Diodes Incorporated DDZ9682Q-7

Overview

DDZ9682Q-7 from Diodes Incorporated is a surface-mount, low-current Zener diode with nominal zener voltage 2.7 V (min 2.565 V, max 2.835 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, and specified at low test current of 50 µA - ideal for precision voltage reference and low-bias battery-powered circuits in automotive sensor interfaces.

For engineers reviewing the DDZ9682Q-7 datasheet, DDZ9682Q-7 pinout, DDZ9682Q-7 application, or DDZ9682Q-7 equivalent, this AEC-Q101 qualified SOD123 device offers verified thermal resistance (RθJA = 340 °C/W), tight zener voltage tolerance (±5%), and cathode-band polarity marking for reliable automated assembly and board-level voltage clamping.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its 2.7 V nominal zener voltage places it in the low-voltage reference range where temperature coefficient is near zero (≈ –0.02 %/°C), minimizing drift in portable and automotive environments.

Designed for low-power biasing, it delivers 1 µA maximum reverse leakage at VR = 1 V and supports forward conduction up to 10 mA with VF = 0.9 V. The SOD123 package enables high-density placement while maintaining thermal performance via optimized pad layout per Diodes' recommended footprint.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.01 g weight, cathode band marking, matte tin annealed terminals solderable per MIL-STD-202.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-current Zener diode applications.

Compared with BZX84-C2V7LT1G and MMSZ4677T1G, DDZ9682Q-7 uniquely combines AEC-Q101 qualification, 1 µA leakage, and ±5% tolerance - making it the only option qualified for automotive sensor reference and industrial battery-backed monitoring where long-term stability and supply-chain traceability are mandatory.

Availability

DDZ9682Q-7 is available at Aetrix Electronics and suitable for automotive cabin electronics, portable gas detection systems, and industrial IoT edge nodes requiring stable component supply with full traceability and lifecycle continuity.

Supply support for DDZ9682Q-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, manufacturing, and distribution operations across Asia, Europe, and the Americas.

The DDZ9678–DDZ9717 series was developed specifically for automotive and industrial applications demanding high-reliability, low-leakage Zener references in compact SOD123 packages - emphasizing AEC-Q101 compliance, tight voltage tolerance, and green material content.

FAQ

What is the maximum reverse voltage (VR) at which DDZ9682Q-7 guarantees ≤1 µA leakage?

DDZ9682Q-7 guarantees ≤1 µA reverse leakage current at VR = 1 V, as specified in the Electrical Characteristics table. This value is measured at TA = +25°C using short-duration pulse testing to minimize self-heating effects. At higher VR values (e.g., 2 V), leakage increases nonlinearly and must be evaluated from Fig. 21 in the datasheet.

Is DDZ9682Q-7 compatible with lead-free reflow soldering processes?

Yes - DDZ9682Q-7 is fully RoHS 3 compliant and rated for lead-free reflow profiles up to 260°C peak temperature. Its matte tin annealed terminals meet MIL-STD-202 Method 208 solderability requirements, and its SOD123 package passes J-STD-020 moisture sensitivity Level 1, eliminating bake requirements prior to assembly.

How does the temperature coefficient of DDZ9682Q-7 compare to higher-voltage Zeners in the same family?

At 2.7 V nominal, DDZ9682Q-7 exhibits a temperature coefficient near –0.02 %/°C (per Fig. 17), placing it in the "zero-TC" region typical of low-voltage Zeners. This is significantly more stable than higher-voltage variants like DDZ9699 (12 V, +0.08 %/°C) and avoids the positive drift common above 5.6 V, making it preferred for precision low-voltage references.

Can DDZ9682Q-7 be used as a forward-biased voltage reference?

No - DDZ9682Q-7 is not characterized or specified for forward-bias operation as a reference. Its forward voltage (VF = 0.9 V @ IF = 10 mA) has no tight tolerance or temperature stability specification. It is engineered exclusively for reverse-bias zener breakdown operation; forward conduction is only relevant for ESD protection or polarity verification.