AZ23B2V4-G3-18

Overview

The AZ23B2V4-G3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23-G series, housed in a SOT-23 surface-mount package. It provides two independent voltage regulation channels sharing a single anode terminal. The nominal Zener voltage is 2.4 V with a tight tolerance of ±2%. Electrical characteristics are defined at a test current of 5 mA, featuring a maximum reverse leakage current of 50 µA and a dynamic resistance of 100 Ω. The device supports a continuous power dissipation of 300 mW on standard FR-4 boards and operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration for space-efficient circuit design
• Tight voltage tolerance of ±2% for precision regulation applications
• High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
• Lead-free construction compliant with RoHS standards

Applications

• Precision voltage reference circuits requiring dual channels
• Input voltage clamping and protection stages
• Signal conditioning and waveform shaping networks
• Low-voltage regulator topologies in compact modules

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer's part number against official datasheets and authorized distributor catalogs. Confirm that the ordering suffix matches the required tape-and-reel packaging specifications. Ensure compliance with environmental directives such as RoHS before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel voltage reference with high accuracy is required in a minimal footprint. The ±2% tolerance distinguishes it from standard ±5% variants. Verify that the low nominal voltage of 2.4 V aligns with the specific regulation requirements of the target application circuit.

Part Context

This device belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltage values in the compact SOT-23 package. The 'B' designation indicates the tighter ±2% voltage tolerance grade compared to the standard 'C' grade.

Replacement Considerations

AZ23B2V4-E3-18

FAQ

What is the marking code for the AZ23B2V4-G3-18?

The marking code for this specific part number is DG9.

How does the thermal resistance affect power dissipation?

The junction-to-lead thermal resistance is 250 K/W, allowing up to 500 mW dissipation if leads are clamped. On an FR-4 board, the junction-to-ambient resistance limits continuous dissipation to 300 mW.

Is this component qualified for automotive applications?

The commercial grade AZ23B2V4-G3-18 is not explicitly listed as AEC-Q101 qualified in the provided documentation; qualification is available upon request for specific part numbers.