1N5418US

Overview

The Microchip Technology 1N5418US is a fast recovery rectifier diode designed for high-reliability applications. It features a 3A average rectified current and a 400V maximum repetitive peak reverse voltage. The device utilizes voidless hermetically sealed glass construction with metallurgically bonded terminals to ensure durability in harsh environments. Key electrical characteristics include a 150ns maximum reverse recovery time, a 1.5V forward voltage at 9A, and a non-repetitive peak surge current of 80A. It operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Hermetically sealed voidless-glass construction for enhanced environmental resistance
• Military qualification per MIL-PRF-19500/411 standards
• Fast recovery performance suitable for high-frequency switching
• Metallurgically bonded internal connections for structural integrity

Applications

• High-reliability aerospace power systems
• Military aircraft electronic circuits
• Spacecraft power management modules
• Harsh environment industrial rectification

Procurement Notes

Verify the specific suffix US indicates the hermetic glass package variant. Confirm MIL-PRF-19500/411 compliance documentation is included. Check for lead-free status as standard military versions may not be RoHS compliant. Ensure the supplier provides traceability records required for defense or space contracts. Validate the manufacturer source against authorized Microchip distributors.

Selection Notes

Select this component when hermetic sealing and military-grade reliability are mandatory. Compare the 3A current rating against circuit requirements to prevent overload. Consider the 400V reverse voltage margin for transient protection needs. Evaluate the 150ns recovery time against switching frequency constraints. Verify thermal management capabilities for the specified operating temperature range.

Part Context

This part belongs to the 1N5415 through 1N5420 series of fast recovery rectifiers. These components share identical physical packages and general specifications, differing primarily in their reverse voltage ratings. The series is widely recognized for use in critical infrastructure where failure is not an option. Microchip Technology maintains production standards consistent with legacy military specifications.

Replacement Considerations

Direct substitutes include JANTX1N5418US and JANS1N5418US from Microchip, which offer equivalent military qualifications. Other manufacturers producing MIL-PRF-19500/411 qualified 1N5418 variants may serve as alternatives if pin compatibility and electrical parameters match exactly.