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Diodes Incorporated DDZ9688Q-7
- Part No.:
- DDZ9688Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9688Q-7.pdf
- Description:
- DIODE ZENER 4.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,641
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Product details
Overview
DDZ9688Q-7 from Diodes Incorporated is a surface-mount, low-current Zener diode in SOD123 package with nominal zener voltage 4.7 V (±5% tolerance), 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 in battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the DDZ9688Q-7 datasheet, DDZ9688Q-7 pinout, DDZ9688Q-7 application, or DDZ9688Q-7 equivalent, this part serves as a stable, low-leakage (5 µA @ VR = 3 V), RoHS-compliant, halogen-free voltage clamp for automotive body electronics, portable instrumentation, and I/O protection in industrial controllers.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled zener voltage (4.47–4.94 V) at 50 µA, enabling accurate voltage regulation under minimal bias. Its low thermal resistance (RθJL = 150 °C/W) supports stable operation in thermally constrained automotive modules.
The device exhibits a temperature coefficient of approximately +0.04 %/°C near 4.7 V, minimizing drift across –65 to +150 °C operating range. Its SOD123 package enables automated placement and reflow compatibility while maintaining robust moisture sensitivity level (MSL 1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V nominal (4.47–4.94 V min/max), measured at 50 µA - ensures precise clamping in low-bias analog monitoring paths |
| Power Dissipation (PD) | 500 mW at TL = +75°C on FR-4 - supports sustained operation in compact automotive ECUs without forced cooling |
| Reverse Leakage (IR) | 5 µA max at VR = 3 V - minimizes quiescent current drain in always-on battery circuits |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - enables reliable anode-cathode polarity verification during functional test |
| Thermal Resistance (RθJL) | 150 °C/W - allows direct thermal coupling to PCB copper for predictable junction temperature rise in sealed enclosures |
| Operating Temperature | –65 to +150 °C - qualified for under-hood and transmission-control module environments |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or low-impedance return path to establish stable reference node |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to regulated rail or signal line requiring overvoltage protection or reference stabilization |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including PPAP submission and IATF 16949 manufacturing traceability |
| Low test current (50 µA) | Enables use in ultra-low-power systems where bias current must stay below 100 µA |
| Halogen & antimony free | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant with global green electronics directives |
| SOD123 footprint | Standardized 1.55 mm × 2.65 mm outline compatible with high-speed pick-and-place and IPC-7351B land patterns |
Applications
| Automotive Body Control Module | Portable Gas Sensor Interface |
|---|---|
Use Scenario: Voltage reference for ADC input scaling in door module LIN transceivers. IC Role / Device Role / Timing Role: Zener clamp providing stable 4.7 V reference to op-amp buffer driving 12-bit SAR ADC. Use Value: Maintains ±0.5% reference accuracy over –40 to +105 °C ambient, eliminating need for external voltage reference IC. |
Use Scenario: Biasing electrochemical gas sensor electrodes in handheld CO detectors. IC Role / Device Role / Timing Role: Low-leakage voltage regulator supplying fixed 4.7 V to sensor working electrode. Use Value: Draws only 5 µA leakage at 3 V reverse bias, extending AA battery life beyond 2 years in standby mode. |
| Industrial PLC Analog Input Protection | Medical Wearable Power Sequencing |
Use Scenario: Overvoltage clamp on 0–10 V analog input channel of DIN-rail mounted controller. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting transient spikes to ≤4.94 V before signal conditioning stage. Use Value: Withstands 500 mW surge energy without degradation, meeting IEC 61000-4-5 Level 3 requirements. |
Use Scenario: Reset supervisor reference in Bluetooth-enabled ECG patch with coin-cell supply. IC Role / Device Role / Timing Role: Provides clean 4.7 V threshold for POR circuit triggering MCU wake-up after battery insertion. Use Value: Stable 4.7 V zener point ensures consistent reset timing across 2.0–3.6 V battery voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V7-7-F | Same 4.7 V nominal, but rated at 300 mW PD, higher RθJA (450 °C/W), non-automotive grade | Lacks AEC-Q101 qualification and MSL 1 rating - unsuitable for under-hood deployment | Select when cost sensitivity outweighs automotive reliability requirements and thermal margin exceeds 100 °C/W |
| MMSZ4700T1G | 4.7 V nominal, 500 mW rating, but 10 µA leakage at VR = 3 V and no AEC-Q101 certification | Higher leakage increases battery drain in always-on wearables by >100% | Prefer only for non-automotive industrial controls where leakage <5 µA is not required |
Compared with BZX84-C4V7-7-F and MMSZ4700T1G, DDZ9688Q-7 delivers lower leakage, tighter VZ tolerance, and full automotive qualification - making it the sole choice for safety-critical, thermally constrained, or long-life battery applications.
Availability
DDZ9688Q-7 is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, industrial analog I/O modules, and battery-powered IoT edge nodes requiring stable component supply with full traceability and lifecycle continuity.
Supply support for DDZ9688Q-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 DDZ96xxQ series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for voltage reference, overvoltage protection, and biasing in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9688Q-7 guarantees ≤5 µA leakage?
DDZ9688Q-7 guarantees ≤5 µA reverse leakage current at VR = 3 V, as specified in the Electrical Characteristics table. This value is measured under standard conditions (TA = +25°C) using short-duration pulse testing to minimize self-heating effects.
Is DDZ9688Q-7 compatible with lead-free reflow profiles per JEDEC J-STD-020?
Yes - DDZ9688Q-7 uses matte tin-annealed terminals and is rated for MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and withstand standard Pb-free reflow profiles (peak 260°C, 30 sec max) without baking.
Does the "Q" suffix indicate AEC-Q101 qualification for the entire DDZ9688Q-7 tape-and-reel reel?
Yes - the "Q" suffix denotes full AEC-Q101 qualification, PPAP capability, and production in IATF 16949-certified facilities. Every unit in the -7 (3,000-piece tape-and-reel) packaging meets automotive change control and lot traceability requirements.
Can DDZ9688Q-7 replace DDZ9688-7 in non-automotive designs?
Yes - DDZ9688Q-7 shares identical electrical characteristics and SOD123 mechanical form factor with DDZ9688-7. The "Q" variant adds automotive qualification but retains full functional and pinout compatibility, making it a drop-in upgrade for enhanced reliability.
DDZ9688Q-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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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
DDZ9688Q-7 FAQ
1.How can I place an order for DDZ9688Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9688Q-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 DDZ9688Q-7 reliable?
The price and inventory of DDZ9688Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9688Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ9688Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9688Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9688Q-7?
DDZ9688Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9688Q-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 DDZ9688Q-7?
For technical support, including DDZ9688Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9688Q-7 requirements.
6.How does Aetrix verify that DDZ9688Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9688Q-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 DDZ9688Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ9688Q-7?
All DDZ9688Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9688Q-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 DDZ9688Q-7 part is unused and in its original packaging.
Return procedure for DDZ9688Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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