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Product Detailed Parameters
- Description：DIODE ZENER 14V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：14 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：1.2 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 11.4 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 1N3313A 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 14.0 V at a test current of 890 mA. The device features internal solder bond construction and is hermetically sealed in an industry-standard DO-5 (DO-203AB) metal and glass case with a hexagonal stud. Standard polarity connects the anode to the case, while reverse polarity is available via an 'R' suffix.
Feature Summary
- Hermetically sealed welded construction for durability
- Internal solder bond design
- Radiation hard characteristics
- ESD nonsensitive per MIL-STD-750 Method 1020
Applications
- High power voltage regulation
- Military and aerospace systems
- Harsh environment protection circuits
Procurement Notes
Verify the specific tolerance suffix required for your application. The 'A' suffix indicates +/- 10% tolerance, while 'B' denotes +/- 5%. Confirm if reverse polarity is needed by checking for the 'R' suffix in the part number. Ensure mounting hardware and thermal management meet the 50 W dissipation requirements at case temperatures below 75°C.
Selection Notes
Select this component when high power handling and radiation hardness are critical. The DO-5 package allows for direct mounting to heat sinks via the hexagonal stud. Consider the temperature coefficient of +0.070%/°C for thermal stability calculations. Verify that the operating junction temperature remains within the -65°C to +175°C range during operation.
Part Context
This part belongs to the Microsemi Scottsdale Division 1N3305 thru 1N3350B series of 50 Watt Zener Diodes. These devices are designed for robust applications requiring broad voltage regulation capabilities ranging from 3.9 V to 200 V. The series is also available in JAN, JANTX, and JANTXV military qualifications for enhanced screening levels.
Replacement Considerations
Equivalent parts include other 50 W Zener diodes in the DO-5 package with a 14 V nominal rating. Check for matching thermal resistance and power derating curves. Military equivalents may require JAN or JANTX prefixes depending on screening needs.
