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1N4685 (DO35)
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Product Detailed Parameters
- Description：DIODE ZENER 3.6V 500MW DO204AH
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：3.6 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：7.5 µA @ 2 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
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Overview
The Microsemi Corporation 1N4685 is a silicon unidirectional voltage regulator diode housed in a DO-35 glass axial-lead package. It provides a nominal Zener voltage of 3.6 V with a maximum power dissipation rating of 0.5 W at +50°C. The device features a double slug construction and metallurgical bonding for enhanced reliability. It operates within a temperature range of -65°C to +175°C, supporting storage conditions across the same span. The component utilizes a low operating current design suitable for precision regulation applications.
Feature Summary
- Double slug type construction for structural integrity
- Metallurgically bonded internal connections
- Hermetically sealed glass encapsulation
Applications
- Voltage regulation circuits
- Reference voltage generation
- Overvoltage protection
Procurement Notes
Verify the specific manufacturer source when procuring this component, as multiple vendors including CDI-Diode and ON Semiconductor produce identical JEDEC part numbers. Confirm whether the unit includes an internal metallurgical bond suffix if required by the design specification. Ensure the package matches the DO-35 or DO-204AH standard before integration into the assembly process.
Selection Notes
Select this component for applications requiring a stable 3.6 V reference point with moderate power handling capabilities. The DO-35 package offers a compact form factor suitable for through-hole mounting. Consider the operating temperature range and power derating requirements when designing the thermal management strategy for the final assembly.
Part Context
This device belongs to the 1N4678 series of 500 mW glass Zener diodes. The series covers a wide voltage range from 1.8 to 200 volts. These components are widely used in general-purpose electronics for voltage clamping and regulation tasks due to their standardized packaging and reliable performance characteristics.
Replacement Considerations
Equivalent parts include the CDI-Diode 1N4685 and ON Semiconductor 1N4685CTA. Verify package compatibility and electrical tolerances before substitution.
