1N3342RB

Single Zener Diodes Overview

The Microchip Technology 1N3342RB is a high-power 50 W Zener diode from the 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 110 V at a test current of 110 mA. The device features a maximum dynamic impedance of 30 ohms and a maximum reverse current of 10 µA. It operates within a junction temperature range of -65°C to +175°C and utilizes a DO-5 (DO-203AB) package with a hexagonal stud.

Single Zener Diodes Feature Summary

• Hermetically sealed welded construction with internal solder bond
• Reverse polarity configuration with cathode connected to case
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High power voltage regulation
• Military and aerospace circuits requiring MIL-PRF-19500/358 qualification
• Harsh environment applications demanding radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific revision level and manufacturing origin when sourcing this component, as historical production may involve Microsemi or Microchip entities. Confirm that the R suffix correctly denotes reversed polarity for your circuit topology. Ensure mounting hardware specifications align with the DO-5 hexagonal stud requirements for proper thermal management.

Single Zener Diodes Selection Notes

Select this component for applications requiring robust 50 W power dissipation capabilities in a hermetically sealed metal-glass package. The reversed polarity variant is suitable where the case must serve as the cathode terminal. Consider the thermal resistance characteristics and derating curves for effective heat sinking design in high-temperature environments.

Single Zener Diodes Part Context

This part belongs to the 1N3305 through 1N3350B series of 50 Watt Zener diodes manufactured by Microchip Technology's Scottsdale Division. These devices are JEDEC registered and offer a broad voltage selection range. The series is designed for high reliability and is available in various military screening levels including JAN, JANTX, and JANTXV qualifications.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 50 W Zener diodes in the DO-5 package with matching 110 V regulation and reversed polarity. Verify mechanical dimensions and thermal resistance values to ensure compatibility with existing mounting structures and heat sinks.