AZ23B33-HE3_A-18

Overview

The AZ23B33-HE3_A-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 33 V with a tight tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and provides an ESD protection capability exceeding 8 kV via the human body model. Qualified under AEC-Q101 standards for automotive applications, it delivers a maximum power dissipation of 300 mW on FR-4 boards and includes RoHS compliance.

Feature Summary

• Dual common anode configuration integrating two independent Zener elements into a single compact footprint
• AEC-Q101 qualification ensuring suitability for demanding automotive electronic environments
• High electrostatic discharge robustness providing reliable circuit protection against transient events

Applications

• Automotive-grade voltage reference circuits requiring precise dual-channel regulation
• ESD protection networks for sensitive signal lines in vehicle electronics
• Clamping applications in automotive control modules and sensor interfaces

Procurement Notes

Verify that the specific ordering suffix matches the required tape-and-reel quantity and packaging format. Confirm that the component carries the HE3_A designation to ensure AEC-Q101 automotive qualification status. Cross-reference the manufacturer's latest datasheet revision to validate current RoHS compliance and material categorization before finalizing procurement orders.

Selection Notes

Select this part when a dual common anode topology is required for space-constrained designs. The ±2% tolerance variant offers tighter voltage accuracy compared to standard commercial grades. Ensure the application environment remains within the specified operating temperature limits and that the thermal resistance characteristics align with the board layout constraints.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series utilizes silicon planar technology and covers a wide voltage range from 2.2 V to 75 V. The AZ23B33-HE3_A-18 specifically represents the 33 V breakdown voltage option with high precision tolerance and automotive reliability grading.

Replacement Considerations

AZ23B33-HE3-18

FAQ

What is the dynamic resistance of the AZ23B33-HE3_A-18 at the test current?

The maximum dynamic resistance (ZZ) at the test current of 2 mA is 80 Ohms.

How does the 'B' designation in the part number affect performance?

The 'B' indicates a tightened Zener voltage tolerance of ±2%, replacing the standard ±5% tolerance associated with the 'C' designation.

What is the maximum reverse leakage current specified for this device?

The maximum reverse leakage current is 50 µA when measured at a reverse voltage of 25 V.