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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：AZ23-G
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 V
- Operating Temperature：-55°C ~ 150°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B18-G3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23-G series, housed in a SOT-23 surface-mount package. It features a nominal Zener voltage of 18 V with a tight ±2% tolerance. The device operates at a test current of 5 mA and dissipates up to 300 mW on an FR-4 board. Electrical characteristics include a maximum reverse leakage current of 0.05 µA and a dynamic resistance of 45 Ω at 1 kHz. It supports an operating temperature range from -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration for space-efficient circuit design
- Tight ±2% Zener voltage tolerance for precision applications
- High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
- Green commercial grade construction compliant with RoHS standards
Applications
- Voltage reference circuits requiring precise dual rails
- ESD protection for sensitive signal lines
- Overvoltage clamping in low-power consumer electronics
Procurement Notes
Verify the specific ordering code suffix against project requirements. Confirm that the tape and reel packaging matches the intended automated assembly equipment specifications. Ensure compliance with material categorization definitions provided by the manufacturer for environmental regulations.
Selection Notes
Select this component when a dual Zener array with high voltage accuracy is required in a compact footprint. The ±2% tolerance distinguishes it from standard ±5% variants. Verify thermal management needs as power dissipation drops significantly above ambient temperatures.
Part Context
This part belongs to the AZ23-G series of small signal Zener diodes. The 'B' designation indicates the tighter voltage tolerance compared to the 'C' series. The '-G3' suffix denotes green commercial grade materials, while '-18' specifies the 10,000-unit reel packaging format.
Replacement Considerations
AZ23B18-E3-18
FAQ
What is the marking code for the AZ23B18-G3-18?
The marking code for this device is DF1.
How does the dynamic resistance vary for this part?
The dynamic resistance (ZZ) is specified at a maximum of 45 Ω when tested at the nominal current of 5 mA.
Is this component AEC-Q101 qualified?
AEC-Q101 qualification is available for this series, but the specific part number must be requested directly from the manufacturer.
