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1N4744A
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Product Detailed Parameters
- Description：DIODE ZENER 15V 1W DO41G
- Series：-
- Mfr：Lumimax Optoelectronic Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：15 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：14 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 11.4 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 1N4744A is a silicon planar Zener diode housed in a JEDEC DO-41 glass package. It provides a nominal Zener voltage of 15V with a tolerance of ±5%. The device supports a maximum power dissipation of 1W and features a low Zener impedance of 14 Ohms maximum at the test current. It operates within a junction temperature range up to 200°C and includes a color band to denote the cathode end.
Feature Summary
- Glass passivated junction construction for enhanced reliability
- Low Zener impedance and low regulation factor
- High temperature soldering guaranteed at 260°C
Applications
- Voltage stabilization circuits
- Voltage reference applications
- Surge suppression protection
Procurement Notes
Verify the specific manufacturer lot and datasheet revision when sourcing, as component specifications may vary between original equipment manufacturers and secondary producers like Lumimax. Confirm that the DO-41 glass package matches your thermal and mechanical design requirements before finalizing procurement orders.
Selection Notes
Select this component for designs requiring a precise 15V reference point with moderate power handling capabilities. Ensure the circuit can accommodate the specified 14 Ohm maximum dynamic impedance to maintain stability. Verify that the axial lead spacing fits the target PCB layout constraints.
Part Context
This part belongs to the 1N47xxA series of 1-watt Zener diodes manufactured by Lumimax Optoelectronic Technology. The series covers a wide voltage range from 3.3V to 75V, all utilizing the standard DO-41 glass package. This specific model represents the 15V variant within that broader family.
Replacement Considerations
Compatible substitutes include the Vishay 1N4744A and STMicroelectronics 1N4744A. These parts share identical electrical ratings and the DO-41 package, allowing for direct pin-to-pin replacement in existing designs without circuit modification.
FAQ
What is the maximum reverse leakage current for the 1N4744A?
The maximum reverse leakage current is 5 µA, measured at a reverse voltage of 11.4 V.
How is polarity identified on the 1N4744A package?
Polarity is indicated by a color band printed on the glass body, which denotes the cathode end of the diode.
