1N4446

Overview

The Microchip Technology 1N4446 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 15V with a tolerance of 5%. The device operates in a DO-35 axial leaded package, suitable for through-hole mounting. It has a maximum power dissipation of 500mW and a test current of 5mA. The component supports a wide operating temperature range from -65°C to +175°C junction temperature.

Feature Summary

• Provides stable voltage regulation at a nominal 15V level
• Constructed using high-reliability silicon technology
• Capable of operation across an extended industrial temperature range

Applications

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

Procurement Notes

Verify the specific datasheet revision and manufacturing origin when sourcing this component. Confirm that the ordering suffix matches the required packaging format, as variations may exist between bulk and tape-and-reel options. Ensure compliance with relevant environmental directives such as RoHS requirements for the intended deployment region.

Selection Notes

Select this component when a precise 15V reference is required within a standard axial package. Consider the 500mW power rating against expected thermal conditions. Evaluate the 5% tolerance against circuit sensitivity requirements. Compare performance characteristics against alternative manufacturers if supply chain diversification is necessary.

Part Context

This part belongs to the standard 1N4xxx series of Zener diodes manufactured by Microchip Technology. These components are widely used in discrete semiconductor designs requiring reliable voltage clamping or regulation. The 1N4446 specifically addresses applications needing a 15V breakdown voltage in a compact through-hole form factor.