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Diodes Incorporated SF2DDF-13
- Part No.:
- SF2DDF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
SF2DDF-13.pdf
- Description:
- DIODE GEN PURP 200V 2A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,995
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Product details
Overview
SF2DDF-13 from Diodes Incorporated is a 200 V, 2.0 A surface-mount super-fast rectifier in the D-FLAT package, optimized for secondary rectification and freewheeling in high-frequency AC-DC and DC-DC converters operating at elevated temperatures. It delivers 1.1 V max forward voltage at 2 A, 5 µA max reverse leakage at 25°C, 35 ns reverse recovery time, and is rated for -55°C to +150°C operation - enabling use in compact, thermally constrained consumer power adapters.
For engineers reviewing the SF2DDF-13 datasheet, SF2DDF-13 pinout, SF2DDF-13 application, or SF2DDF-13 equivalent, key selection criteria include its 200 V VRRM rating, low 1.1 V VF at 2 A, 35 ns tRR, thermal resistance (RθJT = 30°C/W), and D-FLAT package compatibility with high-density PCB layouts in space-constrained power supplies.
Technical Context
The SF2DDF-13 is a silicon planar epitaxial super-fast recovery rectifier designed for high-efficiency switching power conversion. Its 35 ns reverse recovery time and low 1.1 V forward voltage minimize conduction and switching losses in 100–500 kHz DC-DC topologies.
It operates with a maximum junction temperature of +150°C and exhibits only 5 µA reverse leakage at 25°C and rated 200 V blocking, supporting stable performance in thermally demanding environments without derating below 88°C terminal temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines safe AC-DC output stage blocking capability |
| IO @ TT=88°C | 2.0 A - Continuous average forward current under defined thermal conditions on FR-4 PCB |
| VF @ IF=2A | 1.1 V max - Low conduction loss enabling >90% efficiency in 12 V/2 A secondary-side rectification |
| tRR | 35 ns - Enables stable operation in 300–500 kHz flyback and forward converters without oscillation |
| IR @ 25°C | 5 µA max - Minimal leakage ensures low standby power in energy-efficient chargers meeting DOE Level VI |
| RθJT | 30 °C/W - Junction-to-terminal thermal resistance supports direct copper-pad mounting for thermal management |
| TJ Range | -55°C to +150°C - Full operational range validated for consumer-grade power supplies across environmental stress tests |
Pinout & Package
Package: D-FLAT - ultra-thin (max 1.10 mm height), surface-mount plastic package with matte tin-plated copper leadframe, UL 94V-0 rated molding compound, and cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to switch node or transformer secondary winding; requires low-inductance layout for EMI control |
| Cathode | Forward current exit / reverse blocking terminal | Marked by cathode band; ties to output capacitor positive rail; critical for minimizing loop area in high-dI/dt paths |
Key Features
| Feature | Design Value |
|---|---|
| Superfast recovery (35 ns) | Reduces switching loss and ringing in high-frequency SMPS, enabling smaller snubbers and lower EMI filter cost |
| Low VF (1.1 V @ 2 A) | Lowers conduction loss by ~15% vs. standard fast rectifiers, improving thermal margin in sealed adapters |
| Glass passivated junction | Ensures long-term reliability under humidity and thermal cycling per JESD22-A101, A108 |
| D-FLAT package footprint | 0.9–1.1 mm height enables <1.5 mm board stack-up in ultra-slim USB-C PD adapters |
Applications
| USB-C Power Delivery Adapters | Smartphone Wall Chargers |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 18–65 W flyback converters with 300 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; recovers before next switching cycle begins. Use Value: 35 ns tRR prevents cross-conduction loss and allows tighter duty-cycle control versus 75 ns alternatives. | Use Scenario: Output rectification in compact 5–10 W AC-DC adapters powering IoT sensors and wearables. IC Role / Device Role / Timing Role: Unidirectional current path from transformer secondary to bulk capacitor; blocks reverse current during flyback reset. Use Value: 1.1 V VF reduces heat generation in sealed enclosures where airflow is absent and thermal derating is critical. |
| LED Driver Secondary Rectification | Industrial DC-DC Module Freewheeling |
Use Scenario: Constant-current LED driver output stage delivering 350 mA–1 A to high-brightness LEDs in enclosed luminaires. IC Role / Device Role / Timing Role: Rectifies high-frequency AC from resonant LLC transformer secondary; handles repetitive surge currents up to 50 A IFSM. Use Value: 5 µA IR at 25°C minimizes no-load power draw, supporting Energy Star v2.0 standby requirements. | Use Scenario: Freewheeling path in isolated 24 V input, 5 V/3 A industrial DC-DC modules operating continuously at +85°C ambient. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current during high-side switch off-time in buck-derived topologies. Use Value: RθJT = 30°C/W enables direct thermal coupling to copper pour, sustaining 2 A load without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB220-E3/54 (Vishay) | 200 V VRRM, 2 A IO, 1.1 V VF, but 50 ns tRR and higher 10 µA IR at 25°C | Less suitable for >250 kHz designs due to slower recovery; higher leakage increases standby loss | Acceptable for cost-sensitive 60–120 kHz applications where efficiency is secondary to BOM cost |
| ES2D (ON Semiconductor) | 200 V VRRM, 2 A IO, 1.15 V VF, 35 ns tRR, but RθJA = 70°C/W (vs. 56°C/W for SF2DDF-13) | Higher thermal resistance limits usable current in confined spaces without enhanced cooling | Preferred where lead-free compliance is mandatory and thermal pad access is unrestricted |
Compared with SB220-E3/54 and ES2D, SF2DDF-13 offers the lowest combination of VF (1.1 V), tRR (35 ns), and RθJT (30°C/W), making it optimal for thermally dense, high-frequency consumer power supplies where size, efficiency, and reliability are co-prioritized.
Availability
SF2DDF-13 is available at Aetrix Electronics and suitable for USB-C PD adapters, smartphone wall chargers, and industrial DC-DC modules requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing traceability.
Supply support for SF2DDF-13 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, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.
The SF2DDF-13 belongs to Diodes' SF2x series of super-fast rectifiers, engineered specifically for high-efficiency, high-temperature secondary-side rectification in compact AC-DC and DC-DC converters targeting energy-efficient consumer electronics.
FAQ
What is the maximum allowable junction temperature for SF2DDF-13?
The SF2DDF-13 has a specified operating junction temperature range of -55°C to +150°C. Its absolute maximum TJ is +150°C, validated per JEDEC JESD22-A108. Sustained operation above this limit risks permanent degradation of the glass-passivated junction and increased IR drift.
Is SF2DDF-13 compatible with lead-free reflow soldering profiles?
Yes - SF2DDF-13 features a matte tin finish over copper leadframe and is qualified for lead-free reflow per IPC/JEDEC J-STD-020, including peak temperatures up to 260°C for 30 seconds. Its D-FLAT package meets MSL Level 1 moisture sensitivity requirements.
How does the D-FLAT package affect PCB layout for thermal performance?
The D-FLAT package's exposed copper terminals allow direct thermal connection to large copper pours. For optimal RθJT, the cathode pad should be ≥0.2" × 0.25" on 2 oz FR-4, matching the datasheet test condition - increasing pad area beyond this yields diminishing returns due to epoxy mold compound thermal resistance.
Can SF2DDF-13 replace SF2GDF-13 or SF2JDF-13 in existing designs?
No - SF2DDF-13 (200 V) is not a drop-in replacement for SF2GDF-13 (400 V) or SF2JDF-13 (600 V). While pinout and package are identical, substituting lower VRRM parts risks catastrophic failure under transient overvoltage or reflected spikes in higher-input designs.
SF2DDF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF2DDF-13 FAQ
1.How can I place an order for SF2DDF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SF2DDF-13 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 SF2DDF-13 reliable?
The price and inventory of SF2DDF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF2DDF-13 is usually 5 days.
3.What payment methods are accepted for SF2DDF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF2DDF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF2DDF-13?
SF2DDF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF2DDF-13 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 SF2DDF-13?
For technical support, including SF2DDF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF2DDF-13 requirements.
6.How does Aetrix verify that SF2DDF-13 is sourced from the original manufacturer or authorized distributors?
All SF2DDF-13 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 SF2DDF-13 meets industry standards.
7.What is the process for return or replacement of SF2DDF-13?
All SF2DDF-13 units undergo pre-shipment inspection (PSI). If there is an issue with SF2DDF-13, 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 SF2DDF-13 part is unused and in its original packaging.
Return procedure for SF2DDF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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