1N5418

Overview

The Microchip Technology 1N5418 is a silicon rectifier diode designed for high-reliability applications. It features a maximum DC reverse voltage (Vr) of 400 V and an average rectified forward current (Io) of 3 A. The device exhibits a typical reverse recovery time (trr) of 150 ns, classifying it as a fast recovery rectifier with speeds less than or equal to 500 ns. Forward voltage (Vf) is specified at 1.5 V when tested at 9 A. Reverse leakage current is limited to 1 µA at the maximum rated voltage of 400 V. The component operates within a junction temperature range of -65°C to 175°C and utilizes a B axial package.

Feature Summary

• Hermetically sealed voidless-glass construction ensures durability in demanding environments.
• Military qualification per MIL-PRF-19500/411 supports critical mission-critical systems.
• Fast recovery characteristics enable efficient performance in high-frequency switching circuits.

Applications

• High-reliability power supply rectification
• Inverter circuits requiring robust reverse blocking
• Polarity protection in sensitive electronic assemblies

Procurement Notes

Verify that the specific order suffix matches the required military grade and package style, as variations exist between standard commercial and qualified versions. Confirm RoHS compliance status if environmental regulations apply, noting that some military variants may not meet standard restrictions. Validate the manufacturer's lot traceability and certification documents upon receipt to ensure adherence to MIL-PRF-19500/411 standards for your specific application requirements.

Selection Notes

Select this component when a hermetically sealed, military-grade rectifier is necessary for systems where failure is not an option. The 400 V rating and 3 A current capacity suit moderate-power industrial applications. Consider the 150 ns recovery time for frequencies exceeding standard general-purpose diodes but below ultra-fast specifications. Ensure the through-hole B axial package fits the available PCB layout constraints.

Part Context

This part belongs to the 1N5415 through 1N5420 series of fast recovery glass rectifiers. These devices share identical physical dimensions and electrical structures, differing primarily in their peak reverse voltage ratings which range from 50 V to 600 V. The 1N5418 specifically targets the 400 V segment of this industry-standard lineup, providing a balance of voltage handling and current capability for general purpose rectification tasks.

Replacement Considerations

JANTX1N5418

FAQ

Is the 1N5418 hermetically sealed?

Yes, the device features voidless-glass construction that provides hermetic sealing.

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175°C.