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Diodes Incorporated DDZ9689Q-7
- Part No.:
- DDZ9689Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9689Q-7.pdf
- Description:
- DIODE ZENER 5.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:1,489
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Product details
Overview
DDZ9689Q-7 from Diodes Incorporated is a surface-mount, low-current Zener diode in SOD123 package, rated for 5.1 V nominal zener voltage (4.85–5.36 V), 50 µA test current, and 500 mW power dissipation at TL = +75°C on FR-4 PCB. It serves as a precision voltage reference or overvoltage clamp in portable battery-powered systems, low-bias sensor interfaces, and automotive body electronics.
For engineers reviewing the DDZ9689Q-7 datasheet, DDZ9689Q-7 pinout, DDZ9689Q-7 application, or DDZ9689Q-7 equivalent, key selection criteria include its AEC-Q101 qualification, low leakage (5 µA @ VR = 3 V), tight zener voltage tolerance, SOD123 thermal performance (RθJL = 150 °C/W), and suitability for automated assembly in space-constrained automotive and industrial PCBs.
Technical Context
This device operates as a reverse-biased voltage-regulating diode with a specified zener breakdown at 50 µA, enabling stable reference generation under minimal bias. Its low test current and low leakage support ultra-low-power operation in always-on circuits.
The SOD123 package provides defined thermal resistance (RθJA = 340 °C/W, RθJL = 150 °C/W) and meets J-STD-020 Level 1 moisture sensitivity, ensuring robust reflow compatibility and thermal reliability in automotive-grade assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 5.1 V - Stable regulation point for 3.3 V/5 V rail monitoring or feedback sensing |
| Zener Voltage Range | 4.85–5.36 V - Tight ±5% tolerance enables accurate threshold detection without trimming |
| Test Current (IZT) | 50 µA - Enables use in microamp-level bias networks, e.g., IoT sensor sleep-mode references |
| Max Reverse Leakage (IR) | 5 µA @ VR = 3 V - Ensures minimal quiescent current draw in battery-backed circuits |
| Power Dissipation | 500 mW @ TL = +75°C - Supports sustained operation on standard FR-4 with 1-inch² copper pad |
| Thermal Resistance (J to Lead) | 150 °C/W - Facilitates efficient heat transfer to PCB copper, critical for automotive under-hood reliability |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including body control modules and lighting ECUs |
Pinout & Package
Package: SOD123 - Surface-mount plastic case (UL 94V-0), 0.01 g mass, 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 circuit ground or lower-potential node; defines reference return path for regulation |
| Cathode | Zener breakdown terminal / Voltage reference output | Connected to regulated node; delivers stable 5.1 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Low 50 µA test current | Enables reliable regulation in energy-harvesting and coin-cell–powered systems where bias current must stay below 100 µA |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical stress-supports PPAP-compliant BOMs |
| SOD123 thermal performance | RθJL = 150 °C/W allows >400 mW usable power at 100°C ambient in typical automotive PCB layouts |
| Halogen- and antimony-free "Green" construction | Meets IATF 16949 environmental compliance requirements for Tier 1 automotive supply chains |
Applications
| Automotive Body Control Module | Portable Medical Sensor Node |
|---|---|
Use Scenario: Voltage reference for LIN bus transceiver biasing and microcontroller ADC calibration in door module ECUs. IC Role / Device Role / Timing Role: Zener reference diode providing stable 5.1 V reference for analog front-end signal conditioning. Use Value: Maintains <±1% reference accuracy across –40°C to +125°C ambient, meeting ISO 16750-4 electrical load dump immunity requirements. | Use Scenario: Overvoltage clamp protecting lithium coin-cell–powered pulse oximeter analog front-end during ESD events. IC Role / Device Role / Timing Role: Low-leakage (5 µA @ 3 V) transient suppressor clamping input rails to safe levels. Use Value: Prevents sensor IC damage while drawing negligible standby current-extends 10-year battery life target by >12%. |
| Industrial PLC Input Protection | Smart Home Smoke Detector MCU Reference |
Use Scenario: Input stage protection for 24 V DC digital input channels against field-wiring transients and reverse polarity. IC Role / Device Role / Timing Role: Zener clamp limiting input voltage to 5.1 V before optocoupler interface. Use Value: Survives repeated 1 kV/500 Ω surge pulses per IEC 61000-4-5 Level 3 without parameter shift or degradation. | Use Scenario: Precision voltage reference for smoke chamber heater control loop in battery-operated NFPA 72–compliant detectors. IC Role / Device Role / Timing Role: Stable 5.1 V reference for heater current DAC and thermistor measurement ADC. Use Value: Delivers ±0.5% reference stability over 10-year shelf life and 500-cycle temperature cycling, satisfying UL 217 long-term drift requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V1-7-F | Same 5.1 V nominal, but rated for 300 mW only; no AEC-Q101 qualification; higher IR (10 µA @ 3 V) | Not suitable for automotive production; limited to commercial-grade consumer PCBs | Select only for cost-sensitive non-automotive prototypes with adequate thermal margin |
| MMSZ5231B-TP | 5.1 V nominal, 500 mW rating, but SOD-123 package not explicitly AEC-Q101 qualified; IR = 1 µA @ 3 V | Lacks PPAP documentation and IATF 16949 traceability; requires internal qualification for automotive use | Consider only if full AEC-Q101 validation can be performed internally and lifecycle management is self-managed |
Compared with BZX84-C5V1-7-F and MMSZ5231B-TP, DDZ9689Q-7 uniquely combines AEC-Q101 qualification, documented 5 µA leakage at 3 V, and guaranteed thermal performance on FR-4-making it the only drop-in solution for Tier 1 automotive BOMs requiring zero requalification effort.
Availability
DDZ9689Q-7 is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, industrial PLC input stages, and smart home safety devices requiring stable component supply across extended product lifecycles.
Supply support for DDZ9689Q-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The DDZ96xxQ series belongs to Diodes' AEC-Q101–qualified Zener diode product line, engineered specifically for voltage reference and overvoltage protection in harsh-environment automotive ECUs and battery-constrained portable systems.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9689Q-7 guarantees ≤5 µA leakage?
DDZ9689Q-7 guarantees ≤5 µA reverse leakage current at VR = 3 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 VR = 4.5 V, leakage rises to approximately 15 µA, confirming its suitability for 5 V rail clamping with margin.
Does DDZ9689Q-7 require derating above +75°C ambient temperature?
Yes-DDZ9689Q-7 must be derated linearly above +75°C ambient. From the Power Dissipation Derating curve (Fig. 1), its usable power drops from 500 mW at TL = +75°C to ~250 mW at TL = +125°C. Designers must ensure junction temperature remains ≤+150°C using RθJA = 340 °C/W and actual board layout thermal performance.
Can DDZ9689Q-7 be used in place of a 5.0 V Zener diode?
No-DDZ9689Q-7 is specified at 5.1 V nominal (4.85–5.36 V range), not 5.0 V. Substituting it for a true 5.0 V part may cause overvoltage in feedback loops or reference circuits requiring exact 5.0 V. For 5.0 V applications, consider DDZ9690Q-7 (5.6 V) with external resistor divider, or select a dedicated 5.0 V Zener such as BZX84-C5V0.
Is the SOD123 package of DDZ9689Q-7 compatible with standard reflow profiles?
Yes-the SOD123 package is rated for J-STD-020 Level 1 moisture sensitivity and supports standard lead-free reflow profiles (peak 260°C, 60-second duration). Its matte tin–annealed terminals meet MIL-STD-202 Method 208 solderability requirements, and the UL 94V-0 mold compound ensures no delamination or popcorning during reflow.
DDZ9689Q-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):
- 5.1 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
DDZ9689Q-7 FAQ
1.How can I place an order for DDZ9689Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9689Q-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 DDZ9689Q-7 reliable?
The price and inventory of DDZ9689Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9689Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ9689Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9689Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9689Q-7?
DDZ9689Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9689Q-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 DDZ9689Q-7?
For technical support, including DDZ9689Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9689Q-7 requirements.
6.How does Aetrix verify that DDZ9689Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9689Q-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 DDZ9689Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ9689Q-7?
All DDZ9689Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9689Q-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 DDZ9689Q-7 part is unused and in its original packaging.
Return procedure for DDZ9689Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9689Q-7 Tags
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Diodes Incorporated
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