1N5229

Single Zener Diodes Overview

The Microchip Technology 1N5229 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.3V with a tolerance of 5% and a maximum power dissipation of 0.5W. The device is available in the DO-35 axial through-hole package, constructed with a glass encapsulation. It operates within a temperature range of -65°C to +200°C and has a humidity sensitivity level of 1.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 4.3V potential
• Utilizes metallurgically bonded glass construction for durability
• Offers surface mount equivalent performance in an axial leaded package

Single Zener Diodes Applications

• General purpose voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog signal processing

Single Zener Diodes Procurement Notes

Verify the specific suffix letter (e.g., B, C) associated with the part number to confirm the exact voltage tolerance required for the design. Confirm RoHS compliance status as standard variants may not meet current environmental directives. Ensure the selected package matches the PCB footprint requirements for the DO-35 form factor before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a precise 4.3V reference is needed in a low-power environment. Consider the thermal management capabilities of the DO-35 package for continuous operation near the 0.5W limit. Evaluate the leakage current specifications against circuit sensitivity requirements to ensure proper noise margins are maintained during steady-state operation.

Single Zener Diodes Part Context

This component belongs to the widely recognized 1N52xx series of Zener diodes manufactured by Microchip Technology. It serves as a direct replacement for legacy JEDEC registered parts, ensuring compatibility with existing designs that utilize the standard 1N5229B specification. The series provides a reliable solution for discrete voltage regulation tasks across various industrial and commercial electronic systems.

Single Zener Diodes Replacement Considerations

Equivalent parts include the Vishay 1N5229B and generic equivalents meeting the 4.3V/0.5W/DO-35 specification. Verify pinout orientation and physical dimensions match the original board layout when substituting.