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Diodes Incorporated DDZ9714-7
- Part No.:
- DDZ9714-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9714-7.pdf
- Description:
- DIODE ZENER 33V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,358
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Product details
Overview
DDZ9714-7 from Diodes Incorporated is a surface-mount low-current Zener diode with a nominal zener voltage of 33 V, ±3% tolerance (31.35–34.65 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, and specified at 50 µA test current - optimized for low-bias, battery-powered voltage reference and regulation in portable electronics.
For engineers reviewing the DDZ9714-7 datasheet, DDZ9714-7 pinout, DDZ9714-7 application, or DDZ9714-7 equivalent, this device serves as a precision, low-leakage (≤0.05 µA @ 25 V) voltage clamp in power supply feedback paths, overvoltage protection circuits, and analog reference shunts where stable 33 V regulation under light load is required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable voltage across its terminals. Its 33 V nominal zener voltage falls within the positive temperature coefficient region (>6 V), exhibiting a typical TC of +0.08 %/°C per Fig. 20, ensuring predictable drift over temperature.
Designed for SOD123 package mounting, it delivers 500 mW power handling with RθJA = 340 °C/W and RθJL = 150 °C/W, enabling thermal management in compact layouts. Reverse leakage remains ≤0.05 µA at VR = 25 V, supporting ultra-low quiescent current designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 33 V - precise clamping/reference point for 33 V rail regulation or overvoltage threshold detection |
| Zener Voltage Tolerance | ±3% (31.35–34.65 V) - ensures consistent performance across production lots without post-assembly trimming |
| Test Current (IZT) | 50 µA - enables operation in micro-power systems such as coin-cell IoT sensors and standby power monitors |
| Max Reverse Leakage (IR) | 0.05 µA @ 25 V - minimizes parasitic loading in high-impedance reference nodes and battery drain |
| Power Dissipation (PD) | 500 mW on FR-4 @ TL = +75°C - supports robust transient energy absorption in compact PCB footprints |
| Package | SOD123 - industry-standard 2-pin surface-mount outline compatible with automated pick-and-place and reflow |
| Thermal Resistance (RθJA) | 340 °C/W - defines maximum junction temperature rise under ambient conditions for reliability margining |
Pinout & Package
SOD123 package: molded plastic case (UL 94V-0), cathode band marking, matte tin annealed terminals on Alloy 42 leadframe, weight ≈ 0.01 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of circuit; forms reference ground return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated node; maintains 33 V relative to anode when reverse biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in nanoampere-bias circuits without compromising voltage accuracy |
| Automated assembly compatibility | SOD123 footprint with standardized tape-and-reel packaging (-7 suffix = 3,000/reel) - supports high-yield SMT line integration |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), RoHS 3 compliant - meets global environmental directives without performance trade-offs |
| Thermal stability | +0.08 %/°C TC (Fig. 20) - predictable positive drift simplifies compensation in temperature-critical references |
Applications
| Battery Voltage Monitor | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Monitoring Li-ion battery pack voltage during charging/discharging cycles in wearables. IC Role / Device Role / Timing Role: Shunt reference element in comparator-based overvoltage detection circuit. Use Value: 33 V clamping prevents false trip at 3.7 V/cell × 8 cells (29.6 V nominal), providing 3.4 V safety margin with minimal standby current draw. |
Use Scenario: Protecting USB-C PD controller input from transient surges exceeding 20 V negotiation range. IC Role / Device Role / Timing Role: Standby-mode voltage clamp placed between VBUS and GND before DC-DC input stage. Use Value: 0.05 µA leakage at 25 V avoids loading PD communication lines; 500 mW rating absorbs 100 ns/1 kV ESD pulses per IEC 61000-4-2 Level 4. |
| Industrial Sensor Reference | Programmable Logic Controller Input Protection |
|
Use Scenario: Providing stable 33 V reference for 16-bit ADC biasing in 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Precision shunt regulator supplying clean reference to op-amp buffer driving ADC REF+ pin. Use Value: ±3% initial tolerance and +0.08 %/°C TC ensure <0.5% total error over –40 to +85°C, meeting SIL-2 functional safety requirements. |
Use Scenario: Protecting 24 V digital input channels in PLC backplanes from field-wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across input optocoupler LED anode-cathode. Use Value: 33 V breakdown voltage exceeds 24 V nominal by 37.5%, allowing safe margin above 30 V surge tests while limiting clamping voltage to <36 V peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33 (ON Semiconductor) | Same 33 V nominal, but ±5% tolerance (31.4–34.7 V); higher IR = 0.1 µA @ 25 V; SOT-23 package | Less precise regulation; larger footprint incompatible with ultra-dense layouts requiring SOD123 | Select when cost sensitivity outweighs tight tolerance and leakage requirements |
| MMSZ5261B (Vishay) | 33 V nominal, ±5% tolerance; 500 mW rating; IR = 0.1 µA @ 25 V; SOD-123 package identical | Identical footprint but looser tolerance and higher leakage reduce accuracy in precision references | Choose only if legacy BOM alignment or dual-sourcing mandates Vishay's qualification profile |
Compared with BZX84-C33 and MMSZ5261B, DDZ9714-7 offers tighter ±3% tolerance and fivefold lower leakage (0.05 µA), delivering superior voltage stability in low-power, high-accuracy shunt references - critical for battery life and measurement integrity.
Availability
DDZ9714-7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and USB-C power delivery protection requiring stable component supply with guaranteed long-term continuity.
Supply support for DDZ9714-7 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, energy-efficient components for automotive, industrial, and consumer markets.
The DDZ9678–DDZ9717 series belongs to Diodes' precision low-current Zener portfolio, engineered specifically for ultra-low-power voltage referencing and clamping in space-constrained, battery-operated systems.
FAQ
What is the maximum continuous reverse voltage that DDZ9714-7 can safely block before breakdown?
DDZ9714-7 is rated for a nominal zener voltage of 33 V with a guaranteed range of 31.35 V to 34.65 V at IZT = 50 µA. It begins controlled breakdown near the lower end of this range and maintains regulation up to its 500 mW power limit. Applied reverse voltage below 31.35 V results in negligible current (<0.05 µA at 25 V), confirming reliable blocking behavior in pre-breakdown operation.
Can DDZ9714-7 be used in place of a 3.3 V Zener diode for logic-level clamping?
No - DDZ9714-7 is a 33 V device and will not break down at 3.3 V. Attempting to use it for 3.3 V clamping would leave the circuit unprotected, as reverse leakage remains below 0.05 µA up to 25 V. For 3.3 V applications, refer to DDZ9684 (3.3 V, SOD123) or equivalent low-voltage Zeners in the same family.
Does DDZ9714-7 require a series current-limiting resistor in all applications?
Yes - as a shunt regulator, DDZ9714-7 must be used with a series resistor to limit current through the diode and prevent thermal runaway. The resistor value is calculated based on maximum input voltage, desired zener current (e.g., 50 µA to 10 mA), and load current. Without it, excessive power dissipation beyond 500 mW will cause permanent damage.
Is DDZ9714-7 qualified for automotive applications?
No - the standard DDZ9714-7 is not AEC-Q101 qualified. Automotive-grade versions carry the "Q" suffix (e.g., DDZ9714Q-7), are manufactured in IATF 16949-certified facilities, and support PPAP documentation. Only Q-suffix parts meet automotive change control and reliability requirements.
DDZ9714-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25 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
DDZ9714-7 FAQ
1.How can I place an order for DDZ9714-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9714-7 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 DDZ9714-7 reliable?
The price and inventory of DDZ9714-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9714-7 is usually 5 days.
3.What payment methods are accepted for DDZ9714-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9714-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9714-7?
DDZ9714-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9714-7 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 DDZ9714-7?
For technical support, including DDZ9714-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9714-7 requirements.
6.How does Aetrix verify that DDZ9714-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9714-7 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 DDZ9714-7 meets industry standards.
7.What is the process for return or replacement of DDZ9714-7?
All DDZ9714-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9714-7, 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 DDZ9714-7 part is unused and in its original packaging.
Return procedure for DDZ9714-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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