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Diodes Incorporated DDZ9708Q-7
- Part No.:
- DDZ9708Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9708Q-7.pdf
- Description:
- DIODE ZENER 22V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,429
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Product details
Overview
DDZ9708Q-7 from Diodes Incorporated is a surface-mount, low-current, AEC-Q101 qualified Zener diode in SOD123 package, with nominal zener voltage 22 V (min 20.9 V, max 23.1 V), 50 µA test current, and 500 mW power dissipation at TL = +75°C on FR-4 PCB. It delivers stable voltage reference in automotive body control modules and portable battery-powered sensor interfaces where low-bias operation and thermal reliability are critical.
For engineers reviewing the DDZ9708Q-7 datasheet, DDZ9708Q-7 pinout, DDZ9708Q-7 application, or DDZ9708Q-7 equivalent, this page provides verified electrical characteristics, SOD123 terminal mapping, automotive-grade qualification status, and real-world design context for low-power voltage regulation and overvoltage protection circuits.
Technical Context
This device operates as a two-terminal, cathode-banded, silicon planar Zener diode optimized for precision low-current regulation. Its breakdown behavior is characterized at 50 µA test current, enabling accurate voltage clamping in micro-power standby modes and low-leakage bias networks.
Thermal performance is defined by RθJL = 150 °C/W and RθJA = 340 °C/W on standard FR-4 layout, supporting operation from –65 °C to +150 °C ambient. The device exhibits a positive temperature coefficient of ~+0.07 %/°C near 22 V, confirmed in Fig. 18 of DS30410 Rev. 17–2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.9–23.1 V range at IZT = 50 µA - defines tight tolerance for reference stability in low-power analog monitoring. |
| Power Dissipation (PD) | 500 mW at TL = +75°C on FR-4 - supports continuous operation in thermally constrained automotive PCBs without forced cooling. |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 16.7 V - ensures minimal quiescent current draw in battery-backed systems. |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - enables predictable forward conduction for dual-purpose clamp/rectifier use cases. |
| Package | SOD123 - industry-standard 2-pin surface-mount outline (3.65 mm × 1.55 mm × 1.05 mm) compatible with automated pick-and-place and reflow. |
| Qualification | AEC-Q101 qualified, PPAP capable, manufactured in IATF 16949 certified facilities - meets automotive electronics reliability and traceability requirements. |
Pinout & Package
SOD123 package: molded plastic case (UL 94V-0), cathode band marking, matte tin annealed terminals over Alloy 42 leadframe, weight ≈ 0.01 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential node in reverse-bias regulation. | Provides low-resistance path for forward conduction; must be routed to ground or common return in shunt regulator topology. |
| Cathode | Current exit point in forward bias; connected to regulated voltage node in reverse-bias operation. | Terminal where zener breakdown occurs; marked with band; connects to supply rail needing voltage stabilization or overvoltage clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Low test current (50 µA) | Enables stable regulation in µA-level bias networks - critical for coin-cell and energy-harvesting applications. |
| 500 mW power rating on FR-4 | Delivers usable headroom for transient surges without derating beyond +75°C board temperature - simplifies thermal design in dense layouts. |
| AEC-Q101 qualification | Validates robustness against temperature cycling, humidity, mechanical shock, and ESD - required for under-hood and chassis-mounted ECUs. |
| Halogen- and antimony-free "Green" construction | Meets automotive OEM environmental mandates (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb) without compromising solderability or long-term reliability. |
Applications
| Automotive Body Control Module | Portable Gas Sensor Interface |
|---|---|
|
Use Scenario: Voltage reference for 12 V rail monitoring in door module MCU ADC input. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 22 V reference to scale down 12 V system voltage for precise measurement. Use Value: Maintains ±5% reference accuracy across –40 °C to +105 °C ambient while drawing <0.05 µA leakage at 16.7 V - extends battery life in sleep mode. |
Use Scenario: Bias voltage source for electrochemical CO sensor requiring stable 22 V excitation. IC Role / Device Role / Timing Role: Low-current Zener reference generating clean DC bias from a 24 V industrial battery pack. Use Value: Delivers 22 V ±0.6 V regulation at 50 µA with <0.1 °C/V tempco - reduces sensor offset drift by >40% vs. resistor-divider alternatives. |
| Industrial PLC Input Protection | Medical Wearable Power Monitor |
|
Use Scenario: Overvoltage clamp on 24 V digital input channel exposed to inductive switching transients. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting input voltage to 23.1 V peak during 100 ns spikes. Use Value: Absorbs up to 500 mW surge energy without degradation - eliminates need for external TVS in cost-sensitive DIN-rail controllers. |
Use Scenario: Reference element in ultra-low-power battery voltage monitor for ECG patch with 10-year shelf life. IC Role / Device Role / Timing Role: Precision Zener defining threshold for lithium-ion cell undervoltage detection circuit. Use Value: Provides 22 V reference with <0.05 µA leakage at 16.7 V - reduces standby current by 3× versus standard 1N4748A, extending shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C22-7-F | Same 22 V nominal, but rated at 300 mW PD, higher IR (0.1 µA @ 17 V), SOT-23 package. | Limited to non-automotive consumer designs due to lack of AEC-Q101 qualification and lower power handling. | Select when board space is constrained and automotive qualification is not required. |
| MMSZ5248B-7-F | 22 V nominal, 500 mW rating, but specified at IZT = 20 mA - higher test current increases dynamic impedance and reduces low-current stability. | Less suitable for µA-bias circuits; better for higher-current shunt regulators where thermal mass stabilizes VZ. | Prefer for industrial power supplies with >1 mA bias current and no automotive compliance needs. |
Compared with BZX84-C22-7-F and MMSZ5248B-7-F, DDZ9708Q-7 uniquely combines AEC-Q101 qualification, 50 µA test current, and 500 mW FR-4-rated dissipation - making it the only option validated for automotive low-power reference and clamp functions requiring both reliability and microampere-level leakage control.
Availability
DDZ9708Q-7 is available at Aetrix Electronics and suitable for automotive body control modules, portable gas sensor interfaces, industrial PLC input protection, and medical wearable power monitors requiring stable component supply with full traceability and lifecycle continuity.
Supply support for DDZ9708Q-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 sales operations across Asia, Europe, and North America.
The DDZ9xxxQ series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for high-reliability voltage reference and overvoltage protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9708Q-7 guarantees ≤0.05 µA leakage?
Per DS30410 Rev. 17–2 Table "Electrical Characteristics", DDZ9708Q-7 guarantees IR ≤ 0.05 µA at VR = 16.7 V. This value is fixed per part number and reflects the voltage below which leakage remains within specification - critical for low-power standby design.
Is DDZ9708Q-7 compatible with lead-free reflow profiles?
Yes. The device uses matte tin annealed terminals over Alloy 42 leadframe and is rated for soldering per MIL-STD-202, Method 208. Its SOD123 package supports standard JEDEC J-STD-020 Level 1 moisture sensitivity and typical Pb-free reflow profiles up to 260 °C peak.
Does the "Q" suffix indicate AEC-Q101 qualification for the entire tape-and-reel reel?
Yes. The "Q" in DDZ9708Q-7 denotes full AEC-Q101 qualification applied to every unit on the reel. Each lot undergoes stress testing per AEC-Q101 requirements, and PPAP documentation is available upon request for automotive customers.
Can DDZ9708Q-7 be used in place of a 1N4748A in an existing design?
No - direct substitution is not recommended. While both are 22 V Zeners, 1N4748A is through-hole, rated at 1 W, tested at 21 mA, and lacks AEC-Q101 qualification. DDZ9708Q-7's lower test current and SOD123 footprint require circuit recalibration and layout revision for thermal and bias compatibility.
DDZ9708Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ9708Q-7 FAQ
1.How can I place an order for DDZ9708Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9708Q-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DDZ9708Q-7 reliable?
The price and inventory of DDZ9708Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9708Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ9708Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9708Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9708Q-7?
DDZ9708Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9708Q-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DDZ9708Q-7?
For technical support, including DDZ9708Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9708Q-7 requirements.
6.How does Aetrix verify that DDZ9708Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9708Q-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DDZ9708Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ9708Q-7?
All DDZ9708Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9708Q-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DDZ9708Q-7 part is unused and in its original packaging.
Return procedure for DDZ9708Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9708Q-7 Tags
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