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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 20V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：20 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 15 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 AZ23C20-HE3-18 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 20 V and a tolerance of ±5%. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 500 mW (300 mW on FR-4). Electrical characteristics include a reverse leakage current of 50 µA at 17 V and a dynamic resistance of 50 Ω at a test current of 5 mA.
Feature Summary
- Dual common anode configuration for integrated circuit protection
- ESD capability exceeding 8 kV via human body model per AEC-Q101
- RoHS-compliant construction with halogen-free molding compound
Applications
- Voltage reference circuits requiring dual polarity regulation
- Transient voltage suppression in automotive electronics
- Over-voltage protection for sensitive input stages
Procurement Notes
Verify the specific suffix HE3_A against the ordering code table to confirm AEC-Q101 qualification status. Ensure the tape and reel quantity matches the required 10,000 units per reel specification. Cross-reference the RoHS compliance documentation to confirm material categorization standards before finalizing procurement orders.
Selection Notes
Select this component when a dual-channel Zener solution is required in a compact surface-mount footprint. The ±5% tolerance suits general-purpose applications where tighter precision is unnecessary. Verify that the 50 µA leakage current meets the system's quiescent power constraints.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide voltage range from 2.2 V to 75 V in the SOT-23 package. The HE3 variant indicates a specific manufacturing process compliant with environmental directives.
Replacement Considerations
AZ23C20-E3-18
FAQ
What is the dynamic resistance of the AZ23C20-HE3-18?
The dynamic resistance is specified as a maximum of 50 Ω at a test current of 5 mA.
Does the AZ23C20-HE3-18 meet automotive reliability standards?
Yes, devices with the HE3 suffix are AEC-Q101 qualified for automotive applications.
What is the maximum operating junction temperature?
The maximum junction temperature is 150 °C.
