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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 56V SOT-23-3
- Series：AZ23
- Mfr：Vishay
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：56 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：135 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 42 V
- Operating Temperature：150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Vishay AZ23C56-G3-18 is a silicon planar Zener diode from the AZ23-G series, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates at a test current of 2 mA and dissipates up to 300 mW on an FR-4 board. Electrical characteristics include a maximum reverse leakage current of 50 μA at 42 V, a dynamic resistance (ZZ) of 135 Ω at 2 mA, and a temperature coefficient ranging from 9 to 11 x 10⁻⁴/°C.
Feature Summary
- Dual common anode configuration for efficient space-saving circuit designs
- ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
- Green commercial grade material composition compliant with RoHS directives
Applications
- Voltage reference circuits requiring stable regulation
- Overvoltage protection stages in signal conditioning paths
- Clamping applications in low-power electronic systems
Procurement Notes
Verify the specific ordering code suffix against the manufacturer's documentation to confirm reel size and minimum order quantity requirements. Ensure that the component selection aligns with the thermal management constraints defined for the SOT-23 package during assembly processes.
Selection Notes
Select this component when a 56 V regulation point is required within a compact footprint. Consider the ±5% tolerance and the specific dynamic resistance values to ensure compatibility with the target circuit's impedance matching and noise sensitivity requirements.
Part Context
This part belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of graded voltages from 2.2 V to 75 V, providing designers with standardized options for various voltage regulation needs across different industrial and consumer electronics applications.
Replacement Considerations
Direct substitutes within the same family include the AZ23B56-G3-18, which provides tighter ±2% voltage tolerance. Other manufacturers may offer equivalent specifications in the SOT-23 package, but verification of pinout orientation and electrical parameters is necessary.
FAQ
What is the marking code for the AZ23C56-G3-18?
The marking code assigned to the AZ23C56-G3-18 device is D73.
How does the power dissipation rating change based on mounting conditions?
The total power dissipation is rated at 500 mW when referenced to the leads, but it decreases to 300 mW when mounted on an FR-4 board using the recommended soldering footprint.
Is this component qualified for automotive applications?
AEC-Q101 qualification is available for this series, but it must be specifically requested from the manufacturer as it is not standard for all ordering codes.
