Diodes Incorporated DDZ9691Q-7

Overview

DDZ9691Q-7 from Diodes Incorporated is a surface-mount, low-current Zener diode in SOD123 package, rated for 6.2 V nominal zener voltage (5.89–6.51 V), 50 µA test current, and 500 mW power dissipation at TL = +75°C on FR-4 PCB. It features AEC-Q101 qualification, automotive-grade change control, and is optimized for precision voltage reference and low-bias regulation in battery-powered sensor nodes and automotive body electronics.

For engineers reviewing the DDZ9691Q-7 datasheet, DDZ9691Q-7 pinout, DDZ9691Q-7 application, or DDZ9691Q-7 equivalent, key selection criteria include its tight 5% zener voltage tolerance at 50 µA, 1 µA reverse leakage at 5 V, 150 °C/W junction-to-lead thermal resistance, and SOD123 footprint compatibility with automated placement systems.

Technical Context

This Zener diode operates in reverse breakdown mode to provide stable voltage reference with minimal bias current. Its 6.2 V nominal rating places it in the mid-range of the DDZ9678–DDZ9717 family, where temperature coefficient crosses zero near ±0.02 %/°C - enabling low-drift performance in ambient-temperature-stable circuits.

The device uses alloy-42 leadframe with matte tin annealed finish, ensuring solderability per MIL-STD-202 Method 208 and compatibility with lead-free reflow profiles. Its SOD123 case meets UL 94V-0 flammability rating and J-STD-020 Level 1 moisture sensitivity classification.

Key Specifications

Pinout & Package

Package: SOD123 - molded plastic case, cathode band marking, 0.01 g weight, UL 94V-0 rated, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V2-7-F and MMSZ4687T1G, DDZ9691Q-7 uniquely combines AEC-Q101 qualification, 1 µA leakage at 5 V, and 50 µA test current - making it optimal for automotive and ultra-low-power precision reference designs where both reliability and quiescent current matter.

Availability

DDZ9691Q-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical wearables, and smart home battery management systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for DDZ9691Q-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 North America.

The DDZ9678–DDZ9717 series belongs to Diodes' automotive-qualified Zener diode product line, designed specifically for precision voltage reference and low-current regulation in harsh-environment applications including body control, lighting, and sensor subsystems.

FAQ

What is the maximum operating temperature for DDZ9691Q-7?

The DDZ9691Q-7 has an operating temperature range of –65°C to +150°C. Its thermal resistance values (RθJA = 340°C/W, RθJL = 150°C/W) and 500 mW power rating are specified at TL = +75°C on FR-4 PCB with recommended pad layout - enabling reliable operation in under-hood automotive environments when properly mounted.

Is DDZ9691Q-7 compatible with lead-free reflow soldering?

Yes. The device uses a matte tin-annealed finish over alloy-42 leadframe and is fully RoHS 3 compliant. It meets MIL-STD-202 Method 208 solderability requirements and is qualified for standard Pb-free reflow profiles with peak temperatures up to 260°C, as verified per J-STD-020 Level 1 moisture sensitivity handling.

How does the 50 µA test current affect circuit design?

The 50 µA IZT means the diode achieves its specified zener voltage only when biased at that exact current. Designers must ensure series resistance delivers ~50 µA at expected supply voltage - e.g., a 100 kΩ resistor yields 50 µA at 5 V. Lower currents increase dynamic impedance; higher currents raise self-heating and voltage drift.

Does DDZ9691Q-7 have a defined zener impedance value?

While not explicitly tabulated in DS30410 Rev. 17, Figure 11 shows typical zener impedance for DDZ9691 (HK code) at ~6.2 V is approximately 120 Ω at 50 µA and 25°C. This value rises significantly below 10 µA and decreases slightly above 100 µA - critical for noise-sensitive reference applications requiring low AC impedance.