-PRF-19500/260 standards if military-grade reliability is required.