1N3342A

Single Zener Diodes Overview

The Microchip Technology 1N3342A is a high-power 50 W Zener diode belonging to the JEDEC registered 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 120 V at a test current of 100 mA. The device features a maximum dynamic impedance of 40 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) hexagonal stud package.

Single Zener Diodes Feature Summary

• Hermetically sealed welded metal and glass construction for durability
• Internal solder bond design ensuring structural integrity
• 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 that the specific part number matches the required tolerance suffix, as the 'B' suffix indicates a +/- 5% Zener voltage tolerance. Confirm the polarity requirement, noting that standard units have the anode to the case, while reversed polarity requires an 'R' suffix in the designation. Ensure mounting hardware specifications align with the 11/16 inch hexagonal stud dimensions.

Single Zener Diodes Selection Notes

Select this component when a 50 W power dissipation capability is necessary for voltage regulation applications. The DO-5 package allows for direct stud mounting to heat sinks, facilitating efficient thermal management up to 75°C case temperature. Consider the radiation hardness and hermetic sealing if the operating environment demands resistance to extreme conditions or vacuum exposure.

Single Zener Diodes Part Context

This device is part of the Microsemi Scottsdale Division 1N3305 thru 1N3350B series of 50 Watt Zener diodes. These components are designed to operate over a broad voltage range from 3.9 V to 200 V. The series includes military qualifications such as JAN, JANTX, and JANTXV, which can be obtained by adding specific prefixes to the base part numbers for enhanced screening levels.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N4549B through 1N4556B series variants within the same product family.