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1N4685 BK TIN/LEAD
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Product Detailed Parameters
- Description：3.6V 500MW TH DIODE-ZENER SINGLE
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- 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 ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 100 mA
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N4685 BK TIN/LEAD is a unidirectional voltage regulator diode constructed from silicon. It features a DO-35 glass axial leaded package with a maximum power dissipation of 0.5 W at +50°C. The device provides a nominal Zener voltage of 3.6 V and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a maximum forward voltage of 1.1 V at 200 mA and low operating current capabilities, making it suitable for precision regulation applications.
Feature Summary
- Utilizes double plug construction for enhanced structural integrity
- Features metallurgically bonded internal elements
- Designed for low operating current applications
Applications
- Precision voltage reference circuits
- Low current voltage regulation
- General purpose clipping and clamping
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm lead-free status or tin/lead plating variations. Confirm that the DO-35 package dimensions match your PCB footprint requirements. Ensure thermal derating calculations account for the specified 4 mW per degree Celsius reduction above +50°C ambient temperature.
Selection Notes
Select this component when a stable 3.6 V reference is required in a small axial package. Consider the 0.5 W power rating and -65°C to +175°C operating range for environmental suitability. Evaluate the low leakage and impedance characteristics if signal integrity is critical in the design.
Part Context
This part belongs to the standard 1N4678 through 1N4717 series of Zener diodes manufactured by CDI-Diodes (Central Semiconductor). These devices are widely recognized for their reliability in general-purpose electronic circuits. The 1N4685 specifically targets the 3.6 V segment of this extensive voltage lineup.
Replacement Considerations
Cross-reference with other manufacturers offering the 1N4685 designation in DO-35 packages. Verify that substitute parts meet the same 3.6 V nominal voltage, 0.5 W power dissipation, and temperature range specifications.
