Diodes Incorporated AZ23C5V1-7-F

Overview

AZ23C5V1-7-F from Diodes Incorporated is a dual common-anode 5.1 V Zener diode pair in SOT23 package, rated for 300 mW total power dissipation, with matched zener voltage tolerance ≤5% between elements and ±0.005 %/°C temperature coefficient. It provides precision voltage reference and overvoltage clamping in space-constrained DC bias networks, such as analog sensor signal conditioning circuits.

For engineers reviewing the AZ23C5V1-7-F datasheet, AZ23C5V1-7-F pinout, AZ23C5V1-7-F application, or AZ23C5V1-7-F equivalent, key selection criteria include dual-element matching, low thermal drift, SOT23 footprint compatibility, JEDEC-qualified reliability, and RoHS-compliant lead-free construction.

Technical Context

This dual Zener operates in reverse breakdown mode with two independent cathodes sharing one anode terminal. Each element is characterized at I_ZT = 5.0 mA, with typical zener impedance of 60 Ω (at 5 mA) and 480 Ω (at 1 mA), enabling stable regulation across moderate current variations.

The device exhibits a positive temperature coefficient of +0.005 %/°C at 5.1 V, minimizing output drift over -65°C to +150°C operating range. Thermal resistance R_θJA is 417 °C/W on FR-4 board with recommended pad layout, supporting reliable power handling up to 300 mW under defined PCB conditions.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal plastic molded case with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V1LT1G and DZ23C5V1-7-F, AZ23C5V1-7-F uniquely delivers matched dual 5.1 V references in a single common-anode configuration-enabling tighter bias tracking, reduced component count, and simplified layout for dual-channel analog systems.

Availability

AZ23C5V1-7-F is available at Aetrix Electronics and suitable for industrial sensor biasing, automotive CAN transceiver referencing, and medical instrumentation clamping requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AZ23C5V1-7-F 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 components for automotive, industrial, and computing markets.

AZ23C5V1-7-F belongs to the AZ23 series of dual Zener diodes, designed specifically for applications demanding matched voltage references in miniature surface-mount packages with AEC-Q101 qualification.

FAQ

What is the maximum continuous power dissipation per element in AZ23C5V1-7-F?

The AZ23C5V1-7-F is rated for 300 mW total power dissipation across both Zener elements. Since it uses a common-anode configuration with thermally coupled junctions, power must be allocated jointly-not per element-and derating follows the single curve in Figure 1. At 70°C ambient, usable power drops to ~225 mW total.

Can AZ23C5V1-7-F replace a single 5.1 V Zener in existing designs?

Yes, but only if the circuit connects the common anode to ground and uses one cathode as the active Zener node. The unused cathode must be left open or tied to the same potential-never shorted to anode or driven high. Pin 1 (anode) and Pin 2 (cathode A) replicate a standard SOT23 Zener; Pin 3 remains unconnected in single-node use.

Is AZ23C5V1-7-F suitable for use in AEC-Q200 passive component stress testing?

No-AZ23C5V1-7-F is qualified to AEC-Q101 (for discrete semiconductors), not AEC-Q200 (for passive components). Its qualification covers HBM/MM ESD, temperature cycling, and humidity testing per semiconductor standards, but it does not undergo the specific vibration, mechanical shock, or board flex tests required by Q200.

How does the +0.005 %/°C temperature coefficient affect long-term stability in precision references?

At +0.005 %/°C, the AZ23C5V1-7-F contributes approximately ±0.35 mV/°C drift around 5.1 V. Over a 100°C range (–25°C to +75°C), this yields ±35 mV total shift-acceptable for 12-bit systems (LSB ≈ 1.25 mV at 5 V) but insufficient for 16-bit precision without calibration. Matching between elements reduces differential drift to <±5 mV.