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Diodes Incorporated DDZ11CS-7
- Part No.:
- DDZ11CS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DDZ11CS-7.pdf
- Description:
- DIODE ZENER 11V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,977
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Product details
Overview
DDZ11CS-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 11.1 V (min 10.82 V, max 11.38 V), 10 mA test current, 10 Ω maximum zener impedance at 5 mA, 0.1 µA maximum reverse leakage at 8.4 V, and SOD323 package for voltage regulation in low-power analog reference circuits.
For engineers reviewing the DDZ11CS-7 datasheet, DDZ11CS-7 pinout, DDZ11CS-7 application, or DDZ11CS-7 equivalent, this part serves as a stable 11.1 V reference in power supply feedback loops, sensor biasing networks, and overvoltage protection clamps where tight tolerance (±1.3%) and low dynamic impedance are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under controlled current conditions. Its sharp knee characteristics and low leakage (<0.1 µA at VR = 8.4 V) support high-accuracy voltage monitoring in battery-powered instrumentation.
The device uses alloy 42 leadframe with matte tin annealed finish, rated for -65°C to +150°C operation, and exhibits a temperature coefficient of approximately +0.06%/°C near 11 V, enabling predictable drift compensation in mid-voltage references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.82–11.38 V at IZT = 10 mA - defines regulation band for precision 11.1 V reference |
| Zener Impedance (ZZT) | 10 Ω max at IZT = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.1 µA max at VR = 8.4 V - enables low-error biasing in high-impedance nodes |
| Power Dissipation (PD) | 200 mW - supports continuous operation up to ~18 mA at 11.1 V without derating on FR-4 |
| Package | SOD323 - 1.3 mm × 1.7 mm footprint ideal for space-constrained PCB layouts |
| Thermal Resistance (RθJA) | 625 °C/W - requires thermal-aware pad layout to sustain full power at ambient >70°C |
Pinout & Package
SOD323 package: two-terminal surface-mount device with cathode band marking; no internal leads - anode and cathode connect directly to PCB pads via soldered terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes polarity for reverse-biased operation |
| Cathode | Regulated output node | Provides stable 11.1 V relative to anode when reverse current ≥1 mA is applied |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp breakdown knee | Enables stable regulation onset within ±0.1 V of nominal VZ, reducing uncertainty in threshold detection |
| Tight VZ tolerance | ±1.3% (10.82–11.38 V) - eliminates need for post-assembly trimming in production calibration |
| Low leakage current | 0.1 µA max at 8.4 V - preserves accuracy in microamp-level bias networks (e.g., op-amp input stages) |
| RoHS & halogen-free compliance | Meets EU Directive 2011/65/EU and <900 ppm Br/Cl, <1000 ppm Sb - supports green manufacturing requirements |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Feedback |
|---|---|
Use Scenario: Precision voltage reference for bridge sensor amplifiers in pressure transducers operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener diode provides stable 11.1 V reference to set gain and offset in instrumentation amplifier front-end. Use Value: Tight 1.3% VZ tolerance and 10 Ω impedance ensure <0.5% total error in 16-bit ADC signal chain. | Use Scenario: Overvoltage clamp in USB-C PD controller feedback path protecting CC line from transient surges. IC Role / Device Role / Timing Role: Acts as shunt regulator to limit feedback voltage to safe level during fault events. Use Value: Low 0.1 µA leakage prevents false triggering while 200 mW rating handles short-duration 15 V spikes. |
| Programmable Logic Controller Analog Inputs | Medical Wearable Battery Monitor |
Use Scenario: Reference source for 12-bit DAC used to generate calibrated 4–20 mA loop current in PLC I/O modules. IC Role / Device Role / Timing Role: Supplies precise 11.1 V to DAC's internal reference buffer, improving monotonicity and INL. Use Value: Sharp breakdown and low ZZT reduce code-to-code variation to <±1 LSB across temperature range. | Use Scenario: Voltage supervisor for lithium-polymer cell monitoring in ECG patch devices with 2.0–4.2 V operating range. IC Role / Device Role / Timing Role: Zener sets trip point for comparator detecting end-of-charge at 4.2 V via resistive divider. Use Value: Predictable +0.06%/°C TC allows accurate 4.2 V threshold maintenance from –20°C to +60°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | 11 V nominal, ±5% tolerance, 30 Ω ZZT, SOT-23 package | Higher impedance and looser tolerance reduce accuracy in precision references | Select when cost sensitivity outweighs regulation stability requirements |
| MMSZ5240B-TP | 11 V nominal, ±5% tolerance, 17 Ω ZZT, SOD-123 package | Larger footprint and higher leakage (0.1 µA @ 8.2 V) limit high-density designs | Prefer for legacy board compatibility where SOD-123 is already standardized |
Compared with BZX84-C11LT1G and MMSZ5240B-TP, DDZ11CS-7 delivers tighter voltage control (±1.3% vs. ±5%), lower dynamic impedance (10 Ω vs. ≥17 Ω), and smaller SOD323 footprint - making it optimal for new designs demanding high-accuracy, space-efficient voltage referencing.
Availability
DDZ11CS-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery feedback, and programmable logic controller analog inputs requiring stable component supply and RoHS-compliant sourcing.
Supply support for DDZ11CS-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 ICs, specializing in high-reliability, energy-efficient components for industrial, computing, and consumer markets.
The DDZ series targets precision voltage reference applications, designed specifically for automated SMT assembly and high-stability regulation in compact, low-power systems.
FAQ
What is the maximum reverse current (IZK) at which DDZ11CS-7 maintains specified zener voltage?
DDZ11CS-7 maintains its specified zener voltage down to IZK = 0.5 mA, where VZ remains ≥10.82 V. Below this current, regulation degrades rapidly due to the device entering the knee region of the breakdown curve, as confirmed in Figure 3 of DS30414 Rev. 10-2.
Can DDZ11CS-7 be used in series with another Zener to achieve higher reference voltages?
Yes - DDZ11CS-7 may be cascaded in series with identical or complementary Zeners (e.g., DDZ5V6BS) to generate composite references like 16.7 V. However, total power dissipation must remain ≤200 mW, and temperature coefficients will sum linearly, requiring recalibration if precision beyond ±2% is needed.
Is the SOD323 package of DDZ11CS-7 compatible with standard reflow profiles for lead-free soldering?
Yes - the SOD323 package meets J-STD-020 moisture sensitivity Level 1 and is qualified for standard Pb-free reflow profiles (peak 260°C, 30 sec max). The matte tin annealed finish ensures reliable wetting and intermetallic formation per MIL-STD-202 Method 208.
Does DDZ11CS-7 exhibit significant capacitance that could affect high-frequency noise rejection?
No - typical total capacitance is ≤2.5 pF at VR = 2 V and f = 1 MHz (Figure 6), making it suitable for DC and low-frequency (<100 kHz) reference applications. It is not intended for RF bypass or high-speed transient suppression.
DDZ11CS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±2.52%
- Power - Max:
- 200 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-323
DDZ11CS-7 FAQ
1.How can I place an order for DDZ11CS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ11CS-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 DDZ11CS-7 reliable?
The price and inventory of DDZ11CS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ11CS-7 is usually 5 days.
3.What payment methods are accepted for DDZ11CS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ11CS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ11CS-7?
DDZ11CS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ11CS-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 DDZ11CS-7?
For technical support, including DDZ11CS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ11CS-7 requirements.
6.How does Aetrix verify that DDZ11CS-7 is sourced from the original manufacturer or authorized distributors?
All DDZ11CS-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 DDZ11CS-7 meets industry standards.
7.What is the process for return or replacement of DDZ11CS-7?
All DDZ11CS-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ11CS-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 DDZ11CS-7 part is unused and in its original packaging.
Return procedure for DDZ11CS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ11CS-7 Tags
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