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Product Detailed Parameters
- Description：DIODE ZENER 17V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：17 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：1.8 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 13 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
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Overview
The Microchip Technology 1N3316A 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 supports a maximum DC Zener current of 2,500 mA. It operates within a junction temperature range of -65°C to +175°C and utilizes a DO-5 (DO-203AB) hexagonal stud package.
Feature Summary
- Hermetically sealed welded metal and glass construction for durability
- Internal solder bond design ensuring robust electrical connections
- Standard polarity configuration with anode connected to the case
- Inherently radiation hard characteristics suitable for harsh environments
Applications
- High power voltage regulation circuits
- Overvoltage protection systems
- Reference voltage generation in industrial equipment
Procurement Notes
Verify the specific tolerance suffix required for your application, as the base part number denotes a +/- 20% tolerance while the 'A' or 'B' suffixes indicate tighter tolerances. Confirm whether standard anode-to-case polarity meets your circuit requirements or if a reverse polarity variant with an 'R' suffix is necessary. Ensure mounting hardware specifications align with the 11/16 inch hexagonal stud dimensions.
Selection Notes
Select this component when a 50 W power dissipation capability is required for stable voltage regulation. Consider the thermal resistance of 2.0°C/W maximum when designing heat sinking solutions. Evaluate the operating temperature range against environmental conditions. Verify that the 17.0 V nominal breakdown voltage matches the system reference needs.
Part Context
This component belongs to the Microsemi Scottsdale Division 1N3305 through 1N3350B series of 50 Watt Zener diodes. These devices are designed for applications requiring broad voltage selection and high power handling. The series includes military qualifications such as JAN, JANTX, and JANTXV upon request.
Replacement Considerations
Consult factory documentation for surface mount equivalents. Other parts in the 1N3305-1N3350B series may serve as alternatives if voltage ratings differ. Verify mechanical compatibility with the DO-5 package before substitution.
