1N6642UB

Overview

The Microchip Technology 1N6642UB is a small signal switching diode designed for surface mount applications. It features a peak reverse voltage of 75 V and an average forward current of 300 mA. The device exhibits a fast recovery time of 5 ns with a maximum forward voltage of 1.2 V at specified currents. Reverse leakage current is limited to 25 nA, and the component supports a wide operating temperature range from -65°C to +175°C. It utilizes a three-pin ceramic package configuration suitable for high-reliability environments.

Feature Summary

• Hermetically sealed construction using internal metallurgical bonded design for enhanced durability
• Fast switching capability optimized for high-speed digital and computer peripheral circuits
• Military qualification compliant with MIL-PRF-19500/578 standards

Applications

• High-speed computer logic circuits
• Peripheral equipment interface protection
• Magnetic core memory decoding and encoding systems

Procurement Notes

Verify that the specific suffix 'UB' corresponds to the required surface mount ceramic package variant rather than through-hole equivalents. Confirm military qualification requirements align with JAN or JANS prefixes if higher reliability grades are necessary. Ensure compatibility with existing footprint designs for three-pin SMT assemblies before finalizing procurement orders.

Selection Notes

Select this component when hermetic sealing and fast switching speeds are critical for system performance. The 75 V rating suits low-voltage signal processing tasks. Consider alternative packages if surface mount technology is not feasible for the target assembly process. Validate thermal management capabilities within the specified -65°C to +175°C operational envelope.

Part Context

This part belongs to the JEDEC registered 1N66xx series of voidless hermetically sealed switching diodes manufactured by Microchip Technology. The series includes variants like 1N6638 and 1N6643, sharing similar electrical characteristics but differing in packaging and specific qualification levels. These components are engineered for demanding aerospace and defense applications requiring long-term stability.

Replacement Considerations

Direct substitutes include other qualified versions within the same family such as JAN1N6642UB or JANS1N6642UB, provided they match the exact package and pinout specifications. Verify cross-reference data sheets to ensure identical electrical parameters and mechanical dimensions before implementation.