AZ23C7V5-HE3-18

Overview

The AZ23C7V5-HE3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a SOT-23 package. It features a nominal Zener voltage of 7.5 V with a ±5% tolerance and a test current of 5 mA. The device has a maximum reverse leakage current of 0.1 µA at 5 V and a dynamic resistance of 7 Ω at 5 mA. It operates within a temperature range of -55 °C to +150 °C and is AEC-Q101 qualified for automotive applications.

Feature Summary

• Dual common anode configuration for space-efficient circuit designs
• AEC-Q101 qualified for automotive reliability requirements
• ESD protection exceeding 8 kV (HBM) and 800 V (MM)
• RoHS compliant construction

Applications

• Automotive electronic circuits requiring voltage reference or clamping
• General-purpose voltage regulation in compact surface-mount layouts
• Protection against electrostatic discharge in sensitive signal lines

Procurement Notes

Verify the complete ordering code AZ23C7V5-HE3-18 matches the required specifications before procurement. Confirm that the HE3 suffix indicates AEC-Q101 qualification and RoHS compliance as specified by Vishay. Ensure the -18 suffix corresponds to the 10,000-unit reel packaging format. Cross-reference the datasheet revision date to confirm the electrical characteristics remain unchanged.

Selection Notes

Select this component when a dual common anode Zener array is needed in a SOT-23 footprint. The 7.5 V nominal voltage and ±5% tolerance suit standard reference applications. Verify that the 300 mW power dissipation on an FR-4 board meets the thermal requirements of the target circuit. Consider the -55 °C to +150 °C operating range for harsh environments.

Part Context

This part belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers various Zener voltages graded to the E24 standard. The 'C' designation indicates a 5% voltage tolerance, while 'B' denotes 2%. The HE3 suffix signifies AEC-Q101 qualification, distinguishing it from the commercial grade E3 variants.

Replacement Considerations

AZ23C7V5-E3-18 provides identical electrical characteristics but lacks AEC-Q101 automotive qualification. AZ23B7V5-HE3-18 offers tighter ±2% voltage tolerance with the same automotive qualification. Other manufacturers may offer pin-compatible SOT-23 dual Zener arrays, but specific electrical parameters must be verified for equivalence.