AZ23B22-E3-18

Overview

The AZ23B22-E3-18 is a dual common anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 22 V with a tight tolerance of ±2%. The device operates within a test current range of 2 to 5 mA and provides a maximum reverse leakage current of 0.05 µA at 17 V. Dynamic resistance is specified at 55 Ω, while the temperature coefficient ranges from 8 to 10 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports power dissipation up to 500 mW and functions reliably across an operating temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration providing two independent Zener channels in a single compact package
• High precision voltage grading with ±2% tolerance for applications requiring strict regulation accuracy
• Robust ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
• RoHS-compliant commercial grade construction without automotive qualification requirements

Applications

• Precision voltage reference circuits requiring stable dual supply rails
• Overvoltage protection stages for sensitive signal lines
• Clamping networks in high-speed digital interface protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape and reel specifications. Ensure that the component selection strictly aligns with the required voltage tolerance and thermal management parameters for the intended application environment.

Selection Notes

Select this variant when a tighter ±2% voltage tolerance is necessary compared to standard ±5% options. Confirm that the system design accommodates the specified dynamic resistance and leakage characteristics under expected operating temperatures and load conditions.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes. The 'B' designation indicates the ±2% tolerance grade, distinguishing it from the 'C' graded ±5% variants. The '-E3' suffix denotes RoHS compliance, while '-18' specifies the 10,000-unit reel packaging format.

Replacement Considerations

AZ23B22-E3-08

FAQ

What is the difference between the AZ23B22-E3-18 and AZ23C22-E3-18?

The primary difference is the voltage tolerance; the AZ23B22 offers a tighter ±2% tolerance, whereas the AZ23C22 provides a standard ±5% tolerance.

Is the AZ23B22-E3-18 qualified for automotive applications?

No, this specific part number is a commercial grade device. Automotive qualification requires the HE3_A suffix indicating AEC-Q101 compliance.

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

When mounted on an FR-4 board with the recommended soldering footprint, the maximum power dissipation is rated at 300 mW.