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Diodes Incorporated DDZ10ASF-7
- Part No.:
- DDZ10ASF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
DDZ10ASF-7.pdf
- Description:
- DIODE ZENER 9.36V 500MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
DDZ10ASF-7 from Diodes Incorporated is a 0.5W surface-mount precision Zener diode in SOD323F package, rated for 9.12–9.59V nominal zener voltage at 20mA test current, with 30Ω maximum zener impedance and 7.5µA reverse leakage at 8.66V. It delivers tight voltage tolerance (±2.5%), low thermal resistance (250°C/W), and is qualified for automotive-grade assembly per AEC-Q200 readiness requirements.
For engineers reviewing the DDZ10ASF-7 datasheet, DDZ10ASF-7 pinout, DDZ10ASF-7 application, or DDZ10ASF-7 equivalent, this part serves as a stable voltage reference in power supply feedback loops, overvoltage protection circuits, and analog signal conditioning where ±2.5% VZ accuracy and <30Ω dynamic impedance are critical design constraints.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 20mA and exhibits a temperature coefficient of approximately +6.5mV/°C near 10V-enabling predictable drift compensation in mid-range voltage references. Its SOD323F package supports automated pick-and-place assembly and provides defined thermal performance on FR-4 PCBs with 10mm × 10mm copper pads.
The device maintains stable regulation under pulse conditions (<40ms measurement window) and features a cathode band marking for unambiguous polarity identification. Reverse leakage remains below 7.5µA up to 8.66V, ensuring minimal error contribution in high-impedance bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.12–9.59V @ IZT = 20mA - defines precise regulation point for feedback or clamping |
| Power Dissipation | 500mW on FR-4 PCB - sets maximum continuous DC or pulsed power handling capability |
| Zener Impedance (ZZT) | ≤30Ω @ f = 1kHz - ensures minimal AC voltage variation under dynamic load changes |
| Reverse Leakage (IR) | ≤7.5µA @ VR = 8.66V - limits error current in high-Z reference nodes |
| Thermal Resistance (RθJA) | 250°C/W - determines junction temperature rise above ambient under given power load |
| Operating Temperature | −65°C to +150°C - supports industrial and under-hood automotive environments |
| Package | SOD323F - 2-pin surface-mount outline with 0.25–0.35mm lead width and 2.3–2.7mm height |
Pinout & Package
Package: SOD323F - ultra-small plastic molded case with matte tin-plated copper alloy leads, moisture sensitivity level 1, UL 94V-0 rated, weight ≈0.004g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node in shunt regulator configuration; forms return path for IZ |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated node; supplies stable VZ when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% (9.12–9.59V range) - enables accurate voltage setting without external trimming |
| Low dynamic impedance | ≤30Ω at 1kHz - minimizes output ripple in noise-sensitive analog references |
| Automated assembly compatibility | SOD323F footprint with defined pad layout (X=0.71mm, Y=0.403mm) - ensures reliable reflow yield |
| Environmental compliance | Fully RoHS 3 compliant, halogen- and antimony-free ("Green") - meets global regulatory requirements |
| Thermal performance | RθJA = 250°C/W on standard FR-4 - allows predictable derating above +25°C ambient |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck converter feedback loop using optocoupler-coupled TL431 alternative. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 9.12–9.59V threshold to control primary-side PWM duty cycle. Use Value: Tight ±2.5% VZ tolerance reduces need for post-production calibration; low ZZT improves transient response to load steps. |
Use Scenario: Protecting microcontroller I/O pins or ADC inputs from ESD-induced voltage spikes exceeding 10V. IC Role / Device Role / Timing Role: Fast-acting clamp limiting rail voltage to ≤9.59V during transient events. Use Value: 500mW power rating absorbs short-duration surges; cathode-band polarity ensures correct orientation in series-clamp topology. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|
Use Scenario: Biasing bridge sensors or scaling thermistor outputs into 0–10V analog input ranges. IC Role / Device Role / Timing Role: Stable excitation voltage source for ratiometric measurements requiring <0.5% drift over −40°C to +125°C. Use Value: Predictable +6.5mV/°C TC enables software compensation; low IR avoids loading high-impedance sensor bridges. |
Use Scenario: Providing reference voltage for LIN transceiver biasing or door module voltage monitoring circuitry. IC Role / Device Role / Timing Role: AEC-Q200-ready voltage reference supporting PPAP documentation and IATF 16949 manufacturing traceability. Use Value: Qualified for automotive change control processes; green molding compound meets OEM halogen-free material specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10LT1G | VZ = 9.8–10.2V @ 5mA; higher ZZT (≥50Ω); SOT-23 package | Lower power rating (350mW); less suitable for sustained 20mA operation | Select when board space permits larger SOT-23 and tighter VZ tolerance is secondary to cost |
| MMSZ5240B-7-F | VZ = 10.0–10.6V @ 20mA; ZZT ≤ 20Ω; SOD-123 package | Higher VZ center point; 10% wider tolerance (±5%); different thermal profile (RθJA ≈ 300°C/W) | Choose for legacy designs using SOD-123 footprint or where 10.3V nominal is acceptable |
Compared with BZX84-C10LT1G and MMSZ5240B-7-F, DDZ10ASF-7 offers superior VZ accuracy (±2.5% vs ±5%) and lower thermal resistance-critical for stable regulation in compact, thermally constrained layouts.
Availability
DDZ10ASF-7 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and automotive-compliant sourcing.
Supply support for DDZ10ASF-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 DDZxxASF series belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and clamping in space-constrained, thermally demanding applications including automotive body electronics and industrial power systems.
FAQ
What is the maximum continuous Zener current for DDZ10ASF-7 at +85°C ambient?
At +85°C ambient, the power derating curve (Figure 1) shows 0.4W maximum dissipation. With VZ ≈ 9.4V, the maximum continuous Zener current is approximately 42.5mA. This assumes mounting on FR-4 with 10mm × 10mm copper pads per datasheet Note 5; actual current must be reduced if board copper area is smaller.
Does DDZ10ASF-7 have AEC-Q200 qualification?
DDZ10ASF-7 is not individually AEC-Q200 certified, but it is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request. The datasheet states that automotive-grade change control-including AEC-Q200 qualification-is available for this part number when ordered through Diodes' automotive business channel with appropriate qualification testing.
How does the SOD323F package affect solder joint reliability compared to SOD-123?
SOD323F has narrower leads (0.25–0.35mm vs SOD-123's 0.45–0.55mm) and shorter lead length, reducing mechanical stress during thermal cycling. Its smaller footprint also lowers thermal mass, enabling more uniform reflow profiles-but requires tighter stencil aperture control to avoid bridging. IPC-7351B-compliant land patterns are validated for >99.5% first-pass yield in high-volume SMT lines.
Can DDZ10ASF-7 replace DDZ10BSF in an existing design?
Yes-DDZ10ASF-7 and DDZ10BSF share identical SOD323F packaging, thermal characteristics, and electrical specs except for VZ range: DDZ10ASF-7 is 9.12–9.59V while DDZ10BSF is 9.41–9.90V. If the original design targets the lower end of the 10V range and tolerates ±2.5% variation, substitution is electrically safe and requires no layout changes.
DDZ10ASF-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):
- 9.36 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 8.66 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
DDZ10ASF-7 FAQ
1.How can I place an order for DDZ10ASF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ10ASF-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 DDZ10ASF-7 reliable?
The price and inventory of DDZ10ASF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ10ASF-7 is usually 5 days.
3.What payment methods are accepted for DDZ10ASF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ10ASF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ10ASF-7?
DDZ10ASF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ10ASF-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 DDZ10ASF-7?
For technical support, including DDZ10ASF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ10ASF-7 requirements.
6.How does Aetrix verify that DDZ10ASF-7 is sourced from the original manufacturer or authorized distributors?
All DDZ10ASF-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 DDZ10ASF-7 meets industry standards.
7.What is the process for return or replacement of DDZ10ASF-7?
All DDZ10ASF-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ10ASF-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 DDZ10ASF-7 part is unused and in its original packaging.
Return procedure for DDZ10ASF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ10ASF-7 Tags
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