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Product Detailed Parameters
- Description：DIODE ZENER 11V 50W TO204AD
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：11 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：0.8 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 8.4 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：TO-204AD
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 10 A
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N2809A is a high-power 50W Zener diode with a nominal voltage of 11V. It features an internal solder bond construction and is hermetically sealed in a TO-204AD (TO-3) through-hole package. The device provides voltage regulation within the JEDEC registered 1N2804 through 1N2846B series, offering robust performance for demanding applications.
Feature Summary
- Hermetically sealed welded construction for environmental protection
- Internal solder bond design ensuring mechanical stability
- High power dissipation capability of 50 Watts
- JEDEC registered part number for standardized compatibility
Applications
- Voltage regulation in high-power circuits
- Overvoltage protection systems
- Reference voltage sources in industrial equipment
Procurement Notes
Verify the specific qualification level required, as commercial versions are available alongside JAN, JANTX, and JANTXV qualified levels per MIL-PRF-19500/114. Confirm that the TO-204AD package matches your thermal and mounting constraints. Ensure the 11V nominal voltage aligns with your circuit design requirements before procurement.
Selection Notes
Select this component when a 50W Zener diode with 11V regulation is needed in a TO-3 package. Consider the hermetic seal if operating in harsh environments. Verify tolerance requirements, as standard commercial versions may differ from military-grade specifications. Ensure adequate heat sinking is planned due to the high power rating.
Part Context
This part belongs to the Microchip Technology series of 50 Watt Zener diodes, which includes JEDEC registered numbers from 1N2804B through 1N2846B. These devices are designed for voltage regulation in values ranging from 3.9 V to 200 V. The 1N2809A specifically provides 11V regulation within this high-power family.
Replacement Considerations
Compatible substitutes include other 11V 50W Zener diodes in TO-204AD packages from manufacturers adhering to similar JEDEC standards. Verify pinout compatibility and thermal resistance characteristics. Military-spec equivalents may require specific qualification levels such as JAN or JANTX.
