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1N4740A
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Product Detailed Parameters
- Description：DIODE ZENER 10V 1W DO41G
- Series：-
- Mfr：Lumimax Optoelectronic Technology
- Package：Bulk
- 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
- 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 Lumimax Optoelectronic Technology 1N4740A is a Zener diode featuring a 10V nominal voltage with ±5% tolerance. It operates within a power dissipation rating of 1W and maintains a maximum impedance of 7 Ohms. The device supports a junction temperature up to 200°C and withstands storage temperatures from -65°C to +200°C. Electrical characteristics include a forward voltage of 1.2V at 200mA and reverse leakage current of 10µA at 7.6V.
Feature Summary
- Glass passivated junction construction
- Low Zener impedance for stable regulation
- High temperature soldering capability
Applications
- Voltage regulation circuits
- Reference voltage sources
- Overvoltage protection
Procurement Notes
Verify the manufacturer designation matches Lumimax Optoelectronic Technology, as this part number is widely produced by multiple semiconductor vendors. Confirm the package type is DO-41 glass molded body and check RoHS compliance status against specific ordering requirements. Ensure the electrical parameters align with the official datasheet specifications before finalizing procurement.
Selection Notes
Select this component when a 10V reference with tight tolerance is required in through-hole designs. Consider the thermal resistance and maximum operating temperature limits for high-temperature environments. Evaluate the low impedance characteristic for applications demanding precise voltage stability under varying load conditions.
Part Context
This component belongs to the 1N47xxA series of Zener diodes manufactured by Lumimax Optoelectronic Technology. The series covers a broad voltage range from 3.3V to 75V, all utilizing the standard DO-41 glass package. This specific model represents the 10V variant within that standardized lineup.
Replacement Considerations
Cross-reference with other manufacturers' 1N4740A parts to ensure pinout and electrical parameter compatibility. Verify package dimensions and lead spacing match existing board layouts. Check for equivalent suffixes indicating different tolerances or packaging formats.
