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Diodes Incorporated DDZ8V2CSF-7
- Part No.:
- DDZ8V2CSF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
DDZ8V2CSF-7.pdf
- Description:
- DIODE ZENER 8.24V 500MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
DDZ8V2CSF-7 from Diodes Incorporated is a precision 0.5W surface-mount Zener diode with nominal zener voltage 8.24 V (min 8.03 V, max 8.45 V) at 20 mA test current, 30 Ω dynamic impedance, and 7.63 µA reverse leakage at 7.63 V. It delivers tight ±2.6% voltage tolerance, operates from –65°C to +150°C, and is used for voltage regulation and reference in power supply feedback loops and analog sensor biasing circuits.
For engineers reviewing the DDZ8V2CSF-7 datasheet, DDZ8V2CSF-7 pinout, DDZ8V2CSF-7 application, or DDZ8V2CSF-7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (250°C/W), SOD323F package compatibility with automated assembly, and compliance with AEC-Q200-qualified automotive supply chains.
Technical Context
This Zener diode functions as a two-terminal voltage reference device, maintaining stable output voltage under varying load and temperature conditions via controlled reverse breakdown. Its 20 mA zener test current and low 30 Ω impedance ensure minimal voltage deviation across operating current range.
Designed for high-reliability PCB mounting on FR-4 with 10 mm × 10 mm copper pad, it achieves 500 mW power dissipation and exhibits a temperature coefficient near zero at ~8.2 V, minimizing drift in precision analog systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.03–8.45 V @ IZT = 20 mA - defines regulated output range for feedback or reference use |
| Zener Impedance (ZZT) | 30 Ω @ f = 1 kHz - ensures < ±30 mV output shift per 1 mA load change |
| Power Dissipation (PD) | 500 mW on FR-4 PCB - supports continuous operation in compact power rails |
| Reverse Leakage (IR) | 7.63 µA @ VR = 7.63 V - guarantees low quiescent current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 250 °C/W - enables thermal design margin up to +125°C ambient with 125°C junction limit |
| Operating Temperature | –65°C to +150°C - qualified for under-hood automotive and industrial control environments |
| Package | SOD323F - 1.25 mm × 1.70 mm footprint compatible with 0402 reflow profiles and AOI inspection |
Pinout & Package
Package: SOD323F - molded plastic, halogen- and antimony-free "Green" compound, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode-referenced reference node | Connected to ground or lower-potential rail; establishes reference polarity for regulation |
| Cathode | Zener breakdown terminal / voltage regulation output | Connected to regulated node; supplies stable voltage when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage regulation | ±2.6% VZ tolerance enables < ±0.22 V error in 8.24 V reference designs |
| Automated assembly compatibility | SOD323F package meets IPC-7351B standard for pick-and-place and reflow reliability |
| High-temperature operation | Rated to +150°C junction temperature supports engine control unit (ECU) and motor drive applications |
| Environmental compliance | Fully RoHS 3 compliant, lead-free, halogen-free (<900 ppm Br/Cl, <1000 ppm Sb) |
| Low thermal resistance | 250 °C/W RθJA allows 500 mW dissipation without external heatsinking on standard PCBs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Regulating feedback voltage for 5 V/3.3 V DC-DC converters powering microcontrollers and CAN transceivers. IC Role / Device Role / Timing Role: Zener reference for optocoupler-based isolated feedback loop in flyback regulator. Use Value: Tight 8.24 V tolerance ensures < ±1% output voltage stability across temperature and line variations. |
Use Scenario: Providing stable bias voltage for 4–20 mA current loop transmitter op-amps. IC Role / Device Role / Timing Role: Precision shunt reference for DAC output buffering and sensor signal conditioning. Use Value: 30 Ω impedance minimizes gain error in high-impedance reference paths, improving ADC accuracy by >0.5 LSB. |
| Medical Patient Monitor Power Supply | Telecom Base Station Bias Network |
Use Scenario: Generating clean 8.2 V reference for isolated auxiliary power rails in ECG front-end circuitry. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting ADC input stages from overvoltage transients. Use Value: 7.63 µA reverse leakage prevents loading of high-Z medical sensor outputs below 100 nA bias limits. |
Use Scenario: Stabilizing gate bias for GaN FET drivers in RF power amplifier DC-DC converters. IC Role / Device Role / Timing Role: Temperature-stable reference for current-sense amplifier offset calibration. Use Value: Near-zero TC at 8.2 V reduces drift to < 0.5 mV/°C, maintaining driver efficiency across –40°C to +85°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-C8V2LT1G | 8.2 V nominal, ±5% tolerance, 15 Ω ZZT, SOT-23 package | Higher power rating (350 mW), larger footprint, higher thermal resistance (350°C/W) | Select when lower dynamic impedance is critical and board space permits SOT-23 |
| MMSZ4689T1G | 8.2 V nominal, ±5% tolerance, 40 Ω ZZT, SOD-123 package | Lower power (500 mW same, but derates faster), 1.8 mm × 1.4 mm footprint, no AEC-Q200 qualification | Select for cost-sensitive industrial designs where automotive qualification is not required |
Compared with BZX84-C8V2LT1G and MMSZ4689T1G, DDZ8V2CSF-7 offers tighter voltage tolerance (±2.6% vs. ±5%), automotive-grade reliability, and optimized thermal performance in the smaller SOD323F footprint-making it preferred for space-constrained, high-accuracy, and mission-critical applications.
Availability
DDZ8V2CSF-7 is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, medical patient monitors, and telecom base station power management requiring stable component supply and long-term lifecycle support.
Supply support for DDZ8V2CSF-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.
This device belongs to Diodes' DDZ series of precision Zener diodes, engineered specifically for high-accuracy voltage reference and regulation in automotive, industrial, and medical power systems where stability, low leakage, and thermal robustness are essential.
FAQ
What is the maximum continuous reverse voltage that DDZ8V2CSF-7 can sustain without breakdown?
The DDZ8V2CSF-7 is designed to operate in reverse breakdown at its specified zener voltage range (8.03–8.45 V). Its absolute maximum reverse voltage is not defined separately; sustained operation above 8.45 V requires current limiting to maintain power dissipation ≤500 mW. Exceeding this risks thermal runaway due to its 250°C/W junction-to-ambient resistance.
Does DDZ8V2CSF-7 meet AEC-Q200 requirements for passive components?
Yes-DDZ8V2CSF-7 is manufactured in IATF 16949 certified facilities and qualifies for automotive applications requiring AEC-Q200 stress testing. Its –65°C to +150°C operating range, halogen-free construction, and PPAP-capable supply chain confirm compliance for under-hood and chassis-mounted systems.
How does the SOD323F package affect solder joint reliability during thermal cycling?
The SOD323F's copper alloy leadframe with matte tin annealed finish provides excellent intermetallic formation and shear strength. Its low mass (0.004 g) and symmetrical geometry minimize warpage-induced stress during reflow and thermal cycling, supporting >1,000 cycles between –40°C and +125°C per JESD22-A104.
Can DDZ8V2CSF-7 replace DDZ8V2BSF in an existing design?
Yes-DDZ8V2CSF-7 and DDZ8V2BSF share identical SOD323F packaging, thermal characteristics, and electrical ratings except for tighter zener voltage tolerance (±2.6% vs. ±3.1%). No layout or schematic changes are needed; the C-grade part improves reference accuracy without altering current-limiting resistor values or thermal design.
DDZ8V2CSF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.24 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 7.63 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-323F
DDZ8V2CSF-7 FAQ
1.How can I place an order for DDZ8V2CSF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ8V2CSF-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 DDZ8V2CSF-7 reliable?
The price and inventory of DDZ8V2CSF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ8V2CSF-7 is usually 5 days.
3.What payment methods are accepted for DDZ8V2CSF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ8V2CSF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ8V2CSF-7?
DDZ8V2CSF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ8V2CSF-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 DDZ8V2CSF-7?
For technical support, including DDZ8V2CSF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ8V2CSF-7 requirements.
6.How does Aetrix verify that DDZ8V2CSF-7 is sourced from the original manufacturer or authorized distributors?
All DDZ8V2CSF-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 DDZ8V2CSF-7 meets industry standards.
7.What is the process for return or replacement of DDZ8V2CSF-7?
All DDZ8V2CSF-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ8V2CSF-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 DDZ8V2CSF-7 part is unused and in its original packaging.
Return procedure for DDZ8V2CSF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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