1N3337A

Single Zener Diodes Overview

The Microchip Technology 1N3337A is a high-power 50 W Zener diode within the JEDEC registered 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 68.0 V at a test current of 180 mA. The device features a maximum dynamic impedance of 8.0 Ohms and a maximum reverse current of 10 µA. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 50 watts when mounted on a heat sink below 75°C. The component 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 robust electrical connections
• Inherently radiation hard characteristics suitable for harsh environments
• ESD nonsensitive performance verified per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• High power voltage regulation circuits
• Military and aerospace electronic systems
• Harsh environment protection applications

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements, as standard polarity connects the anode to the case while an 'R' suffix indicates reversed polarity with the cathode to the case. Confirm tolerance needs, noting that the 'B' suffix denotes a 5% voltage tolerance. Ensure mounting hardware such as insulators or bushings are sourced separately if required for the installation.

Single Zener Diodes Selection Notes

Select this component for applications requiring high power dissipation capabilities up to 50 watts. Consider the thermal resistance of 2.0°C/W maximum when designing heat sinking solutions. Verify that the operating voltage falls within the specified breakdown range and that the package dimensions align with the available mounting space in the assembly.

Single Zener Diodes Part Context

This part belongs to the 1N3305 through 1N3350B series manufactured by Microsemi, now part of Microchip Technology. These devices are designed for demanding applications where reliability and high power handling are critical. The series offers a broad selection of voltages ranging from 3.9 V to 200 V in a standardized industrial package format.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N4550B and other members of the 1N33xxB series sharing identical mechanical and electrical specifications.