1N3334A

Overview

The Microchip Technology 1N3334B is a high-power 50 W Zener diode within the 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 62.0 V at a test current of 200 mA. The device features a maximum dynamic impedance of 7.00 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.

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

Applications

• High power voltage regulation circuits
• Military and aerospace electronic systems
• Industrial equipment requiring rugged components

Procurement Notes

Verify the specific suffix requirements, as the 'B' designation indicates a 5% voltage tolerance. Confirm that the standard anode-to-case polarity aligns with your circuit layout or request the reversed polarity variant if necessary. Ensure adequate heat sinking is planned to maintain the stud temperature below 75°C for full 50 W dissipation capability.

Selection Notes

Select this component when designing systems requiring high power handling capabilities in a hermetically sealed package. The 62.0 V rating fits applications needing precise regulation within the broader 3.9 V to 200 V series range. Consider the thermal resistance and mounting hardware requirements for effective heat dissipation in confined spaces.

Part Context

This part belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These devices are JEDEC registered and offer a broad selection of voltages. The series is also available in JAN, JANTX, and JANTXV military qualifications for specialized screening requirements.

Replacement Considerations

Equivalent parts include other 50 W Zener diodes from the same series such as 1N3333B or 1N3335B, provided the voltage tolerance and polarity match the design needs.