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1N4744AH
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Product Detailed Parameters
- Description：DIODE ZENER 15V 1W DO204AL
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tape & Reel (TR)
- 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：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：-
- Grade：Automotive
- Qualification：AEC-Q101
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Overview
The Taiwan Semiconductor 1N4744AH is a single-channel Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 15 V with a tolerance of 5%. The device operates in the through-hole DO-41-2 package and dissipates up to 1 W of power. Key electrical characteristics include a maximum reverse leakage current of 5 uA, a Zener impedance of 14 Ohms, and a test current of 17 mA. It is qualified under AEC-Q101 standards and functions within an operating temperature range from -55 C to +150 C.
Feature Summary
- Provides stable voltage regulation with a nominal 15 V output and 5% tolerance.
- Engineered for automotive environments with AEC-Q101 qualification.
- Utilizes a robust DO-41-2 through-hole package for reliable mounting.
Applications
- Automotive electronic circuits requiring voltage reference stability
- General-purpose voltage regulation in industrial equipment
- Protection against overvoltage transients in DC power lines
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number 1N4744AH with official Taiwan Semiconductor documentation. Confirm that the specific suffix 'AH' corresponds to the intended packaging configuration, as variations exist across distributors. Ensure compliance with RoHS and REACH requirements relevant to your manufacturing region before finalizing procurement orders.
Selection Notes
Select this component when a 15 V regulation point is required in automotive or high-reliability contexts. The AEC-Q101 qualification ensures suitability for harsh environments. Compare the 1 W power dissipation and 14 Ohm impedance against circuit load requirements to ensure adequate performance margins during operation.
Part Context
This component belongs to the 1N47xxA series of silicon planar Zener diodes manufactured by Taiwan Semiconductor. The series offers various voltage options within the DO-41 package format. The 1N4744AH variant specifically targets regulated voltage applications where automotive reliability standards are mandated.
Replacement Considerations
Direct substitutes include other manufacturers' 1N4744A variants such as those from Microchip or Vishay. Verify pinout compatibility and thermal characteristics before substitution. Cross-reference datasheets to confirm equivalent Zener voltage and impedance values.
