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Product Detailed Parameters
- Description：DIODE ZENER 8.2V 10W DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：8.2 V
- Tolerance：±5%
- Power - Max：10 W
- Impedance (Max) (Zzt)：1.5 Ohms
- Current - Reverse Leakage @ Vr：50 µA @ 6.2 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Chassis, Stud Mount
- Package / Case：DO-203AA, DO-4, Stud
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 2 A
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Overview
The Microchip Technology 1N2972A is a single silicon Zener diode rated for 10 watts of power dissipation. It features an 8.2 V nominal Zener voltage with a ±5% tolerance and a maximum dynamic impedance of 1.5 Ω. The device utilizes a DO-213AA (DO-4) stud-mount metal package, connecting the case to the cathode. It supports a wide operating temperature range from -65 °C to +175 °C and is hermetically sealed for high reliability.
Feature Summary
- Hermetically sealed metal construction for environmental protection
- Stud-mount design facilitating direct chassis thermal management
- High-temperature capability up to 175 °C junction temperature
Applications
- Military aerospace power supply regulation
- High-reliability industrial voltage reference circuits
- Harsh environment overvoltage protection systems
Procurement Notes
Verify the specific manufacturer source, as this component is produced by multiple vendors including Microchip, Central Semiconductor, and Microsemi. Confirm that the received unit matches the required hermetic seal standard and package dimensions. Ensure the procurement channel provides valid traceability documentation suitable for regulated industries.
Selection Notes
Select this component when a robust, high-power Zener regulator is required for extreme temperature environments. The stud-mount configuration is essential for applications demanding efficient heat transfer to a chassis or heatsink. Verify that the 8.2 V breakdown voltage aligns with the circuit's regulation requirements.
Part Context
This part belongs to the 1N2972 series of 10-watt Zener diodes. Variants such as 1N2972B and 1N2972C share similar mechanical and electrical profiles but differ in voltage tolerance specifications. The series is widely recognized for its durability in critical electronic systems.
Replacement Considerations
Cross-reference with JANTX1N2972 or 1N2972C if different tolerance levels are acceptable. Verify pinout compatibility, noting that some variants connect the case to the anode rather than the cathode.
