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Product Detailed Parameters
- Description：DIODE ZENER 18V 10W DO203AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：10 W
- Impedance (Max) (Zzt)：3 Ohms
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-
- Mounting Type：Stud Mount
- Package / Case：DO-203AA, DO-4, Stud
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Microchip Technology 1N1357A is an active single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 18 V with a tolerance of ±5%. The device supports a maximum power dissipation of 10 W and has a maximum impedance of 3 Ohms. It utilizes a stud mount configuration within the DO-203AA (DO-4) package, ensuring robust thermal performance and mechanical stability for high-power circuit protection.
Feature Summary
- Provides stable voltage regulation at 18 V nominal level
- Supports high power dissipation up to 10 W
- Utilizes stud mount construction for secure installation
Applications
- High-power voltage regulation circuits
- Overvoltage protection systems
- Reference voltage sources in industrial equipment
Procurement Notes
Verify the manufacturer designation as Microchip Technology when sourcing this component. Confirm the package type is DO-203AA (DO-4) and the mounting style is stud mount. Ensure the part status is listed as Active to guarantee availability. Cross-reference specifications such as 18 V Zener voltage and 10 W power rating against official datasheets to prevent substitution errors.
Selection Notes
Select this component for applications requiring high-power Zener regulation. The 10 W power rating necessitates appropriate heat sinking solutions due to the stud mount design. Verify that the 18 V nominal voltage aligns with circuit requirements. Consider the ±5% tolerance for precision needs. The DO-4 package size should be accommodated within the mechanical layout constraints of the target assembly.
Part Context
This component belongs to the family of single Zener diodes manufactured by Microchip Technology. It serves as a discrete semiconductor device for voltage control. The 1N1357A variant specifically addresses high-power requirements compared to lower-wattage counterparts. Its design focuses on reliability and thermal management in demanding electronic environments.
Replacement Considerations
Ensure any substitute matches the 18 V Zener voltage, 10 W power rating, and DO-203AA package. Verify compatibility with stud mount installation methods. Check for equivalent impedance and tolerance specifications to maintain circuit performance integrity.
