1N5279

Single Zener Diodes Overview

The Microchip Technology 1N5279 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 180 V with a tight tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within an extended junction temperature range from -65°C to +175°C. Packaged in the DO-204AH (DO-35) axial through-hole format, it exhibits a maximum reverse leakage current of 100 nA at 130 V and a Zener impedance of 2200 Ohms.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with a nominal reference voltage of 180 V and a precision tolerance of ±5%.
• Engineered for high-temperature reliability with an operational junction temperature range extending up to +175°C.
• Constructed using silicon technology housed in a glass axial-lead DO-204AH package for robust mechanical performance.

Single Zener Diodes Applications

• Precision voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in sensitive electronic systems
• General-purpose voltage regulation in industrial control equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as variations such as 'B' denote the standard ±5% tolerance configuration. Confirm compliance requirements against project specifications, noting that certain variants may not be RoHS compliant. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability of the semiconductor components.

Single Zener Diodes Selection Notes

Select this component when a precise 180 V regulation point is required with minimal deviation. The ±5% tolerance makes it suitable for applications demanding higher accuracy than standard 10% parts. Consider the 500 mW power rating and thermal management needs for the intended operating environment. The axial leaded package facilitates easy integration into through-hole PCB layouts or breadboard prototyping setups.

Single Zener Diodes Part Context

This part belongs to the widely utilized 1N5221 through 1N5281 series of 0.5 W Zener voltage regulators. The series offers a broad selection of voltages ranging from 2.4 V to 200 V. The 1N5279 specifically addresses the need for high-voltage regulation within this lineup, serving as a standard industry solution for discrete voltage clamping and referencing tasks.

Single Zener Diodes Replacement Considerations

Compatible substitutes include the 1N5279B and 1N5279G, which share identical electrical characteristics but may differ in manufacturing origin or screening levels. Verify pinout compatibility and package dimensions before substitution to ensure seamless integration into existing hardware designs.