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Taiwan Semiconductor Corporation SFAF2005GH
- Part No.:
- SFAF2005GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2005GH.pdf
- Description:
- 35NS, 20A, 300V, SUPER FAST RECO
- Quantity:
- Payment:
- Shipping:
Inventory:5,352
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Product details
Overview
SFAF2005GH from Taiwan Semiconductor is a 20 A, 300 V repetitive peak reverse voltage (VRRM) super fast rectifier in ITO-220AC package, featuring 1.300 V forward voltage at 20 A and 25°C, 35 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary output rectifier in high-frequency DC-DC converters.
For engineers reviewing the SFAF2005GH datasheet, SFAF2005GH pinout, SFAF2005GH application, or SFAF2005GH equivalent, key selection criteria include its 300 V VRRM, 200 A non-repetitive surge rating, 3°C/W junction-to-case thermal resistance, AEC-Q101 qualification status, and ITO-220AC mounting compatibility with heatsink interfaces.
Technical Context
This super fast rectifier uses a glass passivated silicon die optimized for switching-mode power supplies operating above 50 kHz. Its 35 ns trr and low Qrr minimize switching losses during freewheeling and flyback transitions, while the 3°C/W RθJC enables efficient thermal transfer to external heatsinks under continuous 20 A conduction.
The device supports single-die configuration with unidirectional conduction, rated for -55°C to +150°C junction temperature, and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its ITO-220AC molded package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in DC-DC stages |
| IF | 20 A - Continuous average forward current; sets minimum heatsink sizing for 100% duty-cycle operation |
| IFSM | 200 A - Non-repetitive surge rating (8.3 ms half-sine); determines robustness against startup/load-dump transients |
| VF | 1.300 V @ 20 A, 25°C - Forward drop directly impacts conduction loss and thermal design margin |
| trr | 35 ns - Reverse recovery time; critical for minimizing switching loss and EMI in >100 kHz topologies |
| RθJC | 3°C/W - Junction-to-case thermal resistance; enables precise thermal modeling when mounted to heatsink |
| CJ | 150 pF @ 1 MHz, 4 V - Junction capacitance affects high-frequency noise coupling and snubber design |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with electrically isolated tab (dielectric barrier between die and mounting surface), matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to high-side switching node or transformer secondary; must withstand full VRRM during off-state |
| Cathode (Lead 2) | Output current exit point | Connected to output capacitor or load; carries full IF and defines reference for control loop sensing |
| Tab (Isolated) | Thermal interface only | Electrically isolated mounting surface; enables direct heatsink attachment without insulating washer |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, UHAST, etc.) |
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or condensing environments |
| Low VF / high efficiency | Reduces conduction loss by ~15% vs. standard fast rectifiers at 20 A, lowering thermal load |
| High surge capability (200 A) | Withstands repeated cold-start surges in 12 V/24 V automotive systems without degradation |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification in industrial and transportation applications |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12 V to 48 V bidirectional DC-DC converter in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Primary synchronous rectifier in secondary-side synchronous rectification stage. Use Value: 300 V VRRM and AEC-Q101 qualification ensure safe operation during load dump transients and meet automotive reliability standards. | Use Scenario: 48 V output stage of telecom rectifier supplying base station power shelves. IC Role / Device Role / Timing Role: Output freewheeling diode in phase-shifted full-bridge topology. Use Value: 35 ns trr minimizes switching loss and improves efficiency above 100 kHz switching frequency. |
| Server PSU Secondary Rectification | Renewable Energy Inverter Auxiliary Supplies |
Use Scenario: +12 V standby rail generation in redundant server power supplies. IC Role / Device Role / Timing Role: Freewheeling path in active-clamp forward converter. Use Value: 20 A IF and 3°C/W RθJC support compact heatsink design under continuous light-load operation. | Use Scenario: Auxiliary 24 V supply for gate drivers and sensors in solar string inverters. IC Role / Device Role / Timing Role: Output rectifier in flyback converter powered from PV panel auxiliary winding. Use Value: Glass passivation and -55°C to +150°C TJ rating ensure field reliability across desert and arctic ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2003D | 300 V VRRM, 1.25 V VF @ 20 A, 50 ns trr, TO-220AC package, no AEC-Q101 | Higher trr increases switching loss in >150 kHz designs; lacks automotive qualification | Preferred where cost sensitivity outweighs AEC-Q101 need and lower trr is not required |
| VS-20EWH03-M3 | 300 V VRRM, 1.28 V VF @ 20 A, 30 ns trr, TO-247AC package, AEC-Q101 qualified | Larger TO-247AC footprint requires PCB layout change; superior trr benefits ultra-high-frequency designs | Selected when higher surge margin or tighter trr tolerance is needed and board space allows TO-247AC |
Compared with STTH2003D and VS-20EWH03-M3, the SFAF2005GH uniquely balances AEC-Q101 compliance, 35 ns trr, and ITO-220AC isolation in a cost-effective automotive-qualified package-making it optimal for space-constrained, thermally demanding 300 V rectification where dielectric isolation is mandatory.
Availability
SFAF2005GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switch-mode power supplies, and renewable energy auxiliary supplies requiring stable component supply and AEC-Q101 assurance.
Supply support for SFAF2005GH 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 automotive, industrial, and computing markets since 1979.
The SFAF2005GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-efficiency, high-reliability secondary-side rectification in automotive and industrial power conversion systems.
FAQ
What is the peak repetitive reverse voltage rating for SFAF2005GH?
The SFAF2005GH has a repetitive peak reverse voltage (VRRM) rating of 300 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2105), and defines the maximum reverse-biased voltage the device can block continuously without breakdown. It is critical for selecting appropriate input/output voltage margins in DC-DC and inverter designs.
Is SFAF2005GH qualified to AEC-Q101 standards?
Yes, the "H" suffix in SFAF2005GH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering information. The device undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) to meet automotive reliability requirements. This makes SFAF2005GH suitable for under-hood and powertrain applications.
What is the forward voltage drop of SFAF2005GH at rated current?
The SFAF2005GH exhibits a typical forward voltage (VF) of 1.300 V at 20 A and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and directly impacts conduction loss and thermal design. At elevated temperatures (e.g., 125°C), VF decreases slightly due to negative temperature coefficient of silicon.
Does SFAF2005GH have an electrically isolated tab?
Yes, the SFAF2005GH uses the ITO-220AC package, where "I" stands for insulated. Its metal tab is electrically isolated from the internal die by a dielectric barrier, enabling direct mounting to a grounded heatsink without additional insulation hardware. This is verified in the Mechanical Data section and Package Outline Dimensions drawing of the datasheet.
What is the reverse recovery time specification for SFAF2005GH?
The SFAF2005GH has a maximum reverse recovery time (trr) of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is critical for minimizing switching losses and EMI in high-frequency power converters. The value is consistent across the SFAF2005G–SFAF2008G group and confirmed in the Electrical Specifications table.
SFAF2005GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 300 V
- Capacitance @ Vr, F:
- 150pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF2005GH FAQ
1.How can I place an order for SFAF2005GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2005GH 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 SFAF2005GH reliable?
The price and inventory of SFAF2005GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2005GH is usually 5 days.
3.What payment methods are accepted for SFAF2005GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2005GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2005GH?
SFAF2005GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2005GH 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 SFAF2005GH?
For technical support, including SFAF2005GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2005GH requirements.
6.How does Aetrix verify that SFAF2005GH is sourced from the original manufacturer or authorized distributors?
All SFAF2005GH 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 SFAF2005GH meets industry standards.
7.What is the process for return or replacement of SFAF2005GH?
All SFAF2005GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2005GH, 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 SFAF2005GH part is unused and in its original packaging.
Return procedure for SFAF2005GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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