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Product Detailed Parameters
- Description：DIODE ZENER 10V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：10 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：0.6 Ohms
- Current - Reverse Leakage @ Vr：25 µA @ 6.7 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 1N3309A is a high-power 50 W Zener diode designed for voltage regulation across a broad operating current and temperature range. It features a nominal Zener voltage of 10.0 V with a tolerance of +/- 10%, measured at a test current of 1,200 mA. The device operates within a junction and storage temperature range of -65°C to +175°C and utilizes a DO-5 (DO-203AB) hexagonal stud package. Standard polarity connects the anode to the case.
Feature Summary
- Hermetically sealed welded metal and glass construction
- Internal solder bond design
- Inherently radiation hard per Microsemi MicroNote 050
- Non-sensitive to ESD per MIL-STD-750 Method 1020
Applications
- Voltage regulation in power supplies
- High power dissipation applications requiring adequate heat sinking
- Military and aerospace systems utilizing JAN, JANTX, or JANTXV qualifications
Procurement Notes
Verify the specific suffix requirements for your application. The 'A' suffix indicates a +/- 10% Zener voltage tolerance. Confirm if standard anode-to-case polarity meets your circuit design, or if reverse polarity (cathode to case) via an 'R' suffix is required. Ensure mounting hardware and thermal management solutions are compatible with the DO-5 hexagonal stud package.
Selection Notes
Select this component when a robust 50 W Zener diode is needed for high-voltage regulation. The 1N3309A provides a 10.0 V reference with moderate tolerance. Consider the maximum DC Zener current of 4,300 mA and dynamic impedance of 0.60 Ohms for circuit stability. Verify that the thermal resistance of 2.0 °C/W can be managed within your system's thermal envelope.
Part Context
This part belongs to the 1N3305 through 1N3350B series of 50 Watt Zener Diodes manufactured by Microchip Technology's Scottsdale Division. These devices offer a wide selection of voltages ranging from 3.9 V to 200 V. The series is JEDEC registered and available in various military qualification levels including JAN, JANTX, and JANTXV.
Replacement Considerations
Equivalent parts include JAN1N3309B and other variants within the 1N3305-1N3350B series. Consult factory documentation for surface mount equivalents or alternative voltage ratings.
