1N3322A

Single Zener Diodes Overview

The Microchip Technology 1N3322A is a high-power 50 W Zener diode from the JEDEC registered 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 22.0 V at a test current of 570 mA. The device features a maximum dynamic impedance of 2.50 Ohms and supports a maximum DC Zener current of 1,900 mA. It operates within a junction and storage temperature range of -65°C to +175°C, utilizing a DO-5 (DO-203AB) package.

Single Zener Diodes Feature Summary

• Hermetically sealed welded metal and glass construction for durability
• Internal solder bond design ensuring robust electrical connections
• Standard polarity configuration with anode connected to the case
• Inherently radiation hard characteristics suitable for harsh environments

Single Zener Diodes Applications

• High power voltage regulation circuits
• Military and aerospace electronic systems
• Industrial equipment requiring robust protection

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements when ordering, as they define tolerance levels and polarity. Confirm that the application includes adequate mounting hardware and heat sinking to maintain the stud temperature below 75°C for full 50 W dissipation. Ensure compatibility with MIL-PRF-19500/358 screening if military qualification is required.

Single Zener Diodes Selection Notes

Select this component for applications demanding high power handling and strict environmental resilience. The DO-5 stud mount package facilitates efficient thermal transfer. Consider the +/- 5% tolerance indicated by the B suffix for precision regulation needs. Verify that the system can accommodate the standard anode-to-case polarity or specify the R suffix for reverse polarity.

Single Zener Diodes Part Context

This part belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These devices are designed for broad voltage regulation ranges from 3.9 V to 200 V. The series is characterized by low thermal resistance and high reliability, often utilized in sectors requiring stringent quality standards and long-term operational stability under extreme conditions.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 50 W Zener diodes with a 22 V rating in a DO-5 package. Verify thermal resistance and maximum current ratings match the original specifications. Military equivalents may require JAN, JANTX, or JANTXV prefixes per MIL-S-19500/358.