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Diodes Incorporated DDZ9702-7
- Part No.:
- DDZ9702-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9702-7.pdf
- Description:
- DIODE ZENER 15V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:89,043
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Product details
Overview
DDZ9702-7 from Diodes Incorporated is a surface-mount low-current Zener diode with a nominal zener voltage of 15 V (min 14.25 V, max 15.75 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, specified at 50 µA test current, and housed in an SOD123 package. It serves as a precision voltage reference or clamp in low-power analog monitoring circuits, battery voltage supervisors, and portable sensor signal conditioning stages.
For engineers reviewing the DDZ9702-7 datasheet, DDZ9702-7 pinout, DDZ9702-7 application, or DDZ9702-7 equivalent, this part is selected for stable low-bias voltage regulation where thermal stability, low leakage (<0.05 µA at 11.4 V), and SOD123 automated assembly compatibility are critical design requirements.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its 15 V nominal zener voltage exhibits a positive temperature coefficient (~0.08 %/°C per Fig. 18), enabling predictable drift behavior in mid-range voltage references.
The device uses a planar epitaxial construction with cathode band marking, optimized for low-leakage performance and tight voltage tolerance (±5%). Its thermal resistance junction-to-lead is 150 °C/W, supporting reliable operation in compact PCB layouts with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal, 14.25–15.75 V range at IZT = 50 µA - defines precise clamping threshold for overvoltage protection and reference generation |
| Power Dissipation (PD) | 500 mW on FR-4 at TL = +75°C - sets maximum continuous power handling in standard PCB mounting |
| Reverse Leakage (IR) | <0.05 µA at VR = 11.4 V - ensures negligible standby current in battery-powered voltage monitor circuits |
| Zener Test Current (IZT) | 50 µA - enables stable regulation in ultra-low-current bias networks without loading sensitive sources |
| Thermal Resistance (RθJL) | 150 °C/W - determines junction temperature rise above lead temperature, critical for reliability in confined thermal environments |
| Package | SOD123 - surface-mount outline with 2.65 mm body width and 3.65 mm length, compatible with standard pick-and-place and reflow processes |
Pinout & Package
DDZ9702-7 is a two-terminal SOD123 packaged Zener diode. The cathode is identified by a visible band on the device body; the anode is the unmarked end. No internal pin numbering applies - terminals are functionally defined solely by polarity and physical marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal during regulation | Connected to higher-potential node; voltage drop develops across diode when reverse voltage exceeds VZ |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-side bias rail; completes current path during zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in microamp-level bias networks without compromising regulation accuracy |
| Automated assembly compatibility | SOD123 footprint with matte tin annealed terminals - supports high-yield reflow soldering and vision-based placement verification |
| Thermal derating profile | Linear power reduction above +75°C ambient - allows predictable safe operating area calculation for enclosure-limited designs |
| Halogen- and antimony-free "Green" construction | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates without sacrificing electrical performance |
Applications
| Battery Voltage Supervisor | Portable Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage in wearable health monitors to trigger low-battery alerts before shutdown. IC Role / Device Role / Timing Role: Zener reference for comparator input threshold, providing fixed 15 V reference against scaled-down battery voltage. Use Value: Low 50 µA test current minimizes quiescent drain on coin-cell supply; ±5% VZ tolerance ensures consistent alert thresholds across production units. |
Use Scenario: Biasing and clamping amplifier inputs in handheld environmental sensors exposed to ESD-prone field conditions. IC Role / Device Role / Timing Role: Reverse-biased clamp protecting op-amp inputs from transient overvoltage while maintaining DC reference integrity. Use Value: Sub-0.05 µA leakage at 11.4 V prevents signal offset drift; SOD123 size allows placement within 2 mm of protected node for effective high-frequency suppression. |
| Low-Power Analog Reference | Industrial Control Loop Calibration |
|
Use Scenario: Generating stable 15 V reference for 12-bit ADC biasing in solar-powered remote telemetry nodes. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-power alternatives in energy-constrained measurement front-ends. Use Value: 500 mW rating permits short-duration surge tolerance; positive TC (~0.08 %/°C) complements negative TC of associated resistors for improved overall thermal stability. |
Use Scenario: Calibrating 4–20 mA transmitter output stages in factory-floor PLC I/O modules requiring traceable voltage standards. IC Role / Device Role / Timing Role: Secondary reference for periodic self-calibration routines, verifying DAC linearity against known zener threshold. Use Value: Tight 14.25–15.75 V tolerance enables pass/fail validation within ±0.5% system error budget; RoHS/Green compliance satisfies industrial audit 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-C15LT1G | Same 15 V nominal, but rated for 300 mW PD and specified at IZT = 5 mA - higher test current increases dynamic impedance | Less suitable for sub-100 µA bias networks; better for higher-current shunt regulation | Select when circuit can support ≥5 mA test current and lower thermal margin is acceptable |
| MMSZ4688T1G | 15 V nominal, 500 mW rating, but specified at IZT = 1 mA - intermediate bias point between DDZ9702-7 and BZX84 series | Higher leakage (~0.1 µA at 11.4 V) and wider VZ tolerance (±5.3%) vs. DDZ9702-7's ±5% | Choose when moderate leakage is acceptable and tighter VZ distribution is not required |
Compared with BZX84-C15LT1G and MMSZ4688T1G, DDZ9702-7 delivers superior low-current regulation fidelity and lower leakage, making it optimal for battery-critical and ultra-low-power reference designs where 50 µA operation and <0.05 µA leakage are mandatory.
Availability
DDZ9702-7 is available at Aetrix Electronics and suitable for battery voltage supervision, portable sensor signal conditioning, low-power analog reference, and industrial control loop calibration requiring stable component supply and full RoHS/Green compliance.
Supply support for DDZ9702-7 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, application-optimized components for industrial, computing, consumer, and automotive markets.
DDZ9702-7 belongs to the DDZ9678–DDZ9717 family of low-current Zener diodes engineered specifically for precision voltage referencing in space-constrained, low-power systems where minimal bias current and automated assembly compatibility are essential.
FAQ
What is the maximum reverse leakage current for DDZ9702-7 at 11.4 V?
The maximum reverse leakage current for DDZ9702-7 is 0.05 µA at VR = 11.4 V, as specified in the Electrical Characteristics table. This value is measured under standard test conditions (TA = +25°C) using short-duration pulses to minimize self-heating effects, ensuring accurate low-leakage characterization for battery-sensitive applications.
Is DDZ9702-7 suitable for automotive applications?
DDZ9702-7 itself is the standard-grade version. The automotive-qualified variant is DDZ9702Q-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. Standard DDZ9702-7 is intended for industrial and commercial applications; for automotive use, the Q-suffix variant must be specified and sourced.
What is the thermal resistance junction-to-ambient (RθJA) for DDZ9702-7?
The thermal resistance junction-to-ambient (RθJA) for DDZ9702-7 is 340 °C/W when mounted on an FR-4 PCB with minimum recommended pad layout at TL = +75°C. This value assumes standard single-layer copper exposure per Diodes Incorporated's suggested SOD123 pad layout and is used to calculate worst-case junction temperature rise under given power dissipation.
Does DDZ9702-7 have a specified zener impedance?
While the datasheet does not list a single zener impedance (ZZT) value for DDZ9702-7, Figure 13 shows typical zener impedance characteristics for the DDZ9699–DDZ9705 group, indicating ~350 Ω at IZ = 1 mA and ~120 Ω at IZ = 10 mA. Impedance decreases with increasing test current and is strongly dependent on operating point and temperature.
DDZ9702-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 500 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-123
DDZ9702-7 FAQ
1.How can I place an order for DDZ9702-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9702-7 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 DDZ9702-7 reliable?
The price and inventory of DDZ9702-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9702-7 is usually 5 days.
3.What payment methods are accepted for DDZ9702-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9702-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9702-7?
DDZ9702-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9702-7 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 DDZ9702-7?
For technical support, including DDZ9702-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9702-7 requirements.
6.How does Aetrix verify that DDZ9702-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9702-7 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 DDZ9702-7 meets industry standards.
7.What is the process for return or replacement of DDZ9702-7?
All DDZ9702-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9702-7, 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 DDZ9702-7 part is unused and in its original packaging.
Return procedure for DDZ9702-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9702-7 Tags
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