1N3316RB

Overview

The Microchip Technology 1N3316RB is a high-power 50 W Zener diode from the JEDEC registered 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 17.0 V at a test current of 740 mA. The device features a maximum dynamic impedance of 1.80 ohms and a typical temperature coefficient of +0.075 %/°C. It utilizes a DO-5 (DO-203AB) package with an 11/16 inch hexagonal stud, offering a maximum thermal resistance of 2.0 °C/W. The 'R' suffix indicates reverse polarity with the cathode connected to the case.

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
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• High power voltage regulation in industrial systems
• Protection circuits requiring broad operating current ranges
• Military and aerospace applications utilizing JAN or JANTX qualifications

Procurement Notes

Verify the specific revision status and manufacturing origin when sourcing this component. Confirm that the supplier provides documentation regarding the hermetic seal integrity and internal solder bond quality. Ensure the ordering part number correctly reflects the required tolerance suffix and polarity configuration for your circuit design requirements.

Selection Notes

Select this component for applications demanding high power dissipation capabilities up to 50 watts. Consider the thermal management requirements associated with the DO-5 package and hexagonal stud mounting. Evaluate the need for reverse polarity configuration versus standard anode-to-case arrangements based on the system layout constraints.

Part Context

This device belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These components are designed for rugged environments and offer a wide selection of voltages ranging from 3.9 V to 200 V. The series supports various military qualification levels including JAN, JANTX, and JANTXV.

Replacement Considerations

Consult factory documentation for surface mount equivalents. Verify compatibility with existing mounting hardware such as insulators, bushings, and washers when substituting.