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Diodes Incorporated DDZ13ASF-7
- Part No.:
- DDZ13ASF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
DDZ13ASF-7.pdf
- Description:
- DIODE ZENER 12.43V 500MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:15,965
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Product details
Overview
DDZ13ASF-7 from Diodes Incorporated is a precision 0.5W surface-mount Zener diode in SOD323F package, delivering tightly regulated 12.11–12.75V zener voltage at 10mA test current, with 35Ω max zener impedance and 0.07µA reverse leakage at 11.5V, used for voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the DDZ13ASF-7 datasheet, DDZ13ASF-7 pinout, DDZ13ASF-7 application, or DDZ13ASF-7 equivalent, key selection criteria include zener voltage tolerance (±2.6%), thermal resistance (250°C/W), RoHS-compliant green molding compound, and AEC-Q200 readiness for automotive-grade stability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its 10mA zener test current and low 35Ω dynamic impedance ensure minimal voltage deviation during transient load shifts.
Designed for high-reliability PCB mounting, it features matte tin-annealed copper alloy terminals solderable per MIL-STD-202, Method 208, and moisture sensitivity level 1 per J-STD-020 - enabling robust reflow compatibility without baking requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.11–12.75 V @ IZT = 10 mA - defines precise regulation window for feedback sensing |
| Power Dissipation (PD) | 500 mW on FR-4 PCB - supports continuous operation in compact power rails |
| Zener Impedance (ZZT) | ≤35 Ω @ f = 1 kHz - ensures low AC ripple coupling into reference node |
| Reverse Leakage (IR) | 0.07 µA @ VR = 11.5 V - minimizes error current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 250 °C/W - enables thermal design margin up to +125°C ambient with standard pad layout |
| Operating Temperature | −65 to +150 °C - qualified for extended industrial and under-hood automotive environments |
Pinout & Package
Package: SOD323F - ultra-compact 2-pin surface-mount plastic package (2.50 mm × 1.70 mm × 1.25 mm), molded with halogen/antimony-free green compound (UL 94V-0 rated), cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or low-side reference point in shunt regulator topology |
| Cathode | Zener breakdown terminal / voltage reference 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 at 10 mA - reduces need for post-calibration in analog feedback paths |
| Automated assembly compatibility | SOD323F footprint with J-STD-020 Level 1 moisture rating - eliminates pre-bake and supports high-speed pick-and-place |
| Environmental compliance | Fully RoHS 3 compliant, halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets global sustainability mandates |
| Thermal performance | 250°C/W junction-to-ambient resistance on standard FR-4 - allows direct thermal modeling without heatsinking |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides stable voltage reference for optocoupler-based feedback in isolated DC-DC converters. IC Role / Device Role / Timing Role: Shunt reference element setting primary-side regulation threshold via secondary-side error amplifier. Use Value: Tight 12.11–12.75V range and 35Ω impedance minimize output voltage drift across line/load/temperature variations. |
Use Scenario: Supplies excitation voltage to bridge-based pressure/temperature transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric sensor biasing, referenced to ADC's internal reference. Use Value: Sub-0.1µA leakage at 11.5V prevents loading errors in high-impedance sensor bridges. |
| Automotive ECU Voltage Clamp | USB-C PD Port Protection |
Use Scenario: Clamps transient overvoltage on 12V rail inputs of engine control units exposed to load dump events. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing surge energy before downstream LDOs or MCUs. Use Value: −65°C to +150°C operating range and AEC-Q200 readiness support under-hood deployment without derating. |
Use Scenario: Protects USB-C power delivery controller VBUS monitoring circuitry from accidental 20V adapter surges. IC Role / Device Role / Timing Role: Secondary clamp limiting sensed voltage to safe ADC input range during fault conditions. Use Value: 500mW dissipation capacity handles short-duration 20V transients without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDZ13BSF-7 | VZ = 12.55–13.21 V, same package and PD | Higher nominal voltage; tighter ±2.5% tolerance but wider absolute range | Select when system requires 12.8V nominal reference with lower tempco drift |
| BZX84-C13-7-F | VZ = 12.0–13.5 V, SOT-23 package, 300 mW PD, 40Ω ZZT | Larger footprint, lower power rating, higher impedance | Choose only if SOT-23 is mandated and 500mW dissipation is not required |
Compared with DDZ13BSF-7, this part offers lower nominal VZ and better low-voltage stability; versus BZX84-C13-7-F, it delivers 67% higher power handling and 12.5% lower dynamic impedance in a smaller SOD323F form factor.
Availability
DDZ13ASF-7 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, automotive ECUs, and USB-C PD protection circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DDZ13ASF-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 belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and clamping in space-constrained, thermally demanding applications including automotive, industrial, and communications infrastructure.
FAQ
What is the maximum continuous reverse voltage that DDZ13ASF-7 can safely regulate?
DDZ13ASF-7 is rated for continuous reverse operation up to its specified zener voltage range of 12.11–12.75 V at 10 mA test current. It maintains regulation within this band under steady-state conditions; exceeding 12.75 V risks increased power dissipation beyond 500 mW unless current is strictly limited by external series resistance.
Does DDZ13ASF-7 meet AEC-Q200 stress testing requirements?
DDZ13ASF-7 is manufactured in IATF 16949 certified facilities and supports PPAP documentation. While not explicitly listed as AEC-Q200 qualified in public documentation, its −65°C to +150°C operating range, green halogen-free construction, and qualification-ready process flow make it suitable for automotive applications requiring change-controlled components - formal AEC-Q200 validation must be confirmed per customer-specific PPAP submission.
How does the SOD323F package affect thermal performance compared to SOD-123?
The SOD323F package has a smaller die-pad area than SOD-123, resulting in higher thermal resistance: 250°C/W vs. ~200°C/W for equivalent SOD-123 Zeners. This requires stricter attention to PCB copper area (10 mm × 10 mm minimum recommended) and limits sustained power handling - the 500 mW rating assumes exact FR-4 board dimensions per datasheet Note 5.
Can DDZ13ASF-7 be used in series or parallel configurations for higher voltage or current capability?
No - Zener diodes like DDZ13ASF-7 exhibit unit-to-unit VZ variation and differing temperature coefficients, making series or parallel connection unreliable. Parallel use causes current hogging; series stacking introduces cumulative tolerance and tempco errors. For higher voltage, select a single higher-VZ part (e.g., DDZ15ASF-7); for higher current, use an active shunt regulator or discrete transistor-assisted design.
DDZ13ASF-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):
- 12.43 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 70 nA @ 11.5 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-323F
DDZ13ASF-7 FAQ
1.How can I place an order for DDZ13ASF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ13ASF-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 DDZ13ASF-7 reliable?
The price and inventory of DDZ13ASF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ13ASF-7 is usually 5 days.
3.What payment methods are accepted for DDZ13ASF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ13ASF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ13ASF-7?
DDZ13ASF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ13ASF-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 DDZ13ASF-7?
For technical support, including DDZ13ASF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ13ASF-7 requirements.
6.How does Aetrix verify that DDZ13ASF-7 is sourced from the original manufacturer or authorized distributors?
All DDZ13ASF-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 DDZ13ASF-7 meets industry standards.
7.What is the process for return or replacement of DDZ13ASF-7?
All DDZ13ASF-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ13ASF-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 DDZ13ASF-7 part is unused and in its original packaging.
Return procedure for DDZ13ASF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ13ASF-7 Tags
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