AZ23C56-E3-08

Overview

The Vishay AZ23C56-E3-08 is a silicon planar Zener diode array configured as a common anode pair, housed in a surface-mount SOT-23 package. It provides a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates at a test current of 2 mA and features a maximum reverse leakage current of 50 nA at 42 V. Dynamic resistance is specified at 135 Ω (at IZT1) and 425 Ω (at IZT2). Power dissipation reaches 500 mW on lead clamping, while the operating temperature range spans from -55 °C to +150 °C.

Feature Summary

• Dual Zener diodes integrated into a single common anode configuration for space-efficient circuit designs
• Compliant with RoHS standards and manufactured using silicon planar technology
• Capable of withstanding electrostatic discharge exceeding 8 kV via human body model and 800 V via machine model

Applications

• Voltage reference circuits requiring dual independent regulated rails
• Overvoltage protection stages utilizing common ground topology
• Clamping networks for transient suppression in signal conditioning paths

Procurement Notes

Verify that the specific ordering code matches the required tolerance grade and AEC-Q101 qualification status. Confirm the tape and reel packaging dimensions align with automated assembly equipment specifications. Ensure the component meets all environmental compliance requirements mandated by the target market regulations before finalizing purchase orders.

Selection Notes

Select this component when a dual Zener solution sharing a common anode is necessary to minimize board space. Evaluate the dynamic resistance values against the noise sensitivity of the application. Consider the thermal resistance characteristics if the device will operate near its maximum power dissipation limits within enclosed enclosures.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes produced by Vishay Semiconductors. The series offers a wide range of standardized voltages from 2.2 V to 75 V. Variants are available with different tolerance grades and automotive qualifications to suit diverse industrial and commercial electronic applications.

Replacement Considerations

Direct substitutes include other Vishay AZ23 series parts with identical pinouts but different voltage ratings, such as AZ23C51-E3-08 or AZ23C62-E3-08. Cross-manufacturer replacements must match the SOT-23 footprint, common anode configuration, and electrical parameters precisely.

FAQ

What is the marking code for the AZ23C56-E3-08?

The marking code for this device is D73.

Does the AZ23C56-E3-08 have AEC-Q101 qualification?

No, the base E3 version is commercial grade. AEC-Q101 qualification is only available in the HE3_A variant.

What is the maximum reverse leakage current at 42 V?

The maximum reverse leakage current is 50 nA when tested at 42 V.