AZ23C56-HE3_A-18

Overview

The Vishay AZ23C56-HE3_A-18 is a silicon planar Zener diode array configured as a dual common anode device. It operates within the AZ23 series, featuring a nominal Zener voltage of 56 V with a ±5 % tolerance (indicated by the 'C' suffix). The component is AEC-Q101 qualified for automotive applications and utilizes an SOT-23 surface-mount package. Electrical characteristics include a test current of 2 mA, a maximum reverse leakage current of 0.05 μA at 42 V, and a dynamic resistance of 135 Ω at the test current. The device supports a power dissipation of up to 500 mW on leads and 300 mW on an FR-4 board, operating across a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration integrating two Zener diodes in a single compact SOT-23 package.
• AEC-Q101 qualification ensuring compliance with automotive electronics reliability standards.
• High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model and 800 V via machine model.
• RoHS-compliant manufacturing utilizing the HE3_A suffix variant.

Applications

• Automotive electronic circuits requiring AEC-Q101 compliant voltage regulation.
• Dual-channel voltage reference or clamping applications in space-constrained designs.
• Protection against overvoltage transients in sensitive signal lines.

Procurement Notes

Verify that the ordering code matches the specific requirements for automotive grade components. Confirm the presence of the HE3_A suffix to ensure AEC-Q101 qualification and RoHS compliance. Check the datasheet for any recent product change notices regarding material categorization or manufacturing site updates before finalizing procurement specifications.

Selection Notes

Select this component when a dual Zener array is required in an SOT-23 footprint for automotive environments. Ensure the circuit design accommodates the specified 56 V nominal voltage and 135 Ω dynamic resistance. Verify that the thermal management strategy aligns with the 300 mW dissipation limit on standard FR-4 substrates to maintain junction temperatures within the safe operating area.

Part Context

This part belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers a wide range of graded voltages from 2.2 V to 75 V according to the E24 standard. The AZ23C56-HE3_A-18 specifically represents the 56 V variant with 5 % tolerance, packaged in reels of 10,000 units for high-volume surface mount assembly processes.

Replacement Considerations

Direct replacements must match the dual common anode configuration, 56 V nominal voltage, and SOT-23 package. Verify that alternative components meet AEC-Q101 automotive qualification standards if used in regulated automotive systems. Cross-reference dynamic resistance and leakage current specifications to ensure circuit performance compatibility.