1N5225B-G

Single Zener Diodes Overview

The Comchip Technology 1N5225B-G is a unidirectional silicon voltage regulator diode housed in the DO-35 glass axial leaded package. It provides a nominal Zener voltage of 3.0 V with a maximum dynamic impedance of 29 Ω at a test current of 20 mA. The device supports a maximum power dissipation of 500 mW and maintains a junction temperature rating up to 175 °C. Voltage tolerance is specified at 5%, while the maximum reverse leakage current is limited to 50 μA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a low-voltage range using silicon technology.
• Features a hermetically sealed glass encapsulation for environmental protection.
• Includes polarity indication via a cathode band on the component body.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection stages
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as this part number is produced by multiple vendors including Comchip Technology, Microsemi, and Vishay. Confirm compliance requirements such as RoHS status and lead content, as specifications vary between manufacturers. Ensure the ordering suffix matches the required packaging format and regulatory certification before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 3.0 V reference is required in an axial through-hole configuration. Evaluate the thermal resistance characteristics against the expected ambient temperature conditions. Consider the 5% voltage tolerance and the 29 Ω dynamic impedance for circuit stability requirements. Verify that the 500 mW power dissipation capability meets the operational load demands.

Single Zener Diodes Part Context

This component belongs to the standard 1N522x series of Zener diodes, which covers a wide range of voltage ratings from 2.4 V to 75 V. The series utilizes a consistent DO-35 glass package and 500 mW power rating across all variants. The 'B' designation typically indicates a 5% voltage tolerance, distinguishing it from wider tolerance versions.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5225B (Panjit), 1N5225B-TP (MCC), and MSP1N5225B-1 (Microsemi). Verify that replacement parts maintain the same DO-35 package dimensions and 3.0 V nominal voltage rating.

Single Zener Diodes FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175 °C.

How is the polarity indicated on the component?

Polarity is indicated by a cathode band marked on the glass body.