1N5268BDO35

Single Zener Diodes Overview

The Microsemi Corporation 1N5268BDO35 is a 0.5 W glass axial-lead Zener diode in the DO-35 (DO-204AH) package. It provides an 82 V nominal Zener voltage with a ±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 59 μA at 59 V. Its electrical characteristics include a test current of 1.5 mA, a maximum dynamic impedance of 330 Ω at 0.25 mA, and a typical capacitance determined by the breakdown voltage.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm compliance requirements and screening levels. Ensure the component matches the required JEDEC registration standards and that the package dimensions align with the target PCB layout. Confirm RoHS status if applicable, as standard versions may differ from e3 compliant variants.

Single Zener Diodes Selection Notes

Select this component when a precise 82 V reference is needed with tight ±5% tolerance. Consider the thermal resistance and power derating curves for high-temperature environments. Verify that the low leakage current and minimal capacitance meet the circuit's noise and speed requirements compared to other series members.

Single Zener Diodes Part Context

This part belongs to the popular 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection from 2.4 to 200 volts in standard 5% or 10% tolerances. Tighter tolerances are available via different suffix letters, and military screening options exist with specific prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N5268C for tighter 2% tolerance or 1N5268A for 10% tolerance. Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package.