AZ23B3V9-HE3_A-18

Overview

The AZ23B3V9-HE3_A-18 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration within a SOT-23 surface-mount package. The nominal Zener voltage is 3.9 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 1 µA at 3 V and a dynamic resistance of 90 Ω at a test current of 5 mA. The device is AEC-Q101 qualified for automotive applications, operates within a temperature range of -55 °C to +150 °C, and has a maximum power dissipation of 300 mW on an FR-4 board.

Feature Summary

• Dual common anode Zener diode array in a compact SOT-23 package
• AEC-Q101 qualified for high reliability in automotive environments
• Tight voltage tolerance of ±2% for precise regulation
• ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)

Applications

• Voltage reference circuits requiring stable low-voltage regulation
• Protection of sensitive electronics against voltage transients
• Automotive electronic systems meeting AEC-Q101 standards

Procurement Notes

Verify the specific ordering code suffix to confirm the reel size and tape width. The '-18' suffix indicates units are supplied in reels of 10,000 on 8 mm tape. Confirm that the HE3_A designation matches the required AEC-Q101 qualification level for the target application environment.

Selection Notes

Select this component when a dual common anode configuration is required for space-constrained designs. The ±2% tolerance makes it suitable for precision applications compared to standard ±5% variants. Ensure the operating temperature range aligns with the system's thermal profile, as the device supports up to +150 °C junction temperature.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes from Vishay. The series offers a wide range of Zener voltages from 2.2 V to 75 V. The 'B' in the part number denotes the tighter ±2% voltage tolerance, while the 'HE3_A' suffix signifies RoHS compliance and AEC-Q101 automotive qualification.

Replacement Considerations

AZ23B3V9-E3-18: Commercial grade version without AEC-Q101 qualification.

FAQ

What is the marking code for the AZ23B3V9-HE3_A-18?

The marking code for this device is DD5.

What is the dynamic resistance of the AZ23B3V9-HE3_A-18?

The maximum dynamic resistance (ZZ) is 90 Ω, measured at a test current (IZT1) of 5 mA.

Is the AZ23B3V9-HE3_A-18 suitable for automotive applications?

Yes, the HE3_A suffix indicates that the device is AEC-Q101 qualified for automotive use.