1N5280

Single Zener Diodes Overview

The Microchip Technology 1N5280 is a single silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 190 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to 175°C. It utilizes the DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a reverse leakage current of 100 nA at 144 V, an impedance of 2400 Ohms, and a forward voltage of 1.5 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single silicon planar structure
• Capable of operating in extended industrial temperature environments up to 175°C
• Utilizes a hermetically sealed glass axial package for durability

Single Zener Diodes Applications

• Voltage reference circuits requiring high-voltage stability
• Overvoltage protection stages in electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as variants such as 1N5280B/TR or 1N5280BUR exist with identical core specifications but different packaging formats like tape-and-reel or surface mount. Confirm RoHS compliance status and manufacturer lot traceability requirements prior to procurement to ensure alignment with project standards and regulatory constraints.

Single Zener Diodes Selection Notes

Select this component when a precise 190 V regulation point is required with tight ±5% tolerance. The DO-35 package suits designs needing robust axial leads for manual assembly or high-vibration environments. Ensure the circuit design accommodates the 500 mW power limit and that the 2400 Ohm impedance does not impact dynamic response requirements in the target application.

Single Zener Diodes Part Context

This part belongs to the standard 1N52xx series of Zener diodes manufactured by Microchip Technology. It is functionally equivalent to parts from other manufacturers under the same JEDEC numbering system. The device represents a legacy through-hole solution often used in replacement scenarios for older equipment or in designs prioritizing mechanical lead strength over miniaturization.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5280B and 1N5280BUR from Microchip/Microsemi. Cross-manufacturer equivalents are available under the same 1N5280 designation, provided they meet the 190 V, 500 mW, and ±5% tolerance specifications.