1N5239BE3

Single Zener Diodes Overview

The Microchip Technology 1N5239BE3 is a 500 mW glass axial-lead Zener diode housed in a DO-35 package. It provides a nominal Zener voltage of 9.1 V 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 leakage current of 3 µA at 7 V. Electrical characteristics include a Zener impedance of 10 Ohms at a test current of 20 mA and a forward voltage of 1.5 V maximum at 200 mA.

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
• Non-sensitive to electrostatic discharge (ESD)

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in electronic systems
• Power supply regulation and clipping applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance and matte-tin plating as specified in the datasheet. Confirm the 'B' suffix indicates the required ±5% voltage tolerance. Ensure the procurement specification matches the DO-35 axial-lead package form factor and the 500 mW power dissipation rating for the target application environment.

Single Zener Diodes Selection Notes

Select this component when a precise 9.1 V regulation point is needed with tight tolerance requirements. The DO-35 package suits through-hole mounting designs. Consider the thermal resistance of 250 °C/W junction-to-lead when designing heat dissipation paths. Verify that the operating current remains within the 20 mA test current specifications to maintain accuracy.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 to 200 volts. The 'e3' suffix denotes RoHS compliant devices available from Microsemi Scottsdale Division.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5239A for 10% tolerance or 1N5239C/D for tighter tolerances. Surface mount equivalents are available in the MLL5221 to MLL5281B MELF style packages.