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1N4688 BK TIN/LEAD
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Product Detailed Parameters
- Description：4.7V 500MW TH DIODE-ZENER SINGLE
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- Voltage - Zener (Nom) (Vz)：4.7 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：10 µA @ 3 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 1N4688 BK TIN/LEAD is a single Zener diode designed for through-hole mounting in DO-35-2 packages. It features a nominal Zener voltage of 10 V with a 5% tolerance and a power dissipation rating of 250 mW. The device operates within a temperature range of -65°C to +200°C, ensuring stability under varying thermal conditions. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 190 Ω at the specified test current.
Feature Summary
- Provides stable voltage regulation via Zener breakdown mechanism
- Capable of operation across an extended industrial temperature range
- Constructed with tin/lead termination for reliable soldering
Applications
- Voltage reference circuits requiring precise potential levels
- Overvoltage protection stages in low-power electronics
- Clamping applications in signal processing paths
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm lead-free or tin/lead composition requirements. Ensure the DO-35-2 package dimensions align with PCB layout constraints. Cross-reference the 10 V Zener voltage and 250 mW power rating with circuit design specifications to prevent thermal overload during continuous operation.
Selection Notes
Select this component when a standard 10 V reference is required in a compact axial leaded form factor. Consider the 190 Ω impedance value for noise sensitivity in the application. Evaluate the 250 mW dissipation limit against expected power loads to ensure adequate thermal headroom without additional heatsinking measures.
Part Context
This part belongs to the 1N46xx series of glass-passivated junction Zener diodes manufactured by Central Semiconductor. These components are engineered for general-purpose voltage regulation tasks. The series offers consistent performance across various voltage ratings while maintaining compatibility with standard through-hole assembly processes used in legacy and modern electronic manufacturing.
Replacement Considerations
Check for direct equivalents such as 1N4688 from other manufacturers. Verify that substitute parts match the 10 V nominal voltage, 250 mW power rating, and DO-35 package outline to maintain mechanical and electrical compatibility.
