1N6621US

Overview

The Microchip Technology 1N6621US is a single ultra-fast recovery glass rectifier diode designed for surface-mount applications. It features a maximum repetitive peak reverse voltage of 440 V and an average forward rectified current rating of 1.2 A. The device exhibits a fast recovery time of 30 ns with a peak reverse recovery current of 500 nA at the rated voltage. Forward voltage drop is specified at 1.4 V when conducting 1.2 A. The component operates within a junction temperature range of -65°C to +150°C and utilizes an SQ-MELF, A package.

Feature Summary

• Ultra-fast recovery characteristics suitable for high-frequency switching applications
• Hermetically sealed glass construction ensuring environmental stability
• High-temperature operation capability up to 150°C junction temperature

Applications

• Military-grade power supply circuits requiring high reliability
• High-speed DC-DC converter output rectification
• Free-wheeling diodes in inductive load switching applications

Procurement Notes

Verify that the specific order includes the US suffix to confirm the SQ-MELF surface-mount package variant. Confirm compliance requirements as the component does not meet RoHS standards. Ensure procurement channels provide traceability documentation consistent with military qualification standards. Validate that the supplier sources directly from authorized Microchip distribution networks to guarantee authenticity.

Selection Notes

Select this component when circuit designs demand rapid reverse recovery times below 50 nanoseconds combined with moderate current handling capabilities. The 440 V blocking voltage makes it appropriate for medium-voltage isolation tasks. Consider the hermetic seal requirement if the operating environment involves harsh conditions or strict reliability mandates where standard plastic packages are unsuitable.

Part Context

This part belongs to the 1N662xUS series of voidless-hermetically sealed surface mount ultra-fast recovery glass rectifiers. The series covers working peak reverse voltages ranging from 200 to 1000 volts with current ratings between 1.5 and 2.0 amps. These devices are qualified to MIL-PRF-19500/585 standards, targeting applications where failure is not an option.

Replacement Considerations

JANTXV1N6621US serves as a parameter-equivalent alternative within the same manufacturer portfolio.