1N5269B

Single Zener Diodes Overview

The Microchip Technology 1N5269B is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides an 87 V nominal Zener voltage with a standard 5% tolerance (indicated by the 'B' suffix). The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 65 µA at 82 V. Electrical characteristics include a test current of 1.4 mA, a maximum Zener impedance of 2200 Ω at 0.25 mA, and a positive temperature coefficient of +0.099 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Regulates voltage across a broad operating current and temperature range
• Minimal capacitance suitable for high-frequency applications
• Inherently radiation hard per MicroNote 050

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in measurement systems
• Overvoltage protection for sensitive electronic components

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the component was originally produced by Microsemi which has undergone corporate restructuring. Confirm that the part number matches the JEDEC registered specifications for the 1N5269B series. Ensure the suffix indicates the correct voltage tolerance required for the design. Check for RoHS compliance status if applicable to the manufacturing batch.

Single Zener Diodes Selection Notes

Select this component when a precise 87 V reference is needed in a through-hole configuration. The 5% tolerance offers a balance between cost and precision compared to tighter tolerance variants. Consider the thermal resistance and derating requirements if the ambient temperature exceeds standard limits. Verify that the package dimensions fit the available PCB footprint.

Single Zener Diodes Part Context

This component belongs to the popular 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series covers a wide selection from 2.4 to 200 volts. The 1N5269B specifically addresses the higher voltage end of the spectrum within the standard glass axial-lead form factor.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5269B-TR or other manufacturers' equivalents in the DO-35 package. Ensure replacement devices meet the same 87 V nominal voltage and 5% tolerance requirements.