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1N4684 (DO35)
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Product Detailed Parameters
- Description：DIODE ZENER 3.3V 500MW DO204AH
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：3.3 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：7.5 µA @ 1.5 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 1N4684 is a silicon Zener voltage regulator diode designed for axial-lead applications. It features a nominal reference voltage of 3.3 V with a standard tolerance of 5%. The device operates within a power dissipation range up to 0.5 W and utilizes a glass DO-35 package. It supports an extended operating temperature range from -65 °C to 175 °C, ensuring reliability in demanding environments.
Feature Summary
- Provides stable voltage regulation using a single unidirectional Zener junction.
- Constructed with a hermetically sealed glass axial-lead package for environmental protection.
- Features internal metallurgical bonding options for enhanced mechanical stability.
Applications
- Precision voltage reference circuits
- Overvoltage protection stages
- Temperature-compensated bias networks
Procurement Notes
Verify the specific suffix (e.g., -1, E3) to confirm metallurgical bonding status and lead finish compliance. Ensure the selected variant matches the required hermetic sealing specifications for the target application environment. Cross-reference JEDEC codes to validate package dimensions against design constraints.
Selection Notes
Select this component when a low-voltage reference near 3.3 V is required in a ruggedized axial package. Consider the -1 suffix if internal metallurgical bonding is necessary for vibration resistance. Evaluate thermal management requirements given the 0.5 W power rating and high maximum operating temperature capability.
Part Context
This part belongs to the broader 1N46xx series of 0.5 W Zener diodes manufactured by Microsemi. These devices are widely used in military and aerospace electronics due to their robust construction and consistent performance characteristics across wide temperature ranges.
Replacement Considerations
Equivalent parts include the 1N4684 variants from other manufacturers offering identical 3.3 V ratings in DO-35 packages. Verify pinout compatibility and ensure replacement units meet the same hermetic sealing standards if required.
