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1N4702 (DO35)
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Product Detailed Parameters
- Description：DIODE ZENER 15V 500MW DO204AH
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：15 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 11.4 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Voltage - Forward (Vf) (Max) @ If：1.1 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microsemi Corporation 1N4702 is a silicon Zener diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-leaded package. It provides a nominal Zener voltage of 15V with a maximum power dissipation of 0.5W at 50°C. The device features metallurgically bonded construction and double slug type design, ensuring reliability under harsh conditions. Operating temperatures range from -65°C to +175°C, supporting high-temperature applications requiring stable voltage regulation.
Feature Summary
- Hermetically sealed glass construction for environmental protection
- Metallurgically bonded internal structure for enhanced durability
- Double slug type design for improved thermal performance
Applications
- Voltage regulation in high-reliability circuits
- Temperature compensated reference diodes
- Harsh environment electronic systems
Procurement Notes
Verify the specific suffix letter on the part number to confirm tolerance levels and screening requirements. Confirm RoHS compliance status as standard versions may not be compliant. Ensure the DO-35 package matches the PCB footprint. Check for military screening prefixes if required by the application specification.
Selection Notes
Select this component when a 15V Zener voltage is required in a compact axial package. Consider the 0.5W power rating and derating characteristics above 50°C. Evaluate the operating temperature range against system constraints. Verify that the hermetic seal meets the environmental standards of the target application.
Part Context
This component belongs to the 1N4678 series of 500mW Zener diodes manufactured by Microsemi. The series covers a wide voltage range using standardized JEDEC numbering. These devices are designed for general-purpose voltage regulation where size and reliability are critical factors in the circuit design.
Replacement Considerations
Equivalent parts include other manufacturers' 1N4702 variants in DO-35 packages. Verify electrical parameters such as Zener voltage tolerance and leakage current before substitution. Ensure the replacement maintains the same hermetic sealing and metallurgical bond construction.
