1N3323A

Single Zener Diodes Overview

The Microchip Technology 1N3323A 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 27.0 V at a test current (IZT) of 460 mA. The device features a maximum dynamic impedance (ZZT) of 2.80 Ohms and a maximum DC Zener current (IZM) of 1,500 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
• Overvoltage protection systems
• Reference voltage generation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for tolerance and polarity before ordering. The standard 'A' suffix indicates a +/- 10% tolerance, while 'B' denotes +/- 5%. An 'R' suffix signifies reversed polarity (cathode to case). Confirm that the procurement documentation aligns with the required MIL-PRF-19500/358 qualification level if military screening is necessary for the application.

Single Zener Diodes Selection Notes

Select this component when a 50 W power dissipation capability is required for voltage regulation. Ensure adequate heat sinking is provided to maintain the stud temperature below 75°C for full rated power. Consider the thermal resistance of 2.0°C/W maximum when designing the thermal management system. Verify that the operating current remains within the specified limits to prevent instability or excessive temperature rise.

Single Zener Diodes Part Context

This part belongs to the Microsemi Scottsdale Division's high-power Zener diode family, covering the 1N3305 through 1N3350B series. These devices are designed for applications requiring robust voltage regulation up to 50 Watts. The series offers a broad range of voltages from 3.9 V to 200 V, packaged in the industry-standard DO-5 hexagonal stud format for efficient mounting and heat transfer.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts within the 1N3305–1N3350B series with matching voltage ratings. Equivalent parts from other manufacturers must match the 50 W power rating, DO-5 package dimensions, and thermal characteristics. Verify that any substitute meets the same hermetic sealing and radiation hardness requirements if applicable.