1N5279BDO35TR

Single Zener Diodes Overview

The Microsemi Corporation 1N5279BDO35TR is a Zener diode with a nominal voltage of 180 V and a tolerance of ±5%. It operates within a power dissipation range of 0.48 W to 0.5 W, depending on the mounting configuration. The device features a maximum reverse current of 0.1 µA at 137 V and a test current of 0.68 mA. Its zener impedance is specified as 6000 Ohms at 0.25 mA. The component utilizes a DO-35 glass axial-lead package and supports tape-and-reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance characteristics suitable for high-frequency applications
• Inherently radiation hard per MicroNote 050 specifications
• Flexible axial-lead mounting terminals allow versatile integration

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Overvoltage protection systems
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the part number suffix TR corresponds to the tape-and-reel option per EIA-296 standards. Confirm the B suffix indicates the standard 5% voltage tolerance. Ensure the manufacturer is identified as Microsemi Corporation or its successor entity. Cross-reference the JEDEC registration type to validate electrical parameters against official datasheets before procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 180 V reference is required with tight manufacturing tolerances. The DO-35 package offers robust mechanical stability for through-hole mounting. Consider the thermal resistance values if operating near the maximum power dissipation limits. Verify compatibility with existing circuit layouts due to the specific lead length requirements for accurate thermal testing.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series provides a wide selection of voltages from 2.4 to 200 volts. These components are JEDEC registered and available in various screening levels. The DO-35 glass axial-lead package is a standard form factor for these regulators.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5279B variants. Verify pinout and package dimensions match the DO-35 specification. Ensure replacement devices meet the same 180 V nominal voltage and ±5% tolerance requirements.