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Product Detailed Parameters
- Description：DIODE ZENER 25V 10W DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：25 V
- Tolerance：±5%
- Power - Max：10 W
- Impedance (Max) (Zzt)：6 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 18.2 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
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N2987B is a single silicon Zener diode rated for 10 watts of power dissipation. It provides a nominal Zener voltage of 25 V with a tolerance of ±5%. The device is designed for chassis or stud mounting and utilizes the DO-213AA (DO-4) package. Key electrical characteristics include a maximum Zener impedance of 6 Ohms, a reverse leakage current of 1 µA at 9.9 V, and a forward voltage of 1.5 V at 2 A. It operates within a temperature range of -65°C to 175°C.
Feature Summary
- Provides stable voltage regulation across a broad range of voltages up to 200 V
- Capable of handling high-power dissipation of 10 W
- Designed for robust chassis or stud mounting applications
Applications
- High-power voltage regulation circuits
- Industrial power supply protection
- Military and aerospace electronic systems
Procurement Notes
Verify the specific manufacturer source, as this component has been produced by multiple entities including Microsemi and Digitron. Confirm that the received part matches the required qualification level (Commercial, JAN, JANTX, or JANTXV) if applicable to your design. Ensure the package type is correctly identified as DO-213AA/DO-4 for proper mechanical integration.
Selection Notes
Select this component when a 25 V reference with 10 W power handling is required in a stud-mount configuration. Consider the ±5% tolerance and 6 Ohm impedance for precision requirements. Evaluate thermal management needs given the 10 W rating and operating temperature range up to 175°C. Compare against other voltages in the 1N2970B–1N3015B series if different regulation values are needed.
Part Context
The 1N2987B belongs to the JEDEC registered 1N2970B through 1N3015B series of 10 W Zener diodes. This family offers voltage regulation values ranging from 3.9 V to 200 V. The series is available in commercial versions and qualified levels such as JAN, JANTX, and JANTXV, providing options for various reliability and environmental standards.
Replacement Considerations
Other parts in the 1N2970B–1N3015B series may serve as substitutes if the voltage rating differs but power and package constraints remain similar. Verify compatibility with existing qualification requirements, as military-grade variants (JAN/JANTX) may have stricter testing criteria than commercial equivalents.
