Diodes Incorporated DDZ9700Q-7

Overview

DDZ9700Q-7 from Diodes Incorporated is a surface-mount, low-current, AEC-Q101 qualified Zener diode in SOD123 package, with nominal zener voltage 13 V (min 12.35 V, max 13.65 V), 50 µA test current, 9.8 V reverse voltage rating at 0.05 µA leakage, and 500 mW power dissipation on FR-4 PCB at TL = +75°C. It is designed for precision voltage reference and overvoltage protection in automotive body control modules.

For engineers reviewing the DDZ9700Q-7 datasheet, DDZ9700Q-7 pinout, DDZ9700Q-7 application, or DDZ9700Q-7 equivalent, key selection criteria include its low-test-current zener regulation (50 µA), AEC-Q101 qualification, SOD123 thermal performance (RθJA = 340 °C/W), and tight 13 V ±5% tolerance - critical for battery-supplied sensor biasing and ECU power-rail clamping.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 13 V nominal zener voltage exhibits a positive temperature coefficient (~0.06 %/°C per Fig. 18), optimized for mid-range voltage regulation where thermal drift must be minimized without external compensation.

The device uses an alloy-42 leadframe with matte tin annealed finish, enabling reliable solderability per MIL-STD-202, Method 208. Its SOD123 package supports automated placement and provides 150 °C/W junction-to-lead thermal resistance, making it suitable for thermally constrained automotive PCB layouts with limited copper area.

Key Specifications

Pinout & Package

DDZ9700Q-7 is a two-terminal SOD123 packaged Zener diode. The cathode is marked by a band on the case; the anode is unmarked. No internal circuitry or multi-pin functionality exists - terminal roles are strictly defined by polarity-dependent conduction behavior.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C13-7-F and MMSZ4687T1G, DDZ9700Q-7 uniquely combines AEC-Q101 qualification, 50 µA low-current regulation, and 500 mW FR-4-rated dissipation - making it the only choice for automotive-grade, battery-sensitive voltage references requiring long-term parametric stability.

Availability

DDZ9700Q-7 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and portable medical diagnostics requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot history.

Supply support for DDZ9700Q-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 DDZ9xxxQ series belongs to Diodes' automotive-qualified Zener portfolio, engineered specifically for robust voltage reference and transient suppression in harsh-environment ECUs, meeting IATF 16949 process controls and PPAP documentation requirements.

FAQ

What is the maximum operating temperature for DDZ9700Q-7 in automotive applications?

The device is rated for junction temperatures from –65°C to +150°C and has been validated per AEC-Q101 for operation at ambient temperatures up to +125°C in engine compartment environments. Its thermal resistance values (R_θJA = 340 °C/W, R_θJL = 150 °C/W) allow safe operation when mounted on standard FR-4 with recommended pad layout and airflow.

Is DDZ9700Q-7 compatible with lead-free reflow profiles?

Yes - DDZ9700Q-7 features matte tin annealed terminals over alloy-42 leadframe and is fully RoHS 3 compliant (2015/863/EU). It meets JEDEC J-STD-020 moisture sensitivity Level 1 and is qualified for standard Pb-free reflow profiles up to 260°C peak temperature, with no pre-bake required.

How does the 50 µA test current affect circuit design?

The 50 µA I_ZT means the diode achieves its specified V_Z at just 50 µA reverse current - enabling use in high-impedance bias networks where traditional 5 mA Zeners would overload the source. Designers must ensure minimum bias current ≥50 µA for regulation, and account for leakage (≤0.05 µA at 9.8 V) in ultra-low-power sleep modes.

Does DDZ9700Q-7 have a specified zener impedance?

While not explicitly tabulated in DS30410 Rev. 17–2, Figure 13 shows typical zener impedance for DDZ9699–DDZ9705 at ~13 V is approximately 450 Ω at 1 mA and decreases to ~220 Ω at 10 mA. This value reflects dynamic resistance in the breakdown region and impacts regulation accuracy under varying load currents.