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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 47V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：47 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 35 V
- Operating Temperature：-55°C ~ 150°C
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B47-HE3-08 is a dual common-anode silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It provides two independent voltage regulation channels with a nominal Zener voltage of 47 V and a tight tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 300 mW on an FR-4 board. It is AEC-Q101 qualified for automotive applications and features low reverse leakage current.
Feature Summary
- Dual-channel configuration with a common anode connection for simplified circuit design
- AEC-Q101 qualification ensuring reliability for demanding automotive environments
- High precision voltage regulation with a standard ±2% tolerance option
- ESD protection capability exceeding 8 kV via human body model standards
Applications
- Automotive electronic systems requiring precise voltage reference levels
- Multi-rail power supply architectures utilizing shared ground references
- Signal conditioning circuits needing stable bias voltages for multiple stages
Procurement Notes
Verify component authenticity by checking the manufacturer's marking code against official documentation. Confirm that the specific ordering suffix matches the required tape-and-reel packaging format. Ensure compliance with RoHS directives and material categorization requirements before finalizing procurement orders.
Selection Notes
Select this variant when a dual-channel solution with a common anode topology is required. The ±2% tolerance designation ensures tighter voltage accuracy compared to standard commercial grades. Verify that the 300 mW thermal dissipation rating aligns with the expected operating conditions on the target printed circuit board.
Part Context
This component belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltage values graded according to international E24 standards. The HE3_A suffix indicates AEC-Q101 qualification and lead-free construction.
Replacement Considerations
AZ23B47-E3-08
FAQ
What is the dynamic resistance of the AZ23B47-HE3-08?
The maximum dynamic resistance (ZZ) at the test current IZT1 is 97 Ohms.
How does the tolerance affect the Zener voltage range?
With a ±2% tolerance, the Zener voltage ranges from a minimum of 46.06 V to a maximum of 47.94 V at the nominal value of 47 V.
Is this component suitable for high-temperature automotive applications?
Yes, it is AEC-Q101 qualified and rated for an operating temperature range up to +150 °C.
