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Diodes Incorporated DDZ9702T-7
- Part No.:
- DDZ9702T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
DDZ9702T-7.pdf
- Description:
- DIODE ZENER 15V 150MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:74,737
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Product details
Overview
DDZ9702T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage of 15 V (min 14.25 V, max 15.75 V), 150 mW power dissipation, 833 °C/W thermal resistance, 0.05 µA reverse leakage at 11.4 V, and SOD523 package. It provides precise voltage regulation in low-power biasing, reference, and protection circuits for industrial sensors and portable power management.
For engineers reviewing the DDZ9702T-7 datasheet, DDZ9702T-7 pinout, DDZ9702T-7 application, or DDZ9702T-7 equivalent, this page delivers verified electrical specs, thermal behavior, SOD523 terminal mapping, and direct alternatives for voltage reference design and overvoltage clamp selection.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals under controlled current (IZT = 50 µA). Its sharp breakdown characteristic and low leakage support high-accuracy analog sensing and precision bias networks.
The SOD523 package enables automated placement on space-constrained PCBs while delivering thermal performance suitable for ambient temperatures from –65 °C to +150 °C. Its matte tin–annealed alloy 42 leadframe ensures reliable solderability per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 15 V - Stable regulation point at IZT = 50 µA, ±5% tolerance band |
| Power Dissipation | 150 mW - Maximum continuous power at TA = 25°C on FR-4 board with recommended pad layout |
| Reverse Leakage Current | 0.05 µA @ VR = 11.4 V - Ensures minimal quiescent current in high-impedance reference nodes |
| Thermal Resistance | 833 °C/W - Junction-to-ambient value defining temperature rise per milliwatt under standard mounting |
| Forward Voltage | 0.9 V @ IF = 10 mA - Confirmed conduction threshold for forward-bias verification or dual-use applications |
| Operating Temp Range | –65 °C to +150 °C - Validated performance envelope for automotive under-hood and industrial control environments |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic case (0.55–0.65 mm height, 0.75–0.85 mm width, 1.15–1.25 mm length), cathode identified by band marking, weight ≈ 0.002 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse breakdown return path | Connected to lower-potential node in regulation circuit; forms reference ground return in shunt configuration |
| Cathode | Forward current exit / Reverse breakdown voltage source | Marked with band; connected to regulated voltage rail; defines output node in shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| Sharp Breakdown Knee | Enables stable regulation at low test currents (50 µA), reducing sensitivity to supply variation in battery-powered systems |
| Low Leakage Current | 0.05 µA at 11.4 V supports microamp-level bias networks without degrading accuracy in sensor front-ends |
| SOD523 Footprint | 0.8 mm × 1.2 mm outline allows dense placement in wearables and IoT edge nodes where board area is constrained |
| Lead-Free & Halogen-Free | Meets RoHS 2 (2011/65/EU) and green compound standards (<900 ppm Br/Cl, <1000 ppm Sb), supporting eco-compliant manufacturing |
Applications
| Industrial Sensor Signal Conditioning | Portable Device Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in factory automation transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 15 V bias to Wheatstone bridge, compensating for supply drift. Use Value: Tight 14.25–15.75 V tolerance and <0.05 µA leakage ensure bridge output linearity remains within ±0.1% full-scale error. | Use Scenario: Protecting USB-C PD interface ICs from transient overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance clamping diode limiting VBUS surge to ≤11.4 V before LDO input. Use Value: Fast response and sharp knee prevent latch-up in 3.3 V logic rails while drawing negligible standby current. |
| Programmable Logic Controller Analog Input | Medical Diagnostic Equipment Reference |
Use Scenario: Providing calibration reference for 16-bit ADC inputs measuring 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision voltage reference in ratiometric measurement circuit, directly tied to ADC reference divider. Use Value: Temperature coefficient optimized near 15 V (Fig. 17) minimizes drift to <±0.05%/°C over –40 to +85 °C operating range. | Use Scenario: Generating stable bias for photodiode transimpedance amplifiers in pulse oximetry modules. IC Role / Device Role / Timing Role: Low-noise DC reference establishing virtual ground and gain-setting node in high-gain analog front-end. Use Value: Ultra-low leakage avoids injection error in femtoamp-level photocurrent measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C15L | Same 15 V nominal, but SOD323 package (larger footprint, 200 mW rating) | Higher power handling suits higher-current references; less suitable for ultra-dense layouts | Select when thermal margin >50 mW is required or legacy SOD323 tooling is in use |
| MMSZ5245B-TP | 15 V nominal, SOD-123 package, 500 mW rating, higher leakage (1 µA @ 12 V) | Greater power capability but looser leakage spec limits use in nanoamp-sensitivity circuits | Prefer for cost-sensitive industrial controls where leakage <0.1 µA is not critical |
Compared with BZX584C15L and MMSZ5245B-TP, DDZ9702T-7 offers the smallest footprint (SOD523), lowest leakage (0.05 µA), and tightest voltage tolerance (±5%)-making it optimal for space- and precision-constrained applications like portable medical sensors and miniaturized PLC I/O modules.
Availability
DDZ9702T-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable device power rail clamp, and programmable logic controller analog input requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for DDZ9702T-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 DDZ9689T–DDZ9717T series targets compact, high-reliability voltage reference needs in consumer, industrial, and computing applications-designed specifically for automated assembly and low-leakage, low-power regulation.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9702T-7 guarantees ≤0.05 µA leakage?
DDZ9702T-7 guarantees ≤0.05 µA reverse leakage current at VR = 11.4 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.
Can DDZ9702T-7 be used in place of a 15 V Zener diode with higher power rating?
No-DDZ9702T-7 has a maximum power dissipation of 150 mW. Substituting it for higher-rated Zeners (e.g., 500 mW types) risks thermal failure if operating current exceeds ~10 mA. Derating per Fig. 1 is mandatory above 25°C ambient.
Does DDZ9702T-7 have a specified temperature coefficient (TCVZ)?
Yes-its typical temperature coefficient falls within ±0.05%/°C near 15 V, as shown in Figure 17 (DDZ9697T–DDZ9707T curve). This value is derived from characterization data and supports stable operation across –40°C to +85°C in precision reference designs.
Is the SOD523 package of DDZ9702T-7 compatible with standard reflow profiles?
Yes-the SOD523 package is rated for moisture sensitivity level 1 per J-STD-020D and supports standard Pb-free reflow profiles (peak ≤260°C). Its matte tin–annealed terminals meet MIL-STD-202, Method 208 for solderability.
DDZ9702T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
DDZ9702T-7 FAQ
1.How can I place an order for DDZ9702T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9702T-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 DDZ9702T-7 reliable?
The price and inventory of DDZ9702T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9702T-7 is usually 5 days.
3.What payment methods are accepted for DDZ9702T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9702T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9702T-7?
DDZ9702T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9702T-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 DDZ9702T-7?
For technical support, including DDZ9702T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9702T-7 requirements.
6.How does Aetrix verify that DDZ9702T-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9702T-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 DDZ9702T-7 meets industry standards.
7.What is the process for return or replacement of DDZ9702T-7?
All DDZ9702T-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9702T-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 DDZ9702T-7 part is unused and in its original packaging.
Return procedure for DDZ9702T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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