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Taiwan Semiconductor Corporation SF11G R0G
- Part No.:
- SF11G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SF11G R0G.pdf
- Description:
- DIODE GEN PURP 50V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,727
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Product details
Overview
SF11G R0G from Taiwan Semiconductor is a 1 A, 50 V super fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 35 ns reverse recovery time, 0.95 V forward voltage at 1 A and 25 °C, and AEC-Q101 qualification option. It serves as a freewheeling or output rectifier in compact DC-DC converters.
For engineers reviewing the SF11G R0G datasheet, SF11G R0G pinout, SF11G R0G application, or SF11G R0G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), forward surge current rating (30 A), junction-to-lead thermal resistance (20 °C/W), and RoHS/halogen-free compliance for automotive and industrial power supplies.
Technical Context
The SF11G R0G employs a single-die silicon PN junction optimized for super-fast switching with low stored charge. Its 35 ns trr and 0.95 V VF at 1 A enable high-efficiency operation in 100–500 kHz switching topologies.
Designed for surface-mount compatible through-hole assembly, it uses pure tin-plated leads compliant with J-STD-002 and meets JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-204AL body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or buck output stages |
| IF | 1 A continuous - Average forward current rating; sets maximum steady-state conduction capability |
| IFSM | 30 A - Non-repetitive surge current handling; supports inrush and transient overload without failure |
| trr | 35 ns - Reverse recovery time; enables efficient high-frequency rectification with minimal switching loss |
| VF @ 1A, 25°C | 0.95 V - Forward voltage drop; directly determines conduction loss and thermal load at rated current |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables direct heatsinking via PCB copper or lead frame for thermal management |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood or enclosed industrial environments |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode-indicating band; leads are pure tin-plated and solderable per J-STD-002. Weight: 0.350 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential node (e.g., switch node in buck, secondary winding in flyback) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or positive bus; blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery (trr = 35 ns) | Reduces switching loss and EMI generation in 100–500 kHz SMPS designs |
| AEC-Q101 qualified variant available | Validated for automotive power modules requiring stress-tested reliability |
| RoHS and halogen-free (IEC 61249-2-21) | Meets global environmental compliance for consumer, industrial, and automotive end equipment |
| Junction-to-lead thermal resistance = 20 °C/W | Enables effective heat transfer to PCB copper or chassis without external heatsink |
Applications
| DC-DC Buck Converter Output Rectification | Automotive Body Control Module Power Supply |
|---|---|
Use Scenario: 12 V input to 3.3 V/5 V output conversion in space-constrained embedded systems. IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch off-time; handles 1 A average load current. Use Value: 0.95 V VF minimizes conduction loss; 35 ns trr prevents cross-conduction loss with synchronous MOSFETs. | Use Scenario: Power conditioning for microcontrollers and CAN transceivers in door modules or lighting nodes. IC Role / Device Role / Timing Role: Freewheeling diode across relay coils and motor drivers; clamps inductive kickback. Use Value: 30 A IFSM withstands relay coil turn-off surges; AEC-Q101-qualified variants support automotive qualification. |
| Industrial AC-DC Adapter Secondary Side | USB-C PD Adapter Auxiliary Rail Rectification |
Use Scenario: 24 V output stage of universal-input offline adapter delivering up to 2 A. IC Role / Device Role / Timing Role: Primary output rectifier in quasi-resonant flyback topology. Use Value: 50 V VRRM provides sufficient margin above 24 V output; DO-41 package fits legacy through-hole layouts. | Use Scenario: +5 V auxiliary rail rectification in multi-output USB-C PD adapters. IC Role / Device Role / Timing Role: Low-loss discrete rectifier replacing Schottky where higher VR is needed. Use Value: 0.95 V VF competitive with 45 V Schottkys; 150 °C TJ rating supports high-density thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | Same 1 A / 600 V rating but higher VF (1.7 V typ); trr = 35 ns; TO-220AC package | Higher power dissipation requires heatsink; unsuitable for space-constrained DO-41 footprints | Select when higher VR margin or TO-220 mounting is required; not drop-in for SF11G R0G PCB layout |
| ON Semi MUR105 | 1 A / 50 V; trr = 50 ns; VF = 0.93 V; same DO-41 package; no AEC-Q101 option | Lacks automotive qualification; slightly slower recovery increases switching loss at >200 kHz | Use in cost-sensitive industrial adapters where AEC-Q101 is not mandated |
Compared with STTH1R06U and MUR105, the SF11G R0G offers optimal balance of low VF (0.95 V), fast trr (35 ns), and DO-41 compatibility-enabling compact, thermally efficient, and automotive-qualified designs without layout change.
Availability
SF11G R0G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, automotive-grade reliability, and RoHS-compliant packaging.
Supply support for SF11G R0G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.
The SF11G R0G belongs to TSC's SFxG super fast rectifier family, engineered specifically for high-frequency switching power supplies where low forward voltage and rapid recovery are critical to efficiency and thermal performance.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for SF11G R0G?
The SF11G R0G has a VRRM rating of 50 V, meaning it can reliably block up to 50 V of reverse voltage in repetitive operation. This rating ensures safe use in 24 V output DC-DC converters with adequate derating margin. Exceeding this voltage risks avalanche breakdown and permanent damage to the SF11G R0G junction.
Is SF11G R0G suitable for automotive applications?
Yes - while the base SF11G R0G is not AEC-Q101 qualified, Taiwan Semiconductor offers an AEC-Q101-qualified variant (e.g., SF11GH) in the same family. The SF11G R0G shares identical electrical specs and DO-41 mechanical form, making it suitable for non-safety-critical automotive subsystems when paired with appropriate system-level validation.
What is the forward voltage (VF) of SF11G R0G at 1 A and 25 °C?
The SF11G R0G exhibits a typical forward voltage of 0.95 V at 1 A and 25 °C, measured under pulsed conditions (PW = 0.3 ms). This low VF reduces conduction losses and improves overall power supply efficiency, especially in high-duty-cycle applications like buck converter outputs.
Does SF11G R0G have a specified reverse recovery time (trr)?
Yes - the SF11G R0G has a maximum reverse recovery time of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultrafast trr minimizes switching losses and EMI in high-frequency power converters, distinguishing it from standard recovery rectifiers with trr > 100 ns.
What package type does SF11G R0G use, and are its leads lead-free?
SF11G R0G uses the DO-204AL (DO-41) axial-leaded package with pure tin-plated leads compliant with J-STD-002 solderability requirements. It is RoHS-compliant and halogen-free per IEC 61249-2-21, confirming lead-free construction and environmental compliance for global manufacturing.
SF11G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF11G R0G FAQ
1.How can I place an order for SF11G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF11G R0G 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 SF11G R0G reliable?
The price and inventory of SF11G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF11G R0G is usually 5 days.
3.What payment methods are accepted for SF11G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF11G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF11G R0G?
SF11G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF11G R0G 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 SF11G R0G?
For technical support, including SF11G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF11G R0G requirements.
6.How does Aetrix verify that SF11G R0G is sourced from the original manufacturer or authorized distributors?
All SF11G R0G 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 SF11G R0G meets industry standards.
7.What is the process for return or replacement of SF11G R0G?
All SF11G R0G units undergo pre-shipment inspection (PSI). If there is an issue with SF11G R0G, 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 SF11G R0G part is unused and in its original packaging.
Return procedure for SF11G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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