1N3330RB

Single Zener Diodes Overview

The Microchip Technology 1N3330RB 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 47.0 V at a test current of 270 mA. The device features a maximum dynamic impedance of 5.00 ohms and a maximum reverse current of 10 µA. It operates within a junction and storage temperature range of -65°C to +175°C, dissipating up to 50 watts at a case temperature below 75°C. The unit utilizes a DO-5 (DO-203AB) package with an 11/16 inch hexagonal stud.

Single Zener Diodes 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

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 specific part number includes the 'R' suffix to confirm reversed polarity orientation where the cathode connects to the case. Ensure the procurement documentation references the correct tolerance suffix, as the 'B' designation indicates a standard voltage tolerance of plus or minus 5 percent. Confirm compliance with relevant military specifications if radiation hardness or specific screening levels are required for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a 47.0 V reference point is required in high power applications. The DO-5 package allows for direct mounting to heat sinks via the hexagonal stud, facilitating effective thermal management. Consider the maximum DC Zener current of 880 mA when designing the biasing circuitry to ensure stable operation without exceeding the 50 watt power dissipation limit under worst-case thermal conditions.

Single Zener Diodes Part Context

This device belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These components are designed for broad voltage regulation needs ranging from 3.9 V to 200 V. The series offers various tolerance options and military qualifications, providing engineers with standardized solutions for demanding power electronics and control system designs.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N3330B for standard polarity configurations. For military grade requirements, consider the JAN1N3330B, JANTX1N3330B, or JANTXV1N3330B variants which offer specific screening levels per MIL-PRF-19500/358.