1N5225A(DO-35)

Single Zener Diodes Overview

The Microsemi Corporation 1N5225A(DO-35) is a silicon Zener diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It provides a nominal Zener voltage of 3.0 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 dissipates up to 0.5 watts at 25°C, derating to 0.48 W when mounted on an FR4 PCB. Key electrical characteristics include a maximum reverse current of 50 µA at 2.0 V and a Zener impedance of 1600 Ohms at a test current of 20 mA.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation over broad operating currents and temperatures
• Reference voltage generation in electronic circuits
• Protection against voltage transients

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'A' suffix confirms a ±10% voltage tolerance. Ensure the package designation corresponds to the DO-35 form factor. Confirm RoHS compliance status if applicable, as it depends on specific suffixes like 'e3'. Cross-reference the manufacturer's datasheet for the most current screening levels and availability details before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring a stable 3.0 V reference with moderate power dissipation capabilities. The DO-35 package suits through-hole mounting requirements. Consider the negative temperature coefficient inherent to low-voltage Zener diodes when designing for wide thermal variations. Verify that the 1600 Ohm impedance meets the circuit's dynamic load requirements.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5-watt Zener Voltage Regulators manufactured by Microsemi's Scottsdale Division. The series offers a selection from 2.4 to 200 volts with various tolerance options identified by suffix letters. These devices are JEDEC registered and available in military screening levels with specific prefixes.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF style package. DO-7 glass body axial-leaded equivalents are also offered. Consult the factory for other specific variants or tighter tolerance options.