1N5270B

Single Zener Diodes Overview

The Microchip Technology 1N5270B is a 500 mW glass axial-lead Zener diode housed in a DO-35 package. It provides a nominal Zener voltage of 91 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 66 μA at the rated voltage. Electrical characteristics include a test current of 1.4 mA, a maximum Zener impedance of 2300 Ω, and a positive voltage temperature coefficient of +0.099 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance for high-frequency applications
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge (ESD)

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the component was originally produced by Microsemi Scottsdale Division. Confirm that the part number suffix 'B' corresponds to the required ±5% tolerance specification. Ensure the package type matches the DO-35 glass axial-lead form factor required for the design.

Single Zener Diodes Selection Notes

Select this component when a precise 91 V regulation point is needed with tight manufacturing tolerances. The positive temperature coefficient must be accounted for in thermal designs. Verify that the 500 mW power dissipation rating meets the circuit's peak load requirements without exceeding derating curves.

Single Zener Diodes Part Context

This component 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. Devices are available in various screening levels and tolerance options, including military specifications via specific prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5269B and 1N5271B. These share the same DO-35 package and 500 mW power rating but differ in nominal Zener voltage values.