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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 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 AZ23C18-HE3-08 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It features a dual common anode configuration with a nominal Zener voltage of 18 V and a tolerance of ±5%. The device operates within a junction temperature range of -55 °C to +150 °C and provides an ESD capability exceeding 8 kV via the human body model. Electrical characteristics include a maximum reverse leakage current of 50 μA at 14 V and a dynamic resistance of 45 Ω at a test current of 5 mA.
Feature Summary
- Dual common anode configuration for integrated circuit protection
- ESD protection rated above 8 kV (HBM) per AEC-Q101 standards
- Silicon planar construction ensuring high reliability
Applications
- Voltage reference applications requiring dual polarity or split supplies
- Input/Output (I/O) protection against electrostatic discharge events
- Clamping circuits in automotive electronic modules
Procurement Notes
Verify that the ordering suffix matches the required tape and reel specifications. Confirm whether the specific application demands the HE3_A variant for formal AEC-Q101 qualification. Ensure the component meets RoHS compliance requirements before finalizing procurement orders.
Selection Notes
Select this part when a dual common anode Zener array is required in a compact SOT-23 footprint. Verify that the 18 V nominal voltage aligns with the target clamping threshold. Check if the ±5% tolerance is sufficient for the specific circuit design constraints.
Part Context
This component belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers various voltage grades according to the E24 standard and is available in both commercial and automotive qualified versions.
Replacement Considerations
AZ23C18-E3-08
FAQ
What is the ESD protection rating for the AZ23C18-HE3-08?
The device has an ESD capability exceeding 8 kV according to the Human Body Model (HBM) and exceeds 800 V according to the Machine Model (MM), as specified under AEC-Q101.
What is the internal configuration of the AZ23C18-HE3-08?
The device contains two Zener diodes connected in a common anode configuration within a single SOT-23 package.
What is the maximum operating junction temperature?
The maximum operating junction temperature (Tj) is 150 °C.
