AZ23B33-G3-08

Overview

The AZ23B33-G3-08 is a silicon planar Zener diode from Vishay's AZ23-G series, housed in an SOT-23 package. It features a nominal Zener voltage of 33 V with a tight ±2 % tolerance, indicated by the 'B' suffix. The device operates at a test current of 2 mA and dissipates up to 500 mW. Key electrical parameters include a reverse leakage current of 50 µA maximum at 40 V and dynamic resistance values of 80 Ω at IZT1 and 250 Ω at IZT2. It offers high ESD protection exceeding 8 kV (HBM) and 800 V (MM), ensuring robust performance in sensitive circuits.

Feature Summary

• Silicon planar construction for reliable voltage regulation
• High electrostatic discharge immunity per AEC-Q101 standards
• Green commercial grade material composition

Applications

• Voltage reference circuits requiring precise tolerance
• Overvoltage protection stages in signal conditioning
• Clamping applications in portable electronic devices

Procurement Notes

Verify the specific ordering code AZ23B33-G3-08 against official Vishay documentation to confirm the ±2 % tolerance grade and SOT-23 packaging. Ensure compatibility with standard surface-mount reflow soldering profiles, as the component is rated for peak temperatures up to 260 °C. Confirm that the application environment remains within the specified operating temperature range of -55 °C to +150 °C for optimal reliability.

Selection Notes

Select this component when a 33 V Zener voltage with strict ±2 % accuracy is required in a compact SOT-23 footprint. The low test current of 2 mA makes it suitable for battery-powered designs where minimizing quiescent power consumption is critical. Consider the thermal resistance characteristics if the circuit involves significant pulsed power dissipation or elevated ambient temperatures.

Part Context

This part belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series covers a wide voltage range from 2.2 V to 75 V, utilizing standardized E24 grading. The 'G3' suffix denotes compliance with green manufacturing standards, while the '08' indicates tape-and-reel packaging on a 7-inch reel for automated assembly processes.

Replacement Considerations

Direct substitutes within the same Vishay family include other AZ23B33 variants with different packaging options, such as the AZ23B33-G3-18 for 13-inch reels. Cross-manufacturer replacements must match the 33 V nominal voltage, ±2 % tolerance, SOT-23 package dimensions, and equivalent dynamic resistance and leakage specifications.