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Diodes Incorporated DDZ11C-7
- Part No.:
- DDZ11C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ11C-7.pdf
- Description:
- DIODE ZENER 11.1V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,235
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Product details
Overview
DDZ11C-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 10.82–11.38 V at 10 mA test current, 10 Ω maximum zener impedance at 10 mA, and ±0.1 µA maximum reverse leakage at 8.4 V. It operates across –65 °C to +150 °C and delivers stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the DDZ11C-7 datasheet, DDZ11C-7 pinout, DDZ11C-7 application, or DDZ11C-7 equivalent, key selection criteria include tight zener voltage tolerance (±2.5% at 11 V), low thermal resistance (425 °C/W on minimal pad), SOD123 package compatibility with automated assembly, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown mode. Its zener voltage exhibits a positive temperature coefficient (~+0.06 %/°C near 11 V), enabling predictable drift compensation in temperature-stable bias networks.
Designed for low-noise, low-current regulation, it supports 10 mA nominal zener test current and maintains <0.1 µA reverse current up to 8.4 V - critical for high-impedance sensing nodes and precision ADC reference buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.82–11.38 V @ IZT = 10 mA - ensures ±2.5% tolerance for accurate 11 V reference generation |
| Zener Impedance (ZZT) | 10 Ω max @ 10 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | 0.1 µA max @ VR = 8.4 V - preserves signal integrity in high-Z feedback paths |
| Power Dissipation | 294 mW @ TA = 25°C (min pad layout) - defines safe continuous operation without heatsinking |
| Thermal Resistance (RθJA) | 425 °C/W - requires careful PCB copper area planning for thermal management |
| Operating Temperature | –65 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| Package | SOD123 - 2.65 mm × 1.55 mm footprint compatible with standard pick-and-place and reflow profiles |
Pinout & Package
DDZ11C-7 uses the SOD123 surface-mount package: cathode indicated by a band on the body; anode and cathode are the only two terminals. The device is unidirectional and polarity-sensitive in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to higher potential node; reverse-biased to establish regulated voltage drop |
| Anode | Reference return | Typically tied to system ground or low-side bias point; completes zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage reference | ±2.5% VZ tolerance enables direct use in 11 V calibration without trimming |
| Automated assembly compatibility | SOD123 package with matte tin annealed terminals meets MIL-STD-202 solderability requirements |
| High-reliability construction | Lead-free, halogen-free "Green" molding compound (UL 94V-0) and IATF16949 manufacturing |
| Low leakage performance | 0.1 µA max reverse current at 8.4 V supports battery-powered sensor biasing |
| Extended temperature range | –65 °C to +150 °C operation validated per AEC-Q101 for automotive powertrain modules |
Applications
| Industrial Sensor Signal Conditioning | Automotive ECU Reference Voltage |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing fixed 11 V bias to Wheatstone bridge. Use Value: Tight 2.5% VZ tolerance eliminates need for post-calibration trimming; low 0.1 µA leakage prevents loading of high-impedance sensor outputs. |
Use Scenario: Generating stable reference for analog-to-digital conversion of engine coolant temperature in powertrain control units. IC Role / Device Role / Timing Role: Precision shunt regulator supplying reference to 12-bit SAR ADC input stage. Use Value: AEC-Q101 qualification and –65 °C to +150 °C operation ensure reliability across cold-start to full-load thermal cycles. |
| Programmable Logic Controller (PLC) Input Protection | Medical Instrumentation Power Monitoring |
|
Use Scenario: Clamping overvoltage transients on 24 V DC digital input channels in industrial PLCs. IC Role / Device Role / Timing Role: Zener clamp limiting input voltage to protect downstream optocoupler and microcontroller GPIO. Use Value: 294 mW power rating allows sustained clamping during 100 ms surge events; SOD123 footprint fits dense I/O module layouts. |
Use Scenario: Providing stable 11 V reference for isolated DC-DC converter feedback in portable diagnostic devices. IC Role / Device Role / Timing Role: Secondary-side voltage reference for TL431-like feedback loop in medical-grade isolated power supply. Use Value: 10 Ω zener impedance ensures minimal reference error under dynamic load changes; RoHS3 compliance meets IEC 60601-1 material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | 10.4–11.6 V range (±5%), 20 Ω ZZT, SOT-23 package | Higher zener impedance and looser tolerance; smaller footprint but lower power rating (300 mW) | Select when board space is constrained and ±5% VZ is acceptable; avoid in high-precision feedback loops |
| MMSZ5240B-TP | 10.5–11.5 V range (±5%), 15 Ω ZZT, SOD-123 package, no AEC-Q101 qualification | Same package but lacks automotive qualification and has wider VZ spread | Use in commercial-grade instrumentation where cost is prioritized over automotive reliability and tight tolerance |
Compared with BZX84-C11LT1G and MMSZ5240B-TP, DDZ11C-7 offers superior voltage accuracy (±2.5% vs. ±5%), lower dynamic impedance (10 Ω vs. ≥15 Ω), and guaranteed AEC-Q101 qualification - making it the preferred choice for safety-critical or high-accuracy 11 V reference designs.
Availability
DDZ11C-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive ECU reference generation, and medical power monitoring requiring stable component supply and long-term lifecycle support.
Supply support for DDZ11C-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 DDZ series targets precision voltage reference applications in automotive, industrial, and medical systems, emphasizing tight tolerance, low leakage, and AEC-Q101-compliant reliability in compact SOD123 packaging.
FAQ
What is the maximum power dissipation of DDZ11C-7 at 75°C ambient?
DDZ11C-7 delivers 500 mW maximum power dissipation at lead temperature (TL) = +75°C, as specified in the Absolute Maximum Ratings table. This value applies when the device is mounted with optimized thermal conduction - such as on a large copper plane - and reflects its capability under controlled thermal boundary conditions, not ambient-only derating.
Does DDZ11C-7 have automotive qualification?
Yes - the DDZ11C-7 is part of the automotive-grade DDZQ series (e.g., DDZ11CQ-7). While the "-7" suffix denotes commercial tape-and-reel packaging, the underlying die and process are AEC-Q101 qualified, PPAP-capable, and manufactured in IATF16949-certified facilities, enabling drop-in use in automotive designs with proper documentation.
How does the temperature coefficient affect DDZ11C-7's stability?
DDZ11C-7 exhibits a typical temperature coefficient of +0.06 %/°C near 11 V, meaning its zener voltage increases ~6.6 mV per °C rise. This predictable positive drift allows designers to compensate for thermal effects in reference chains or select complementary components to achieve net-zero TC in multi-diode configurations.
Can DDZ11C-7 replace older Zener diodes like 1N4740A?
No - DDZ11C-7 is not a direct replacement for through-hole 1N4740A (10 V, ±5%, DO-41). It differs in voltage range (10.82–11.38 V), tolerance (±2.5%), package (SOD123 vs. DO-41), and thermal performance. Substitution requires validation of PCB layout, thermal margin, and circuit gain/offset adjustments due to tighter VZ and lower ZZT.
DDZ11C-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):
- 11.1 V
- Tolerance:
- ±2.52%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ11C-7 FAQ
1.How can I place an order for DDZ11C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ11C-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 DDZ11C-7 reliable?
The price and inventory of DDZ11C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ11C-7 is usually 5 days.
3.What payment methods are accepted for DDZ11C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ11C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ11C-7?
DDZ11C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ11C-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 DDZ11C-7?
For technical support, including DDZ11C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ11C-7 requirements.
6.How does Aetrix verify that DDZ11C-7 is sourced from the original manufacturer or authorized distributors?
All DDZ11C-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 DDZ11C-7 meets industry standards.
7.What is the process for return or replacement of DDZ11C-7?
All DDZ11C-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ11C-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 DDZ11C-7 part is unused and in its original packaging.
Return procedure for DDZ11C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ11C-7 Tags
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