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Diodes Incorporated DDZ8V2C-7
- Part No.:
- DDZ8V2C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ8V2C-7.pdf
- Description:
- DIODE ZENER 8.24V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,923
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Product details
Overview
DDZ8V2C-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 8.2 V, ±2.5% tolerance (8.03–8.45 V), 20 mA test current, 8 Ω dynamic impedance at 1 kHz, and 0.5 µA maximum reverse leakage at 6.5 V. It operates in SOD123 package and serves as voltage reference or overvoltage clamp in low-power analog circuits, power supply feedback loops, and sensor signal conditioning.
For engineers reviewing the DDZ8V2C-7 datasheet, DDZ8V2C-7 pinout, DDZ8V2C-7 application, or DDZ8V2C-7 equivalent, key selection criteria include zener voltage accuracy, thermal stability (TC ≈ +0.05%/°C near 8.2 V), low dynamic impedance for regulation fidelity, SOD123 footprint compatibility, and automotive-grade qualification status (AEC-Q101 not applicable - this is commercial-grade variant).
Technical Context
This device functions as a two-terminal, reverse-biased silicon Zener diode optimized for stable voltage reference generation under fixed-current bias. Its breakdown mechanism is predominantly avalanche-dominated above 6 V, yielding low temperature coefficient and predictable knee characteristics.
Designed for operation at IZT = 20 mA, it delivers tight VZ tolerance and low ZZT, enabling high-accuracy regulation in space-constrained PCB layouts. The SOD123 package supports automated placement and reflow soldering while maintaining thermal resistance of 425 °C/W on minimal copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.03–8.45 V @ IZT = 20 mA - defines regulated output range for reference or clamping |
| Zener Impedance (ZZT) | 8 Ω @ f = 1 kHz - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.5 µA @ VR = 6.5 V - guarantees low quiescent current in standby or high-impedance bias networks |
| Power Dissipation (PD) | 294 mW @ TA = 25°C (min. pad) - sets max continuous bias current to ~36 mA at 8.2 V |
| Thermal Resistance (RθJA) | 425 °C/W - requires careful thermal layout for ambient >75°C operation |
| Operating Temperature | −65 to +150 °C - supports industrial and extended-temperature applications |
| Package | SOD123 - 2.65 mm × 1.55 mm × 1.05 mm surface-mount outline with cathode band marking |
Pinout & Package
DDZ8V2C-7 uses a two-terminal SOD123 package: anode and cathode are accessed via the two metallized end terminals. Cathode is identified by a visible band on the component body. No internal connections beyond these two terminals exist.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail; forms return path during reverse breakdown |
| Cathode | Zener voltage output terminal / regulated node | Provides stable 8.2 V reference when biased with current-limiting resistor; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% (8.03–8.45 V) - enables direct replacement in 8.2 V reference designs without recalibration |
| Low dynamic impedance | 8 Ω @ 1 kHz - maintains regulation accuracy under varying load or source impedance |
| Automated assembly compatibility | SOD123 footprint with matte tin annealed terminals - ensures reliable solder wetting and IPC Class 3 process compliance |
| Green compound packaging | Halogen- and antimony-free molding compound (UL 94V-0) - meets RoHS 3 and automotive environmental requirements |
| Stable temperature coefficient | ≈+0.05%/°C near 8.2 V - minimizes drift across −40°C to +125°C operating range |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Feedback |
|---|---|
|
Use Scenario: Biasing and scaling analog outputs from pressure or temperature sensors before ADC input. IC Role / Device Role / Timing Role: Precision voltage reference for op-amp gain-setting resistors and offset calibration. Use Value: Tight 8.2 V tolerance ensures consistent sensor full-scale mapping across production batches without per-unit trimming. |
Use Scenario: Providing stable reference for error amplifier in 5–20 V USB PD buck-boost converter feedback network. IC Role / Device Role / Timing Role: Zener-based reference node for optocoupler-coupled secondary-side regulation loop. Use Value: Low 8 Ω impedance prevents feedback loop phase shift degradation, preserving stability margin at 300 kHz switching frequency. |
| Programmable Logic Controller (PLC) Input Protection | Medical Instrumentation Reference |
|
Use Scenario: Clamping 24 V digital input lines against ESD and transient overvoltage events. IC Role / Device Role / Timing Role: Fast-acting shunt protector placed between input and local ground. Use Value: 0.5 µA leakage at 6.5 V avoids false triggering in high-impedance input stages while clamping >15 kV HBM transients. |
Use Scenario: Generating stable bias for low-noise instrumentation amplifiers in portable ECG front-ends. IC Role / Device Role / Timing Role: Low-drift DC reference for PGA gain control and ADC reference buffer. Use Value: +0.05%/°C TC and <100 ppm/°C total drift ensure ≤0.5% reference error over clinical operating range (15–40°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-C8V2 (ON Semiconductor) | Same 8.2 V nominal, ±5% tolerance (7.79–8.61 V), 15 Ω ZZT, SOT-23 package | Larger footprint (SOT-23 vs SOD123), higher thermal resistance (~625 °C/W), no automotive qualification path | Select if board already uses SOT-23 library; avoid where space or thermal performance is constrained. |
| MMSZ5236B (Vishay) | 8.2 V nominal, ±5% tolerance (7.79–8.61 V), 10 Ω ZZT, SOD-123 package, RoHS-compliant | Identical package but looser tolerance and higher leakage (1.0 µA @ 6.5 V) | Acceptable for non-critical references; not recommended where <0.5 µA leakage or ±2.5% VZ is required. |
Compared with BZX84-C8V2 and MMSZ5236B, DDZ8V2C-7 offers tighter voltage tolerance, lower dynamic impedance, and lower leakage-making it preferable for high-accuracy analog references and compact industrial designs where SOD123 real estate is optimized.
Availability
DDZ8V2C-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery feedback circuits, PLC input protection, and medical instrumentation requiring stable component supply and long-term sourcing continuity.
Supply support for DDZ8V2C-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 the Americas.
The DDZ series targets cost-sensitive, high-volume precision voltage reference needs in consumer, industrial, and computing applications-emphasizing tight tolerance, low impedance, and robust SMD manufacturability in the SOD123 form factor.
FAQ
What is the maximum continuous power dissipation for DDZ8V2C-7 at 75°C ambient?
At TA = 75°C, DDZ8V2C-7 is rated for 500 mW power dissipation when mounted with lead temperature controlled to 75°C (Note 6). This corresponds to a maximum average current of ~61 mA at 8.2 V, assuming ideal thermal coupling to the PCB leads. Derating must follow Figure 1 in DS30407 Rev. 21-2.
Is DDZ8V2C-7 qualified for automotive applications?
No - DDZ8V2C-7 is the commercial-grade variant. Automotive qualification requires the "Q" suffix (e.g., DDZ8V2CQ-7), which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. The "C" grade denotes tighter voltage binning but no automotive change control or stress testing.
How does the temperature coefficient behave near 8.2 V?
Per Figure 16–19 in DS30407, the temperature coefficient of DDZ8V2C-7 is approximately +0.05%/°C - positive and relatively flat across −40°C to +125°C. This reflects its avalanche-dominated breakdown, minimizing drift in mid-voltage Zeners compared to lower-voltage (e.g., 5.1 V) devices with negative TC.
Can DDZ8V2C-7 be used in series or parallel configurations?
Series connection is permissible for higher reference voltages, but matching unit-to-unit VZ tolerance and TC is critical to avoid imbalance. Parallel use is not recommended due to mismatched knee characteristics causing current hogging; dedicated reference ICs or matched arrays should be used instead for parallel stability.
DDZ8V2C-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):
- 8.24 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.5 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
DDZ8V2C-7 FAQ
1.How can I place an order for DDZ8V2C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ8V2C-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 DDZ8V2C-7 reliable?
The price and inventory of DDZ8V2C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ8V2C-7 is usually 5 days.
3.What payment methods are accepted for DDZ8V2C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ8V2C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ8V2C-7?
DDZ8V2C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ8V2C-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 DDZ8V2C-7?
For technical support, including DDZ8V2C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ8V2C-7 requirements.
6.How does Aetrix verify that DDZ8V2C-7 is sourced from the original manufacturer or authorized distributors?
All DDZ8V2C-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 DDZ8V2C-7 meets industry standards.
7.What is the process for return or replacement of DDZ8V2C-7?
All DDZ8V2C-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ8V2C-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 DDZ8V2C-7 part is unused and in its original packaging.
Return procedure for DDZ8V2C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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