1N5273B

Single Zener Diodes Overview

The Microchip Technology 1N5273B is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 120 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 900 μA at 100 V. Electrical characteristics include a test current of 1.0 mA, a maximum Zener impedance of 4000 Ω at 0.25 mA, and a positive voltage temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features hermetically sealed glass axial-lead construction for durability
• Inherently radiation hard per MicroNote 050
• Minimal capacitance suitable for high-frequency applications

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the manufacturer origin, as the datasheet identifies Microsemi while other sources list Microchip Technology. Confirm the specific suffix requirements for tolerance levels and screening options. Ensure the component meets the required JEDEC registration standards and RoHS compliance if applicable to your design specifications.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 120 V Zener voltage with ±5% tolerance. Consider the thermal resistance and power derating curves when designing for ambient temperatures above 50°C. Verify that the DO-35 package dimensions fit the intended PCB layout and mounting constraints.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V. Standard tolerances are available with A (±10%) or B (±5%) suffixes, with tighter tolerances offered via C or D suffixes.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF style package. DO-7 glass body axial-leaded equivalents are also available for alternative mounting configurations.