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1N4743A BK TIN/LEAD
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Product Detailed Parameters
- Description：TH DIODE-ZENER SINGLE: STANDARD
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- Voltage - Zener (Nom) (Vz)：13 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：10 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 9.9 V
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N4743A BK TIN/LEAD is a single silicon Zener diode designed for through-hole mounting in the DO-41-2 axial leaded package. It provides a nominal Zener voltage of 62 V with a 5% tolerance and a maximum power dissipation of 1 W. The device features a low reverse leakage current of 5 uA and a Zener impedance of 125 Ohms at a test current of 4 mA. It operates reliably within a temperature range from -65 C to +200 C junction temperature.
Feature Summary
- Provides stable voltage regulation at a nominal 62 V with 5% tolerance
- Capable of handling 1 W power dissipation in a robust glass body
- Features low reverse leakage current for efficient standby operation
- Suitable for high-temperature environments up to 200 C
Applications
- Voltage reference circuits requiring 62 V stability
- Overvoltage protection for sensitive electronic components
- Clamping applications in power supply outputs
- General-purpose voltage regulation in industrial equipment
Procurement Notes
Verify the specific suffix BK TIN/LEAD against the manufacturer's latest datasheet to confirm lead material composition and plating specifications. Ensure the DO-41-2 package dimensions match your PCB footprint requirements. Confirm RoHS compliance status if required by your assembly standards, as tin/lead variants may differ from lead-free equivalents.
Selection Notes
Select this component when a precise 62 V regulation point is needed with moderate power handling capabilities. The DO-41 package offers mechanical stability for through-hole assembly. Consider the 125 Ohm impedance for dynamic load changes. Compare thermal resistance characteristics against alternative packages if space constraints exist or if higher density mounting is required.
Part Context
This part belongs to the standard 1N47xx series of 1 Watt Zener diodes, widely used for basic voltage regulation tasks. The 1N4743A designation specifically identifies the 62 V variant within this family. Central Semiconductor manufactures this component using established silicon planar technology, ensuring consistency with industry-standard electrical parameters for legacy and modern designs alike.
Replacement Considerations
Cross-reference with other manufacturers' 1N4743A parts such as those from onsemi or Nexperia. Verify that substitute components maintain the same 62 V Zener voltage, 1 W power rating, and DO-41 package outline to ensure direct compatibility without circuit redesign.
