AZ23B12-HE3_A-08

Overview

The AZ23B12-HE3_A-08 is a silicon planar Zener diode array from the AZ23 series, manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in a SOT-23 surface-mount package. The nominal Zener voltage is 12 V with a tight tolerance of ±2%, indicated by the 'B' designation. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 9 V and a dynamic resistance of 20 Ω at a test current of 5 mA. The device is AEC-Q101 qualified for automotive applications and operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration for space-efficient circuit designs
• AEC-Q101 qualification ensuring reliability in automotive environments
• High ESD protection capability exceeding 8 kV via human body model
• Tight voltage tolerance of ±2% for precise regulation

Applications

• Automotive electronic circuits requiring robust voltage reference
• ESD protection stages in sensitive signal lines
• Precision voltage clamping and regulation tasks

Procurement Notes

Verify that the ordering code includes the HE3_A suffix to confirm AEC-Q101 automotive qualification. Ensure the B designation is present to guarantee the required ±2% voltage tolerance. Confirm the tape and reel packaging matches the specific quantity requirements for the production line.

Selection Notes

Select this component when a dual Zener array with high precision is needed in a compact footprint. The HE3_A variant is mandatory for projects requiring automotive-grade reliability standards. Compare against standard commercial grades if automotive certification is not a strict requirement for the application.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes. The series offers various voltage options graded according to the E24 standard. The HE3_A suffix specifically denotes RoHS compliance combined with AEC-Q101 qualification, distinguishing it from the commercial grade E3 variants.

Replacement Considerations

AZ23B12-E3-18: Commercial grade equivalent without automotive qualification.

FAQ

What does the 'B' indicate in the part number?

The 'B' indicates a Zener voltage tolerance of ±2%, which is tighter than the standard ±5% tolerance found in 'C' graded parts.

Is this component suitable for harsh automotive environments?

Yes, the HE3_A suffix confirms that the device is AEC-Q101 qualified and designed to withstand automotive operating conditions.

What is the maximum power dissipation on an FR-4 board?

The maximum power dissipation is 300 mW when mounted on an FR-4 board with the recommended soldering footprint.