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1N4703 BK TIN/LEAD
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Product Detailed Parameters
- Description：16V 500MW TH DIODE-ZENER SINGLE:
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- Voltage - Zener (Nom) (Vz)：16 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 12.1 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 1N4703 BK TIN/LEAD is a silicon unidirectional Zener diode designed for through-hole mounting in the DO-35 axial leaded package. It provides a nominal Zener voltage of 16 V with a tight tolerance of 2%. The component is rated for a maximum power dissipation of 0.5 W and operates within an extended temperature range from -65 °C to +200 °C junction temperature. It features a single configuration with two terminals, utilizing tin/lead plating for reliable soldering connections.
Feature Summary
- High thermal stability supporting operation up to 200 °C junction temperature
- Precision voltage regulation with 2% tolerance for critical reference applications
- Robust construction in standard DO-35 axial package for easy circuit integration
Applications
- Voltage reference circuits requiring stable DC levels
- Overvoltage protection in sensitive electronic systems
- Clamping applications in signal processing paths
Procurement Notes
Verify the specific ordering suffix matches the required lead finish and tolerance. Confirm that the 2% tolerance variant is explicitly requested, as standard versions may differ. Ensure the DO-35 package dimensions align with the target PCB footprint. Check RoHS compliance status if lead-free requirements are mandatory for the assembly process.
Selection Notes
Select this component when a precise 16 V reference is needed with tighter than standard 5% tolerances. The high maximum operating temperature makes it suitable for harsh environments where standard diodes might fail. Ensure the 0.5 W power rating accommodates the expected dissipation in the specific circuit design without exceeding thermal limits.
Part Context
This part belongs to the 1N47xx series of Zener diodes manufactured by Central Semiconductor. These components are widely used in general-purpose electronics for voltage regulation and protection. The 1N4703 specifically targets applications requiring higher precision than the common 5% tolerance variants offer.
Replacement Considerations
Direct replacements must match the 16 V Zener voltage, 0.5 W power rating, and DO-35 package. Verify that substitute parts also offer 2% tolerance if precision is critical. Ensure the replacement supports the same -65 °C to +200 °C operating temperature range.
