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1N4748AHR1G
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Product Detailed Parameters
- Description：DIODE ZENER 22V 1W DO204AL
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：22 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：23 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 16.7 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 1N4748AHR1G is a 22V Zener diode manufactured by Taiwan Semiconductor. It features a nominal reference voltage of 22V with a 5% tolerance and a maximum power dissipation of 1W. The device utilizes a DO-41 axial lead package and operates within a temperature range of -55°C to +150°C. Key electrical characteristics include a test current of 3.3mA, a maximum reverse leakage current of 5µA, and a Zener impedance of 175 Ohms. It holds AEC-Q101 qualification for automotive applications.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- Glass passivated junction for enhanced stability
- Built-in strain relief in the DO-41 package
Applications
- Voltage regulation in automotive electronic circuits
- Protection against voltage transients in vehicle systems
- Reference voltage sources in automotive instrumentation
Procurement Notes
Verify the specific suffix HR1G to confirm reel packaging and AEC-Q101 automotive qualification status. Ensure the component matches the required 22V Zener voltage and 1W power rating for your design. Confirm RoHS compliance details directly with the manufacturer or authorized distributor documentation before finalizing procurement.
Selection Notes
Select this component when an automotive-grade Zener diode with a 22V breakdown voltage is required. The 1W power rating and DO-41 package suit through-hole designs needing robust transient protection. Consider the 175 Ohm impedance and 5µA leakage current for precision reference applications in harsh thermal environments up to 150°C.
Part Context
This part belongs to the 1N47xx series of glass-passivated silicon Zener diodes from Taiwan Semiconductor. The series offers various voltage ratings in the DO-41 package. The 'HR1G' suffix typically indicates tape-and-reel packaging and specific automotive qualification, distinguishing it from standard bulk-packaged variants.
Replacement Considerations
Cross-reference with other manufacturers' 1N4748A parts. Verify that substitute components meet the same AEC-Q101 automotive grade, 1W power dissipation, and DO-41 package dimensions. Ensure the replacement maintains the 22V nominal voltage and 5% tolerance specifications.
