1N5271A (DO-35)

Single Zener Diodes Overview

The Microsemi Corporation 1N5271A is a 0.5-watt Zener voltage regulator housed in a hermetically sealed glass axial-lead DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 100 V with a standard tolerance of ±10%, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 100 µA at 76 V. Electrical characteristics include a test current of 500 mA, a maximum Zener impedance of 2600 Ohms at 0.25 mA, and a forward voltage of 1.5 V maximum at 200 mA.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required tolerance level, as the 'A' suffix specifically denotes ±10% tolerance. Confirm whether military screening prefixes or RoHS compliant 'e3' suffixes are needed for specific project requirements. Ensure the component meets the necessary JEDEC registration standards if applicable to the design specifications.

Single Zener Diodes Selection Notes

Select this component when a 100 V Zener voltage with ±10% tolerance is required in a DO-35 package. Consider the thermal resistance and power derating curves for high-temperature environments. Evaluate the minimal capacitance and radiation hardness if the application involves sensitive signal lines or harsh environmental conditions.

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 selection from 2.4 to 200 volts in standard 5% or 10% tolerances. Tighter tolerances are available with different suffix letters. These glass axial-leaded DO-35 Zeners are also available in various military screening levels by adding prefix identifiers.

Single Zener Diodes Replacement Considerations

Equivalent parts include the Microchip Technology 1N5271A and the Microsemi MQ1N5271-1TR.