1N459

Single Diodes Overview

The Microchip Technology 1N459 is a JEDEC registered switching diode qualified per MIL-PRF-19500/193. It features a hermetically sealed double-plug DO-35 package with metallurgical bonding. The device supports a maximum average DC output current of 150 mA and a working peak reverse voltage of 175 V. Electrical characteristics include a forward voltage of 1.0 V at 100 mA, a reverse current of 25 nA at the working peak reverse voltage, and a junction temperature range from -65°C to +150°C.

Single Diodes Feature Summary

• Hermetically sealed glass construction with double-plug DO-35 package for high-density mounting
• Metallurgically bonded design ensuring structural integrity in fast switching applications
• Qualified to JAN reliability standards under MIL-PRF-19500/193 specification

Single Diodes Applications

• RS-232 and RS-422 interface networks
• Ethernet 10 Base T links
• Switching core drivers
• Local area networks
• Computers

Single Diodes Procurement Notes

Verify the specific revision level and qualification status required for your application, as the component is available in both commercial and JAN grades. Confirm RoHS compliance requirements, noting that compliant versions are restricted to commercial grade only. Ensure the ordering suffix matches the desired lead plating and reliability level specified in the manufacturer's part nomenclature guide.

Single Diodes Selection Notes

Select this component for circuits requiring small size and high-frequency data line performance. The 1N459 variant provides a 175 V working peak reverse voltage rating suitable for moderate voltage isolation needs. Consider the 150 mA average rectified current limit when designing power dissipation paths, and verify thermal derating requirements if operating near the maximum junction temperature.

Single Diodes Part Context

This device belongs to the 1N457A through 1N459A series of JEDEC registered switching/signal diodes. These components share common metallurgical bonding and hermetic sealing technologies but differ in their reverse voltage ratings. The series is designed for fast switching applications where low capacitance and rapid response times are critical for signal integrity.

Single Diodes Replacement Considerations

Direct replacements within the same series include the 1N457A and 1N458A, provided their lower reverse voltage ratings meet the circuit requirements. Verify that any substitute maintains the DO-35 package dimensions and JAN or commercial qualification levels to ensure mechanical and electrical compatibility.