1N5228BDO35E3

Single Zener Diodes Overview

The Microsemi Corporation 1N5228BDO35E3 is a Zener diode with a nominal voltage of 3.9V and a tolerance of ±5%. It operates in the DO-35 (DO-204AH) glass axial-lead package. The device provides a maximum power dissipation of 0.5W at 25°C, with a steady-state rating of 0.48W when mounted on an FR4 PCB. Electrical characteristics include a maximum reverse current of 20μA at 2.3V and a maximum Zener impedance of 23Ω at a test current of 19mA. The component supports an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge (ESD)
• Minimal capacitance across the operating voltage range

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in precision circuits
• Overvoltage protection in electronic systems

Single Zener Diodes Procurement Notes

Verify that the part number suffix 'e3' confirms RoHS compliance and matte-tin plating finish. Ensure the ordering designation matches the specific JEDEC registered type required for your application. Confirm that the manufacturer documentation aligns with the requested screening levels and packaging options before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring a standard 3.9V reference with ±5% tolerance. Consider the thermal resistance of 250°C/W junction-to-lead when designing heat dissipation paths. Verify that the required operating current falls within the specified test conditions to ensure accurate voltage regulation performance.

Single Zener Diodes Part Context

This device belongs to the 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. These glass axial-leaded DO-35 Zeners are also available in various military screening levels by adding prefix identifiers such as MQ, MX, MV, or MSP.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available as MLL5221 to MLL5281B in the DO-213AA MELF style package. DO-7 glass body axial-leaded Zener equivalents are also available for alternative mounting requirements.