1N3337RB

Single Zener Diodes Overview

The Microchip Technology 1N3337RB is a high-power 50 W Zener diode from the 1N3305-1N3350B series, housed in a hermetically sealed DO-5 (DO-203AB) metal and glass package. It features a nominal Zener voltage of 68 V with a ±5% tolerance, tested at a current of 180 mA. The device exhibits a maximum dynamic impedance of 8.0 Ω at test current and 140 Ω at knee current. It supports a maximum DC Zener current of 600 mA and operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed welded construction for environmental durability
• Internal solder bond design ensuring structural integrity
• Reverse polarity configuration with cathode connected to the case
• 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 component matches the specific reverse polarity designation indicated by the 'R' suffix. Confirm the required military qualification level, such as JAN or JANTXV, if applicable to your system specifications. Ensure proper mounting hardware is selected to maintain thermal equilibrium at the hexagonal stud base during operation.

Single Zener Diodes Selection Notes

Select this component when a 68 V reference with high power dissipation capability is required. The DO-5 package allows for direct stud mounting to heat sinks. Consider the thermal resistance of 2.0 °C/W maximum when designing the cooling solution. Verify that the application environment does not exceed the specified operating temperature limits.

Single Zener Diodes Part Context

This part belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These devices are registered with JEDEC and offer a broad voltage selection range. The series is designed for applications demanding high reliability and radiation hardness, often utilized in defense and space-oriented electronics where standard commercial parts may fail.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N3337B for standard polarity or other 1N33xxB series variants for different voltage levels. Military qualified versions such as JANTX1N3337B or JANTXV1N3337B provide enhanced screening but require verification of mechanical compatibility.