1N4693 (DO35)

Overview

The Microsemi Corporation 1N4693 (DO35) is a single Zener diode housed in the DO-35 axial glass package. It features a nominal Zener voltage of 7.5V with a power dissipation rating of 500mW. The device operates within a temperature range of -65°C to +200°C and exhibits a maximum reverse current of 10uA at 5.7V. The Zener voltage tolerance spans from 7.125V to 7.875V, ensuring precise regulation for electronic circuits requiring stable reference voltages.

Feature Summary

• Provides stable voltage regulation using silicon Zener breakdown characteristics
• Utilizes hermetically sealed glass DO-35 package for environmental protection
• Supports high-temperature operation up to 200°C for demanding applications

Applications

• Voltage regulation in power supply circuits
• Reference clamping for signal conditioning
• Overvoltage protection in sensitive electronic components

Procurement Notes

Verify the specific ordering suffix to confirm compliance status, as variants such as -1E3 indicate RoHS compliance while standard versions may be non-RoHS. Confirm the manufacturer source, noting that Microsemi is now part of Microchip Technology. Ensure the package type matches the required DO-35 form factor for through-hole mounting before finalizing procurement orders.

Selection Notes

Select this component when a 7.5V Zener reference is required in a compact axial package. The 500mW power rating suits low-current regulation tasks. Consider the wide operating temperature range if the environment exceeds standard industrial limits. Verify that the 10uA leakage current meets the circuit's sensitivity requirements for precision applications.

Part Context

The 1N4693 belongs to the standard Zener diode series manufactured by Microsemi Corporation, now integrated into Microchip Technology. It is commonly available in the DO-35 glass axial package, designated as DO-204AH in some documentation. This component serves as a fundamental passive element for voltage stabilization in discrete and hybrid electronic designs.

Replacement Considerations

Direct substitutes include the 1N4693/TR variant and other manufacturers' equivalents like EIC Semiconductor's 1N4693. Ensure replacement parts match the 7.5V nominal voltage, 500mW power rating, and DO-35 package dimensions. Verify thermal performance and leakage current specifications to maintain circuit integrity.