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Diodes Incorporated SF1DDF-13
- Part No.:
- SF1DDF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
SF1DDF-13.pdf
- Description:
- DIODE GEN PURP 200V 1A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,777
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Product details
Overview
SF1DDF-13 from Diodes Incorporated is a 200 V, 1.0 A surface-mount superfast rectifier diode in D-FLAT package, designed for secondary rectification and freewheeling in high-frequency AC-DC and DC-DC converters. It delivers 0.98 V forward voltage at 1 A, 35 ns reverse recovery time, 5 µA reverse leakage at 25°C, and operates up to +150°C junction temperature-ideal for compact, thermally constrained consumer power adapters.
For engineers reviewing the SF1DDF-13 datasheet, SF1DDF-13 pinout, SF1DDF-13 application, or SF1DDF-13 equivalent, key selection criteria include its 200 V VRRM rating, low VF for reduced conduction loss, ultrafast tRR for high-switching-efficiency topologies, and D-FLAT thermal performance on FR-4 PCBs.
Technical Context
This superfast rectifier uses a planar epitaxial silicon PN junction with glass passivation, enabling stable operation under repetitive surge currents up to 30 A (8.3 ms half-sine). Its 35 ns reverse recovery time is measured under standardized IF = 0.5 A / IR = 1 A / IRR = 0.25 A conditions, supporting >100 kHz switching in flyback and boost PFC stages.
The D-FLAT package provides low thermal resistance (RθJT = 36°C/W) and minimal parasitic capacitance (CT = 20 pF @ 1 MHz, 4 V), critical for minimizing switching noise and EMI in compact adapter designs operating at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin in 12–24 V output DC-DC secondaries. |
| IO @ TT=110°C | 1.0 A - Average forward current derated for thermal management on standard FR-4 PCB; enables continuous operation without heatsink. |
| VF @ IF=1A | 0.98 V - Low conduction loss yielding ~0.98 W dissipation at full load; reduces thermal stress in space-constrained adapters. |
| tRR | 35 ns - Ultrafast recovery minimizes reverse recovery charge (Qrr), lowering switching losses and EMI in >100 kHz converters. |
| IR @ 25°C | 5 µA - Low leakage preserves efficiency in standby modes and high-impedance bias networks. |
| RθJA | 87 °C/W - Thermal resistance from junction to ambient on specified 0.4" × 0.5" 2 oz copper pad; informs board-level thermal design. |
Pinout & Package
Package: D-FLAT - ultra-thin (max 1.10 mm height), surface-mount plastic case with cathode band marking; UL 94V-0 rated, halogen/antimony-free, lead-free (RoHS 3 compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to switch node or transformer secondary winding; carries full load current during conduction phase. |
| Cathode | Forward current exit node | Connected to output capacitor or filter inductor; polarity marked by visible band on package top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Superfast recovery (tRR = 35 ns) | Enables efficient operation in high-frequency flyback and resonant converters without snubber circuits. |
| Glass passivated junction | Ensures long-term reliability and stable electrical parameters under thermal cycling and humidity exposure. |
| D-FLAT low-profile package | 0.90–1.10 mm height allows integration into ultra-slim AC-DC adapters and USB-C PD chargers. |
| Lead-free & "Green" construction | Meets RoHS 3, halogen-free (<900 ppm Br/Cl, <1000 ppm Sb), and UL 94V-0 flammability requirements. |
Applications
| USB-C Power Delivery Adapter | Smartphone Quick-Charge Circuit |
|---|---|
Use Scenario: Secondary-side rectification in 20–100 W GaN-based USB-C PD adapters operating at 100–300 kHz. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side switch off-time; synchronously replaced only in advanced designs. Use Value: 0.98 V VF and 35 ns tRR reduce conduction + switching losses, improving efficiency by ≥0.5% over standard fast rectifiers at 25°C ambient. | Use Scenario: Output rectification in compact 18–30 W QC 3.0/4.0 wall adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Unidirectional current path from transformer secondary to bulk capacitor; handles peak currents up to 30 A surges. Use Value: RθJA = 87 °C/W and 150°C max TJ allow reliable operation without derating at 50°C ambient, extending product lifetime. |
| LED Driver Secondary Rectifier | Industrial DC-DC Converter Freewheeling |
Use Scenario: Constant-current LED driver output stage delivering 350–700 mA to 12–48 V strings in enclosed luminaires. IC Role / Device Role / Timing Role: Rectifies high-frequency transformer output; blocks reverse voltage during MOSFET on-time. Use Value: 5 µA IR at 25°C prevents standby power drift; 200 V VRRM supports 36 V nominal outputs with 2× safety margin. | Use Scenario: Freewheeling path in 24 V input industrial DC-DC modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current when main switch is off; withstands 30 A surge transients. Use Value: Glass passivation and -55°C to +150°C rating ensure parametric stability across extended temperature cycles in factory automation equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar superfast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-TB | VRRM = 200 V, VF = 0.85 V @ 1 A, tRR = 50 ns, DO-214AA package | Higher VF but lower cost; larger footprint and higher RθJA (100°C/W) limits power density | Prefer for cost-sensitive, non-compact designs where 0.13 V lower VF is acceptable |
| ES1D-E3/54 | VRRM = 200 V, VF = 0.95 V @ 1 A, tRR = 35 ns, SMA package | Same tRR and VF, but SMA has 2× higher RθJA (170°C/W); requires larger copper area | Acceptable only with enhanced PCB thermal relief; not suitable for <5 mm height constraints |
Compared with SB120-TB and ES1D-E3/54, SF1DDF-13 uniquely combines D-FLAT's ultra-low profile (1.1 mm max), industry-leading RθJT (36°C/W), and verified 35 ns tRR-making it optimal for next-gen slim adapters where board space and thermal headroom are simultaneously constrained.
Availability
SF1DDF-13 is available at Aetrix Electronics and suitable for USB-C PD adapters, smartphone quick-charge circuits, and industrial DC-DC converters requiring stable component supply, consistent parametric performance across production lots, and RoHS 3-compliant sourcing.
Supply support for SF1DDF-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The SF1x series belongs to Diodes' high-reliability superfast rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in thermally demanding consumer and industrial applications.
FAQ
What is the maximum junction temperature and how is it validated?
The SF1DDF-13 has a rated operating junction temperature range of –55°C to +150°C, confirmed per JEDEC JESD22-A108. This rating is validated through accelerated life testing under thermal cycling (–55°C to +150°C, 1000 cycles) and high-temperature operating life (HTOL) at 150°C/1000 hours with electrical monitoring, per Diodes Incorporated qualification standards.
Is SF1DDF-13 compatible with lead-free reflow profiles?
Yes. SF1DDF-13 uses matte tin-plated copper leadframe terminals and complies with IPC/JEDEC J-STD-020 moisture sensitivity level 1. It supports standard lead-free reflow profiles with peak temperatures up to 260°C (per JEDEC Level 1), and is qualified for both wave and selective soldering processes.
How does the D-FLAT package compare thermally to SMA or DO-214AA?
The D-FLAT package achieves RθJT = 36°C/W, significantly lower than SMA (RθJT ≈ 60°C/W) and DO-214AA (RθJT ≈ 50°C/W), due to its direct thermal path from die to exposed copper terminal. On identical 0.4" × 0.5" 2 oz pads, D-FLAT runs ~12°C cooler than SMA at 1 A DC, enabling higher power density without forced air.
Can SF1DDF-13 replace SF1GDF-13 or SF1JDF-13 in existing designs?
No-SF1DDF-13 (200 V) is not a drop-in replacement for SF1GDF-13 (400 V) or SF1JDF-13 (600 V). While pin-compatible and same package, its lower VRRM requires circuit review: transformer turns ratio, clamp voltage, and transient overvoltage margins must be re-verified to avoid reverse breakdown under worst-case line/load conditions.
SF1DDF-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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 980 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF1DDF-13 FAQ
1.How can I place an order for SF1DDF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SF1DDF-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 SF1DDF-13 reliable?
The price and inventory of SF1DDF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF1DDF-13 is usually 5 days.
3.What payment methods are accepted for SF1DDF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF1DDF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF1DDF-13?
SF1DDF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF1DDF-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 SF1DDF-13?
For technical support, including SF1DDF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF1DDF-13 requirements.
6.How does Aetrix verify that SF1DDF-13 is sourced from the original manufacturer or authorized distributors?
All SF1DDF-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 SF1DDF-13 meets industry standards.
7.What is the process for return or replacement of SF1DDF-13?
All SF1DDF-13 units undergo pre-shipment inspection (PSI). If there is an issue with SF1DDF-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 SF1DDF-13 part is unused and in its original packaging.
Return procedure for SF1DDF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF1DDF-13 Tags
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Diodes Incorporated
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