Diodes Incorporated DZL6V8AXV3-7

Overview

DZL6V8AXV3-7 from Diodes Incorporated is a dual-channel surface-mount Zener diode in SOT-523 package, rated for 6.8 V nominal Zener voltage at 5 mA, with ±5% tolerance (6.46–7.14 V), 15 Ω dynamic impedance, and 220 mW power dissipation - used for precision voltage regulation and overvoltage protection in space-constrained DC power rails.

For engineers reviewing the DZL6V8AXV3-7 datasheet, DZL6V8AXV3-7 pinout, DZL6V8AXV3-7 application, or DZL6V8AXV3-7 equivalent, key selection criteria include Zener voltage tolerance, low dynamic impedance at I_ZT, thermal resistance (625 °C/W), RoHS-compliant lead-free plating, and SOT-523 footprint compatibility with high-density PCB layouts.

Technical Context

This dual Zener diode integrates two identical 6.8 V Zener elements in a single ultra-small SOT-523 package, enabling compact bidirectional clamping or dual-rail reference generation. It operates within –65 °C to +150 °C and maintains stable breakdown characteristics up to 1.0 μA reverse leakage at 5.0 V.

The device uses alloy 42 leadframe with matte tin plating and green molding compound (UL 94V-0), supporting reflow soldering per MIL-STD-202. Its 16 kV HBM ESD rating ensures robustness in handling and assembly environments.

Key Specifications

Pinout & Package

SOT-523 is a 3-terminal ultra-small plastic package (1.6 mm × 0.8 mm × 0.6 mm) with gull-wing leads; terminals are anode-cathode-anode for dual Zener configuration. Polarity is marked with cathode band on top view.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V8LT1G and PDZ6.8B,115, the DZL6V8AXV3-7 uniquely delivers matched dual-Zener performance in SOT-523, enabling true bidirectional clamping with 15 Ω impedance - critical for high-accuracy reference and low-energy transient suppression where footprint and impedance matter.

Availability

DZL6V8AXV3-7 is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor reference design, and low-power IoT node regulation requiring stable component supply across extended production cycles.

Supply support for DZL6V8AXV3-7 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The DZL series targets ultra-compact voltage regulation and ESD-hardened clamping for portable and automotive electronics, emphasizing miniaturization, reliability, and green compliance without sacrificing electrical performance.

FAQ

What is the maximum reverse voltage the DZL6V8AXV3-7 can withstand before breakdown?

The DZL6V8AXV3-7 exhibits sharp Zener breakdown at 6.8 V nominal (6.46–7.14 V range) when reverse biased at I_ZT = 5 mA. Below 5.0 V reverse bias, leakage remains ≤1.0 μA. It is not rated for sustained operation above its specified Zener voltage - exceeding 7.14 V risks thermal runaway unless current is strictly limited by external series resistance.

Can the DZL6V8AXV3-7 be used as a standalone voltage reference in precision analog circuits?

Yes, but with constraints: its 1.2–4.5 mV/°C temperature coefficient and 15 Ω dynamic impedance make it suitable for moderate-accuracy references (e.g., 10–12 bit ADCs) where ambient temperature stays within 0–70 °C. For sub-1 LSB drift, add a low-pass RC filter and avoid driving capacitive loads >100 pF to prevent instability.

How does the SOT-523 package affect thermal performance in continuous operation?

With R_θJA = 625 °C/W, the DZL6V8AXV3-7 reaches junction temperatures ~138 °C at full 220 mW dissipation in still air. Derating begins at 25 °C ambient: power must reduce linearly to zero at 150 °C case temperature. Use ≥25 mm² of 1-oz copper pour under the pad to improve heat spreading and sustain >150 mW continuously.

Is the DZL6V8AXV3-7 suitable for automotive applications per AEC-Q101?

No - while Diodes Incorporated qualifies many Zeners to AEC-Q101, the DZL6V8AXV3-7 is not listed in their qualified parts database (QPD) and lacks stress test documentation for automotive temperature cycling, humidity, or mechanical shock. For automotive use, specify the AEC-Q101-qualified DZL6V8XV3-7 variant instead.