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Product Detailed Parameters
- Description：DIODE ZENER 56V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：56 V
- Tolerance：±5%
- Power - Max：50 W
- Impedance (Max) (Zzt)：6 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 1N3334B is a high-power 50 W Zener diode from the 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 56 V at a test current of 220 mA. The device features a maximum dynamic impedance of 6.00 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 with a hexagonal stud.
Feature Summary
- Hermetically sealed welded metal and glass construction for durability
- Internal solder bond design ensuring structural integrity
- Standard polarity configuration with anode connected to the case
- Inherently radiation hard characteristics suitable for harsh environments
Applications
- High power voltage regulation circuits
- Industrial equipment requiring robust protection
- Military and aerospace systems utilizing MIL-PRF-19500/358 qualified variants
Procurement Notes
Verify the specific manufacturer origin, as the datasheet references Microsemi Scottsdale Division while the brand is listed as Microchip Technology. Confirm that the DO-5 package dimensions and mounting hardware requirements align with your mechanical design constraints before finalizing procurement.
Selection Notes
Select this component when applications require high power dissipation capabilities up to 50 watts. Ensure adequate heat sinking is provided to maintain the case temperature below 75°C for full rated power operation. Consider the +/- 5% tolerance indicated by the B suffix if precise voltage regulation is critical.
Part Context
This part belongs to the 1N3305 through 1N3350B series of 50 Watt Zener diodes. These devices are designed for broad voltage regulation ranges from 3.9 V to 200 V. The series offers low thermal resistance and is available in various military qualification levels including JAN, JANTX, and JANTXV.
Replacement Considerations
Equivalent parts include other 50 W Zener diodes with similar voltage ratings and DO-5 packaging. Verify thermal resistance and mounting thread specifications (1/4-28 threads) match existing designs.
