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1N4749A B0G
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Product Detailed Parameters
- Description：DIODE ZENER 24V 1W DO204AL
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：24 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：25 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 18.2 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：-
- Qualification：-
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Overview
The Taiwan Semiconductor Corporation 1N4749A B0G is a silicon unidirectional voltage regulator diode designed for general-purpose applications. It features a nominal Zener voltage of 24 V with a tolerance of 5 percent and a maximum power dissipation of 1 W. The device utilizes a DO-41 axial leaded package, suitable for through-hole mounting. Key electrical characteristics include a test current of 7.5 mA, a maximum reverse leakage current of 5 uA, and a dynamic impedance of 45 Ohms at the specified test conditions.
Feature Summary
- Glass passivated junction construction for enhanced stability
- Built-in strain relief mechanism within the package
- Low inductance design for improved switching performance
Applications
- Voltage regulation circuits
- Reference voltage sources
- Overvoltage protection stages
Procurement Notes
Verify the specific manufacturer designation as Taiwan Semiconductor Corporation against the component marking. Confirm the presence of the B0G suffix which may indicate specific packaging or lot coding variations. Ensure the DO-41 package dimensions and lead spacing match the target PCB footprint requirements before integration into the assembly process.
Selection Notes
Select this component when a standard 24 V regulation point is required with moderate precision. The 1 W power rating supports continuous operation in compact designs. Consider the 45 Ohm dynamic impedance for noise sensitivity requirements. The axial leaded format facilitates manual insertion or wave soldering processes compared to surface mount alternatives.
Part Context
This part belongs to the 1W glass passivated Zener diode series manufactured by Taiwan Semiconductor. The series offers various voltage options within the DO-41 package. The 1N4749A variant specifically targets the 24 V market segment. The B0G suffix typically denotes reel packaging specifications rather than altering the core electrical functionality of the diode.
Replacement Considerations
Cross-reference with other manufacturers offering 1N4749A specifications in DO-41 packages. Verify that substitute parts maintain the 24 V nominal voltage, 5% tolerance, and 1 W power dissipation limits. Ensure the replacement device meets the same thermal and mechanical constraints.
