1N3310RA

Overview

The Microchip Technology 1N3310RA 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 11.0 V at a test current of 1,100 mA and a maximum dynamic impedance of 0.80 Ohms. The device features reverse polarity (cathode to case) indicated by the 'R' suffix and a standard tolerance of ±10% denoted by the 'A' suffix. It operates within a junction temperature range of -65°C to +175°C and utilizes a hermetically sealed DO-5 (DO-203AB) package.

Feature Summary

• Hermetically sealed welded metal and glass construction for durability
• Internal solder bond design ensuring structural integrity
• Reverse polarity configuration with cathode connected to the case
• Radiation hard characteristics suitable for harsh environments

Applications

• High power voltage regulation in industrial systems
• Protection circuits requiring robust thermal performance
• Military and aerospace applications utilizing radiation hardness

Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm polarity and tolerance requirements. Confirm that the required military qualification levels are available if applicable. Ensure mounting hardware specifications align with the hexagonal stud dimensions provided in the mechanical data sheet before finalizing procurement orders.

Selection Notes

Select this component when a 50 W power dissipation capability is necessary for voltage regulation tasks. The reverse polarity option allows for direct case grounding or specific circuit topologies. Verify that the operating environment supports the specified temperature range and that adequate heat sinking is implemented to maintain the junction temperature below the derating threshold.

Part Context

This part belongs to the 1N3305 through 1N3350B series of high power Zener diodes manufactured by Microchip Technology's Scottsdale Division. These devices are designed for applications requiring broad voltage selection and high thermal stability. The series includes various voltage ratings and tolerance options to accommodate diverse electronic design requirements.

Replacement Considerations

Consult factory documentation for surface mount equivalents or alternative voltage ratings within the same series. Verify compatibility with existing mounting hardware due to the specific hexagonal stud thread dimensions.