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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：27 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 18.9 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23C27-HE3_A-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 two independent Zener elements. The nominal Zener voltage is 27 V, with a tolerance of ±5%. Electrical characteristics are specified at a test current of 2 mA, yielding a maximum dynamic resistance of 80 Ω and a reverse leakage current of 50 nA. The device is AEC-Q101 qualified for automotive applications, operates within a temperature range of -55 °C to +150 °C, and supports a maximum power dissipation of 300 mW on an FR-4 board.
Feature Summary
- Dual common-anode Zener array architecture providing two independent voltage references in a single compact surface-mount package.
- AEC-Q101 qualification ensuring compliance with rigorous automotive reliability standards for junction temperature and electrical performance.
- ESD protection capability exceeding 8 kV via human body model and 800 V via machine model, enhancing robustness in sensitive circuit environments.
Applications
- Automotive electronic systems requiring AEC-Q101 compliant voltage regulation.
- Dual-channel reference voltage generation for analog signal processing circuits.
- Over-voltage protection stages utilizing common-anode topology.
Procurement Notes
Verify that the ordering code suffix matches the required tape-and-reel quantity and packaging format. Confirm that the HE3_A suffix correctly denotes AEC-Q101 qualification and RoHS compliance. Ensure the component meets specific automotive grade requirements before finalizing procurement orders.
Selection Notes
Select this part when a dual Zener array with a common anode is required for space-constrained designs. The ±5% tolerance suits general-purpose regulation, while the AEC-Q101 qualification makes it suitable for automotive electronics. Verify that the 2 mA test current aligns with the target circuit's operating conditions.
Part Context
This component belongs to the Vishay AZ23 series of small-signal Zener diodes. The series offers various voltage grades according to the E24 standard. The 'C' designation indicates a ±5% voltage tolerance, distinguishing it from the 'B' variant which provides tighter ±2% tolerance. The HE3_A suffix specifically identifies the AEC-Q101 qualified version.
Replacement Considerations
AZ23C27-HE3_A-08
FAQ
What is the dynamic resistance of the AZ23C27-HE3_A-18?
The maximum dynamic resistance (ZZ) at the test current of 2 mA is 80 Ω.
Is the AZ23C27-HE3_A-18 suitable for automotive applications?
Yes, the HE3_A suffix indicates that the device is AEC-Q101 qualified for automotive use.
What is the maximum reverse leakage current specified for this device?
The maximum reverse leakage current (IR) is 50 nA, measured at a reverse voltage of 20 V.
