AZ23B39-E3-18

Overview

The AZ23B39-E3-18 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 39 V with a tight tolerance of ±2%. The device operates within a test current range of 2 mA to 5 mA and exhibits a maximum reverse leakage current of 0.05 µA at 29 V. Dynamic resistance is specified at a maximum of 87 Ω, while the temperature coefficient ranges from 10 to 12 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports power dissipation up to 300 mW on FR-4 boards 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 stable reference applications
• Robust ESD protection capability exceeding 8 kV via human body model standards
• RoHS-compliant commercial grade construction suitable for automated surface mount assembly

Applications

• Precision voltage reference circuits requiring dual regulated rails
• Overvoltage protection stages for sensitive input lines
• Clamping networks in signal conditioning interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape width and reel dimensions. Ensure that the component designation matches the exact electrical parameters required for the target design. Cross-reference the RoHS compliance status and material categorization details directly with the supplier before finalizing procurement orders.

Selection Notes

Select this variant when a strict ±2% voltage tolerance is mandatory for circuit accuracy. Confirm that the thermal management strategy accommodates the 300 mW dissipation limit on standard FR-4 substrates. Evaluate the dynamic resistance specifications to ensure they meet the noise and regulation requirements of the intended application environment.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes produced by Vishay Semiconductors. The series utilizes silicon planar technology and offers a wide range of standardized voltage options. The specific part number indicates a commercial grade device packaged in SOT-23 format, designed for general-purpose electronic applications where space efficiency and reliable voltage regulation are prioritized.

Replacement Considerations

AZ23B39-E3-08

FAQ

What is the maximum reverse leakage current for the AZ23B39-E3-18?

The maximum reverse leakage current is 0.05 µA when measured at a reverse voltage of 29 V.

How does the 'B' designation affect the voltage tolerance compared to the 'C' designation?

The 'B' designation indicates a tighter voltage tolerance of ±2%, whereas the 'C' designation corresponds to a standard tolerance of ±5%.

What is the recommended soldering peak temperature for this component?

The maximum peak soldering temperature is 260 °C, consistent with its Moisture Sensitivity Level 1 classification.