1N5226

Single Zener Diodes Overview

The Microchip Technology 1N5226B is a silicon unidirectional Zener voltage regulator diode designed for through-hole mounting in the DO-35 (DO-7) glass axial-lead package. It provides a nominal Zener voltage of 3.3 V with a 5% tolerance at a test current of 20 mA. The device dissipates up to 500 mW and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 25 µA, a Zener impedance of 28 Ohms, and a negative voltage temperature coefficient of -0.07%/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Negative voltage temperature coefficient suitable for low-voltage regulation
• High thermal operating capability up to 200°C junction temperature

Single Zener Diodes Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix against official datasheets, as variants like 1N5226BUR-1 utilize surface mount packages while standard versions use axial leads. Confirm RoHS compliance status and screening levels required for your application. Ensure the manufacturer source is identified correctly, as multiple vendors produce this JEDEC number.

Single Zener Diodes Selection Notes

Select this component when a stable 3.3 V reference is needed in high-temperature environments. The DO-35 package supports higher thermal limits compared to smaller surface mount options. Verify that the 28 Ohm impedance meets the ripple rejection requirements of the target circuit design.

Single Zener Diodes Part Context

This part belongs to the widely used 1N5221 through 1N5281 series of 0.5 W Zener diodes. These components serve as industry-standard replacements for legacy designs requiring reliable voltage clamping or referencing in through-hole PCB layouts.

Single Zener Diodes Replacement Considerations

Equivalent parts include the Vishay 1N5226B and generic equivalents from Central Semiconductor. Cross-reference specifications carefully to ensure package compatibility and tolerance alignment.