AZ23B4V3-E3-08

Overview

The AZ23B4V3-E3-08 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 4.3 V with a tight tolerance of ±2%. The device operates within a test current range of 1 to 5 mA and exhibits a maximum reverse leakage current of 3 µA at 3 V. Dynamic resistance is specified at 90 Ω, while the temperature coefficient ranges from -6 to -1 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports power dissipation up to 500 mW and functions across an operating temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact package
• Tight voltage tolerance of ±2% ensures high precision regulation performance
• Robust ESD protection capability exceeding 8 kV via human body model standards

Applications

• Precision voltage reference circuits requiring dual channels
• Over-voltage protection stages in sensitive signal paths
• Clamping applications for transient suppression in communication interfaces

Procurement Notes

Verify the specific suffix 'E3-08' during procurement to confirm the commercial grade RoHS-compliant variant packaged in 3000-unit reels on 8 mm tape. Confirm that the base part number matches the exact 4.3 V specification required for the design. Ensure compatibility with standard SMT reflow profiles as defined in the soldering conditions section of the datasheet.

Selection Notes

Select this component when a dual-channel solution is necessary to save board space compared to discrete single diodes. The ±2% tolerance makes it suitable for applications demanding tighter voltage accuracy than standard ±5% devices. Consider the negative temperature coefficient characteristics when designing circuits intended for wide ambient temperature variations.

Part Context

This device belongs to the AZ23 series of small signal silicon planar Zener diodes. The series offers a broad range of graded voltages from 2.2 V to 75 V according to the E24 standard. The 'B' designation specifically indicates the tighter ±2% tolerance band available within this product family.

Replacement Considerations

AZ23B4V3-E3-18

FAQ

What is the marking code for the AZ23B4V3-E3-08?

The marking code printed on the device body is DD6.

Does the AZ23B4V3-E3-08 have AEC-Q101 automotive qualification?

No, the 'E3' suffix denotes the commercial grade version. Automotive qualified versions utilize the 'HE3_A' suffix.

What is the dynamic resistance at the test current?

The dynamic resistance (ZZ) is specified as a maximum of 90 Ω at the test current IZT1.