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Product Detailed Parameters
- Description：DIODE ZENER 17V 10W DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：17 V
- Tolerance：±5%
- Power - Max：10 W
- Impedance (Max) (Zzt)：4 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 13 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 1N2981RB is a silicon unidirectional Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 17V with a tolerance of 5% and a power dissipation rating of 10W. The device utilizes a DO-4 (DO-203AA) hermetically sealed glass axial leaded package. Key electrical characteristics include a maximum dynamic impedance of 4Ω at the test current. The component is designed for robust voltage regulation applications, with the case connected to the cathode terminal.
Feature Summary
- Hermetically sealed glass construction for environmental protection
- High power handling capability suitable for demanding circuits
- Single unidirectional configuration for precise voltage clamping
Applications
- Voltage reference circuits requiring high stability
- Overvoltage protection in industrial systems
- Power supply regulation stages
Procurement Notes
Verify compliance status as the component is identified as lead-containing and non-RoHS compliant. Confirm that the DO-4 package dimensions match the design footprint. Ensure the manufacturer source is Microchip or an authorized distributor to guarantee authenticity and traceability for critical applications.
Selection Notes
Select this component when a 10W power rating and 17V regulation point are required. The DO-4 package offers superior thermal performance compared to smaller surface-mount alternatives. Consider the hermetic seal requirement if the operating environment demands resistance to moisture or corrosive agents.
Part Context
This part belongs to the standard 1N2981 series of 10W Zener diodes. The 'RB' suffix typically denotes specific manufacturing lot or revision details within the Microchip portfolio. It serves as a rugged discrete semiconductor solution for legacy and high-reliability electronic designs.
Replacement Considerations
Compatible substitutes include the 1N2981A (10% tolerance) or generic equivalents from other manufacturers offering identical 17V, 10W, DO-4 specifications. Verify pinout compatibility and thermal resistance values before substitution.
