1N6631US

Overview

The Microchip Technology 1N6631US is a single-element silicon rectifier diode designed for high-reliability applications. It features a maximum repetitive peak reverse voltage of 1100 V and an average forward rectified current of 1.4 A. The device utilizes a surface-mount SQ-MELF, A package configuration. Key electrical characteristics include a maximum forward voltage of 1.4 V at the rated current and a low reverse leakage current of 4 µA at full reverse voltage. The junction temperature range spans from -65°C to +150°C.

Feature Summary

• Hermetically sealed voidless-glass construction ensuring environmental stability
• Internal metallurgical bond providing enhanced mechanical reliability
• Fast recovery performance suitable for high-efficiency switching circuits

Applications

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

Procurement Notes

Verify that the specific part number suffix matches the required screening level and package type. Confirm RoHS compliance status as military-grade variants may differ from commercial standards. Ensure the ordering documentation explicitly states the MIL-PRF-19500 qualification level to guarantee authenticity and traceability for critical deployments.

Selection Notes

Select this component when a surface-mount solution is required for high-voltage rectification in constrained spaces. The 1100 V rating provides significant headroom for transient spikes in industrial environments. Consider the thermal management requirements associated with the MELF package geometry during PCB layout design to maintain optimal junction temperatures.

Part Context

This device belongs to the industry-standard 1N66xx series of fast recovery rectifiers. It serves as the surface-mount equivalent to traditional axial leaded packages, facilitating automated assembly processes while maintaining the ruggedness expected in defense and space applications. The product line emphasizes long-term reliability under extreme thermal conditions.

Replacement Considerations

Direct substitutes must match the 1100 V reverse voltage, 1.4 A current rating, and SQ-MELF package dimensions. Verify that any alternative component meets the same hermetic sealing and metallurgical bond specifications required by the original system design constraints.