1N5993B

Single Zener Diodes Overview

The 1N5993B is a single silicon Zener diode housed in a DO-35 (DO-204AH) glass axial-leaded package. It provides a nominal Zener voltage of 5.1 V with a tolerance of 5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 2 µA, a Zener impedance of 50 Ω at a test current of 5 mA, and a forward voltage of 1.1 V. The component features an isolated case connection and is designed for through-hole mounting.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single silicon junction structure
• Encapsulated in hermetically sealed glass DO-35 axial leaded package
• Capable of operation across extended industrial temperature ranges

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for signal lines

Single Zener Diodes Procurement Notes

Verify the manufacturer origin carefully, as the 1N5993B designation is utilized by multiple suppliers including Microchip Technology, Fairchild Semiconductor, and Central Semiconductor. Confirm specific suffixes such as TR for reel packaging or PBFREE for lead-free compliance against your bill of materials. Ensure the selected variant matches the required RoHS status and screening level for your production environment.

Single Zener Diodes Selection Notes

Select this component when a 5.1 V regulation point is required in a compact axial form factor. The 500 mW power rating suits low-current applications where higher power devices are unnecessary. Consider the 5% voltage tolerance for general-purpose regulation tasks. Verify that the DO-35 package dimensions fit the available board space and that the operating temperature range meets the environmental constraints of the final assembly.

Single Zener Diodes Part Context

The 1N5993B belongs to the standard 1N5985 through 1N6031 series of 0.5 W Zener voltage regulators. This family offers a wide selection of voltages from 2.4 V to 200 V in standard 5% or 10% tolerances. These components are widely recognized industry standards for basic voltage regulation needs in discrete semiconductor applications.

Single Zener Diodes Replacement Considerations

Cross-reference part numbers such as MX1N5993B-1E3 for hermetic or RoHS-compliant variants from Microsemi/Microchip. Other manufacturers like Fairchild and Central Semiconductor produce equivalent 1N5993B parts with identical electrical specifications but may differ in packaging suffixes or screening levels.