1N3029B-1

Overview

The Microchip Technology 1N3029B-1 is a single Zener diode rated for 24 V nominal voltage with a 5% tolerance. It operates in the DO-41 axial through-hole package and dissipates up to 1 W of power. The device features a maximum reverse leakage current of 10 µA and a Zener impedance of 25 Ω at a test current of 10.5 mA. It supports an operating temperature range from -55°C to +175°C.

Feature Summary

• Provides stable voltage regulation via Zener breakdown characteristics
• Utilizes metallurgical bonding for enhanced thermal stability
• Supports extended high-temperature operation up to 175°C

Applications

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

Procurement Notes

Verify the JAN suffix indicates compliance with MIL-PRF-19500/115 requirements. Confirm the DO-41 axial package matches board layout constraints. Ensure the 1 W power dissipation rating aligns with thermal management designs. Validate that the 24 V Zener voltage meets circuit specifications.

Selection Notes

Select this component when a 24 V regulated supply is required in an axial package. Consider the 25 Ω impedance for dynamic load applications. Evaluate the 10 µA leakage current against low-power standby requirements. Verify compatibility with -55°C to +175°C environmental conditions.

Part Context

This part belongs to the 1N30xx series of 1-watt Zener diodes manufactured by Microchip Technology. These components are designed for robust performance in demanding environments. The series offers various voltage options within the DO-41 package format.

Replacement Considerations

Public confirmed substitute part numbers: None.