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Taiwan Semiconductor Corporation SFAF2008G
- Part No.:
- SFAF2008G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2008G.pdf
- Description:
- DIODE GEN PURP 600V 20A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:895
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Product details
Overview
SFAF2008G from Taiwan Semiconductor is a 20A, 600V super fast rectifier diode in ITO-220AC package, featuring 1.700V forward voltage at 20A and 25°C, 35ns reverse recovery time, and 150°C maximum junction temperature-designed for high-efficiency DC/DC converters and switching inverters.
For engineers reviewing the SFAF2008G datasheet, SFAF2008G pinout, SFAF2008G application, or SFAF2008G equivalent, key selection considerations include its 600V VRRM, 200A surge capability, glass-passivated junction, UL recognition (E-326243), and AEC-Q101 qualification option (SFAF2008GH).
Technical Context
This single-die super fast rectifier uses planar epitaxial construction with glass passivation to achieve low reverse recovery charge and stable switching performance under high-frequency hard-switching conditions. Its 35ns trr and 150pF junction capacitance support operation in 100–500 kHz SMPS topologies.
The device operates across –55°C to +150°C junction range with 3°C/W junction-to-case thermal resistance, enabling direct heatsink mounting without isolation washers in industrial and automotive-grade power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating ceiling in boost/flyback output stages |
| IF | 20 A - Continuous forward current rating at case temperature ≤85°C; supports 200W+ converter designs |
| IFSM | 200 A - Non-repetitive surge current (8.3ms half-sine); withstands startup inrush and fault transients |
| VF | 1.700 V @ 20A, 25°C - Low conduction loss enables >94% efficiency in 48V-output telecom PSUs |
| trr | 35 ns - Fast reverse recovery minimizes switching losses and EMI in high-frequency converters |
| RθJC | 3 °C/W - Enables thermal design with ≤60°C temperature rise at full load using standard ITO-220 heatsinks |
| Junction Cap. | 150 pF @ 1MHz, 4V - Low capacitance reduces capacitive coupling noise in isolated gate-drive circuits |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with electrically isolated tab (no internal metal connection between cathode and case), matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m max mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to switching node (e.g., MOSFET drain) in freewheeling or synchronous rectification paths |
| Cathode | Output terminal for forward conduction path | Connected to output rail or energy storage inductor; carries full load current during conduction phase |
| Case / Tab | Electrically isolated thermal interface | Mounts directly to heatsink without insulator; provides low-impedance thermal path while maintaining 2500V AC isolation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in harsh environments |
| AEC-Q101 qualified version available | SFAF2008GH meets automotive stress test requirements for under-hood power conversion modules |
| UL Recognized (E-326243) | Validates safety compliance for end-equipment certification in industrial and medical auxiliary supplies |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and WEEE compliance |
| 150°C max junction temperature | Supports operation in sealed enclosures or high-ambient environments without derating below 20A up to 85°C case temp |
Applications
| DC/DC Converters | Switching Inverters |
|---|---|
Use Scenario: High-density 48V-to-12V isolated buck-boost converters in server power supplies. IC Role / Device Role / Timing Role: Output rectifier in active-clamp forward topology handling 20A continuous output current. Use Value: 35ns trr and 1.7V VF reduce switching and conduction losses, improving full-load efficiency by ≥0.8% vs. standard FRDs. | Use Scenario: Single-phase motor drive inverters for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Freewheeling diode across IGBTs in H-bridge output stage, clamping inductive kickback. Use Value: 200A IFSM safely absorbs 3× rated current surges during motor stall or rapid deceleration events. |
| Automotive DC/DC Modules | Industrial UPS Systems |
Use Scenario: 12V-to-48V bidirectional DC/DC in 48V mild-hybrid vehicle architectures. IC Role / Device Role / Timing Role: Primary rectifier in synchronous rectified LLC resonant converter operating at 200–300 kHz. Use Value: Glass-passivated junction and AEC-Q101 qualification (SFAF2008GH) ensure 15-year field reliability under automotive thermal cycling. | Use Scenario: Online double-conversion UPS systems requiring high-reliability output rectification. IC Role / Device Role / Timing Role: Main rectifier in high-current battery-charging stage with redundant parallel configuration. Use Value: 150°C TJMAX and 3°C/W RθJC allow sustained 20A operation in fanless, sealed UPS chassis with ambient up to 70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2006D | 600V VRRM, 20A IF, 35ns trr, but VF = 1.85V @ 20A - 8.8% higher conduction loss | Same ITO-220AC package; lacks AEC-Q101 option and UL recognition | Preferred where cost sensitivity outweighs 0.15V VF penalty and automotive qualification is not required |
| IXYS MUR2060CT | 600V VRRM, dual common-cathode configuration (2×10A), VF = 1.75V @ 10A per die - not single-die 20A | Requires PCB layout change; intended for interleaved or dual-rail outputs | Only suitable when dual-diode topology is already implemented and thermal sharing across two dies is acceptable |
Compared with STTH2006D and IXYS MUR2060CT, the SFAF2008G delivers lower forward voltage, UL recognition, and AEC-Q101 availability in a true single-die 20A configuration-making it optimal for space-constrained, high-reliability 600V rectification where thermal and safety certifications are mandatory.
Availability
SFAF2008G is available at Aetrix Electronics and suitable for DC/DC converters, switching inverters, and automotive DC/DC modules requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for SFAF2008G 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving industrial, automotive, and computing markets since 1979.
The SFAF2008G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-frequency, high-reliability power conversion where low VF, fast trr, and robust thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the SFAF2008G?
The SFAF2008G has a maximum junction temperature (TJMAX) of +150°C, verified per JEDEC JESD22-A108. This allows uninterrupted 20A operation at case temperatures up to 85°C with appropriate heatsinking. Derating begins above 85°C case temperature, following the forward current derating curve in the official datasheet (Version J2105, Page 3).
Is the SFAF2008G pin-compatible with other devices in the SFAF200xG series?
Yes-the SFAF2008G shares identical ITO-220AC package dimensions, pinout (anode/cathode/tab), and mechanical mounting features with all SFAF2001G–SFAF2007G variants. Voltage rating differences (50V–600V) do not affect physical compatibility, enabling drop-in replacement when VRRM margin permits.
Does the SFAF2008G have AEC-Q101 qualification?
The base SFAF2008G is not AEC-Q101 qualified; however, the AEC-Q101-compliant version is explicitly designated SFAF2008GH per the ordering code table. Only parts marked "H" suffix undergo full AEC-Q101 stress testing-including temperature cycling, HTRB, and ESD-making SFAF2008GH suitable for automotive power modules.
What is the reverse recovery time (trr) specification for the SFAF2008G?
The SFAF2008G has a maximum reverse recovery time (trr) of 35 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC Test Method JESD24-12. This value is confirmed across the full operating temperature range and supports stable operation in 200–500 kHz switching converters.
How does the SFAF2008G differ from standard fast recovery diodes in terms of forward voltage?
The SFAF2008G delivers 1.700 V typical forward voltage at 20 A and 25°C-significantly lower than standard fast recovery diodes (typically 2.1–2.4 V in same package). This 0.4–0.7 V reduction lowers conduction losses by 20–30%, directly improving system efficiency and reducing heatsink requirements in high-current applications.
SFAF2008G 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):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- 150pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF2008G FAQ
1.How can I place an order for SFAF2008G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2008G 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 SFAF2008G reliable?
The price and inventory of SFAF2008G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2008G is usually 5 days.
3.What payment methods are accepted for SFAF2008G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2008G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2008G?
SFAF2008G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2008G 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 SFAF2008G?
For technical support, including SFAF2008G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2008G requirements.
6.How does Aetrix verify that SFAF2008G is sourced from the original manufacturer or authorized distributors?
All SFAF2008G 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 SFAF2008G meets industry standards.
7.What is the process for return or replacement of SFAF2008G?
All SFAF2008G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2008G, 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 SFAF2008G part is unused and in its original packaging.
Return procedure for SFAF2008G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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