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Product Detailed Parameters
- Description：DIODE ZENER 52V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：52 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：5.5 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 42.6 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Chassis, Stud Mount
- Package / Case：DO-203AB, DO-5, Stud
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 10 A
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N3333A is a high-power 50 W Zener diode from the 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 51 V at a test current of 245 mA. The device features a maximum dynamic impedance of 5.2 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 construction for environmental protection
- Internal solder bond design for mechanical reliability
- Inherently radiation hard characteristics
- Standard polarity configuration with anode connected to the case
Applications
- High power voltage regulation circuits
- Industrial equipment requiring robust thermal performance
- Military and aerospace systems utilizing JAN, JANTX, or JANTXV qualifications
Procurement Notes
Verify the specific suffix requirements for tolerance and polarity before ordering. Confirm that adequate heat sinking is provided to maintain stud temperatures below 75°C for full 50 W dissipation. Check for military qualification prefixes if radiation hardness or enhanced screening is required for the application environment.
Selection Notes
Select this component for applications demanding high power handling in a stud-mount package. Ensure the system can accommodate the DO-5 hexagonal base mounting hardware. Consider the positive temperature coefficient above 5 V when designing for wide temperature variations. Verify compatibility with the required voltage tolerance levels.
Part Context
This part belongs to the 1N3305 through 1N3350B series of 50 W Zener diodes manufactured by Microsemi, now part of Microchip Technology. These devices are JEDEC registered and designed for high-reliability environments. The series covers a broad voltage range from 3.9 V to 200 V, offering standardized solutions for power supply regulation and overvoltage protection.
Replacement Considerations
Consult the manufacturer for surface mount equivalents. Direct replacements must match the 50 W power rating, DO-5 package dimensions, and 51 V nominal voltage. Military qualified versions require matching JAN, JANTX, or JANTXV prefixes.
