Diodes Incorporated AZ23C2V7-7

Overview

AZ23C2V7 from Diodes Incorporated is a dual common-anode 300mW surface-mount Zener diode with nominal Zener voltage 2.7V (2.5–2.9V range), maximum Zener impedance 83Ω at 5mA, and temperature coefficient –0.065%/°C - used for precision voltage reference and overvoltage clamping in low-power analog sensor interfaces and microcontroller I/O protection circuits.

For engineers reviewing the AZ23C2V7 datasheet, AZ23C2V7 pinout, AZ23C2V7 application, or AZ23C2V7 equivalent, key selection criteria include dual-Zener matching (≤5% ΔV_Z), SOT23 package compatibility with automated assembly, JEDEC-qualified reliability, and reverse leakage <0.1µA at 2.5V.

Technical Context

This dual Zener operates in common-anode configuration: both cathodes are electrically isolated, sharing one anode terminal. It delivers matched breakdown characteristics across two diodes within a single SOT23 package, enabling compact dual-rail voltage regulation or bidirectional transient suppression.

Thermal resistance is 417°C/W (junction-to-ambient, FR-4 board), and it supports operation from –65°C to +150°C. The device meets AEC-Q101 (HBM ±8kV, MM ±400V) and IEC 61000-4-2 (±15kV air, ±8kV contact) ESD requirements.

Key Specifications

Pinout & Package

Package: SOT23 - molded plastic, green compound (UL 94V-0), matte tin-plated terminals, 0.008 g weight, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage reference applications.

Compared with BZX79-C2V7 and DZ23C2V7, AZ23C2V7 uniquely provides matched dual-Zener performance in a surface-mount common-anode configuration - essential for compact, automated, and symmetric voltage reference designs where pin-for-pin polarity alignment matters.

Availability

AZ23C2V7 is available at Aetrix Electronics and suitable for microcontroller I/O protection, low-voltage sensor reference, and automotive body control module applications requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant sourcing.

Supply support for AZ23C2V7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, application-optimized components for automotive, industrial, and computing markets.

AZ23C2V7 belongs to the AZ23 dual-Zener family designed specifically for space-constrained, high-volume applications demanding matched voltage references and automated assembly compatibility in SOT23 packaging.

FAQ

What is the maximum continuous Zener current for AZ23C2V7 at 25°C?

The maximum continuous Zener current is derived from its 300 mW power rating and nominal 2.7 V Zener voltage: I_Z(max) = 300 mW / 2.7 V ≈ 111 mA. However, thermal derating applies above 25°C - at 100°C ambient, usable current drops to ~60 mA per the published derating curve.

Can AZ23C2V7 be used as a bidirectional TVS for ESD protection?

No - AZ23C2V7 is not rated or characterized as a TVS device. Its 83 Ω Zener impedance and 300 mW dissipation limit its ability to absorb high-energy ESD pulses. It provides clamping only for low-energy transients; dedicated TVS diodes like PESD5V0S1BA are recommended for IEC 61000-4-2 compliance.

Is there a lead-free and halogen-free version of AZ23C2V7?

Yes - AZ23C2V7-7-F is the fully RoHS 3-compliant, halogen- and antimony-free ("Green") version, with <900 ppm bromine/chlorine and <1000 ppm antimony, as certified by Diodes Incorporated's material declarations and test reports.

How is the 5% ΔV_Z tolerance verified between the two Zeners?

ΔV_Z ≤ 5% is measured during final test at I_ZT = 5 mA on both diodes in the same package. Diodes Incorporated performs binning and screening to ensure matched units ship only when |V_Z1 – V_Z2| / V_Z(avg) ≤ 0.05 - confirmed per DS18003 Rev. 18 test methodology.