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1N4740A 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)：10 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：7 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 7.6 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 1N4740A BK TIN/LEAD is a single silicon Zener diode designed for through-hole mounting in the DO-41 axial leaded package. It provides a nominal Zener voltage of 10 V with a tolerance of ±5%. The device dissipates up to 1 W of power and operates within a junction temperature range of -65 °C to +200 °C. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 7 Ohms, and a test current of 25 mA.
Feature Summary
- Provides stable voltage regulation at a nominal 10 V level
- Capable of handling 1 W power dissipation in an axial leaded package
- Operates reliably across a wide temperature range extending to 200 °C
Applications
- Voltage reference circuits requiring stable DC levels
- Overvoltage protection stages in electronic systems
- General-purpose rectification and clamping applications
Procurement Notes
Verify the specific suffix BK TIN/LEAD against official datasheets to confirm lead composition and packaging format. Ensure the required voltage tolerance and power rating align with circuit design specifications before procurement. Confirm RoHS status and environmental compliance requirements with the manufacturer or authorized distributor.
Selection Notes
Select this component when a standard 10 V Zener voltage is required with high thermal stability. The DO-41 package supports through-hole assembly methods suitable for prototyping and robust industrial designs. Verify that the 1 W power rating meets the thermal management capabilities of the target application environment.
Part Context
This part belongs to the widely recognized 1N47xx series of Zener diodes manufactured by Central Semiconductor. These components are standardized for general-purpose voltage regulation tasks. The specific model utilizes tin-lead terminations and bulk packaging, distinguishing it from reel-based or lead-free variants within the same product family.
Replacement Considerations
Cross-reference with other manufacturers' 1N4740A equivalents to verify pinout compatibility and electrical parameter matching. Ensure substitute parts meet the same DO-41 package dimensions and thermal performance standards.
