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Taiwan Semiconductor Corporation SFAF2004G C0G
- Part No.:
- SFAF2004G C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2004G C0G.pdf
- Description:
- DIODE GEN PURP 200V 20A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,415
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Product details
Overview
SFAF2004G from Taiwan Semiconductor is a 20 A, 200 V repetitive peak reverse voltage (VRRM) super fast rectifier diode in ITO-220AC package, featuring 35 ns reverse recovery time (trr), 0.975 V forward voltage at 20 A/25°C, and 3 °C/W junction-to-case thermal resistance - deployed in DC-DC converters and switching-mode inverters.
For engineers reviewing the SFAF2004G datasheet, SFAF2004G pinout, SFAF2004G application, or SFAF2004G equivalent, key selection criteria include verified trr, VF at rated IF, thermal performance under continuous conduction mode, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This super fast rectifier uses a glass-passivated silicon junction to achieve low forward voltage and high surge current capability (IFSM = 200 A, 8.3 ms half-sine). Its 35 ns reverse recovery time enables efficient operation in high-frequency switching topologies up to several hundred kHz.
The ITO-220AC package provides direct metal tab thermal path with 3 °C/W RθJC, supporting forced-air or heatsink-mounted designs. Polarity is marked on device body, and terminals are matte tin-plated per J-STD-002 solderability standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum non-repetitive reverse blocking voltage before breakdown |
| IF | 20 A - average forward current rating at case temperature ≤ 100°C |
| trr | 35 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables <500 kHz switching |
| VF | 0.975 V - forward voltage drop at 20 A and 25°C junction temperature |
| RθJC | 3 °C/W - thermal resistance from junction to case; defines heatsink sizing baseline |
| CJ | 170 pF - junction capacitance at 1 MHz, 4.0 V reverse bias; impacts EMI in hard-switched circuits |
Pinout & Package
Package: ITO-220AC - single-die, through-hole, isolated tab package with matte tin-plated leads; 1.70 g mass; UL 94V-0 molding compound; polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node in freewheeling or output rectification paths |
| Cathode (Lead 2) | Forward current exit point | Connected to ground/common return or low-side switch node |
| Tab (Metal Case) | Electrically isolated thermal path | Not internally connected; used for mechanical mounting and heatsinking only |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VF and leakage performance across temperature and humidity stress |
| UL Recognized (E-326243) | Validates flammability, creepage, and construction compliance for end-equipment safety certification |
| AEC-Q101 qualified option (SFAF2004GH) | Confirms robustness for automotive under-hood applications including temperature cycling and HTRB |
| Halogen-free per IEC 61249-2-21 | Meets RoHS and environmental compliance requirements for global electronics manufacturing |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode-based rectification in isolated 48 V–12 V buck-derived converters. IC Role / Device Role / Timing Role: Power conversion device handling continuous 20 A DC output current with minimal conduction loss. Use Value: 0.975 V VF reduces power loss by ~19.5 W vs. 1.2 V diode at 20 A, improving system efficiency and thermal margin. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or transformer leakage inductance) in 3-phase inverters. IC Role / Device Role / Timing Role: Fast-recovery clamping element that commutates current during switching transitions. Use Value: 35 ns trr limits reverse recovery charge (Qrr) and associated switching loss, enabling stable operation at 200–400 kHz PWM frequencies. |
| Automotive On-Board Charger (OBC) PFC Stage | Industrial AC-DC Front-End Rectification |
Use Scenario: Boost diode in active PFC stages of 3.3 kW–6.6 kW EV on-board chargers operating at 65–100 kHz. IC Role / Device Role / Timing Role: High-reliability rectifier subjected to repeated surge currents and thermal cycling. Use Value: AEC-Q101-qualified variant (SFAF2004GH) supports automotive qualification; 200 A IFSM withstands line surge events without degradation. | Use Scenario: Input bridge or output rectifier in industrial 3-phase 400 V AC–48 V DC power supplies. IC Role / Device Role / Timing Role: Primary power-handling component managing full-load conduction and transient overcurrents. Use Value: ITO-220AC package with 3 °C/W RθJC allows direct heatsink mounting, simplifying thermal design for 20 A continuous operation in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2002CT | 20 A, 200 V dual common-cathode configuration; trr = 35 ns; VF = 0.95 V @ 20 A | Requires dual-diode layout; not single-die replacement | Select when dual-channel topology or TO-220AB footprint is preferred |
| IXYS MUR2020CT | 20 A, 200 V dual common-cathode; trr = 30 ns; VF = 0.92 V @ 20 A; higher IFSM = 250 A | Also dual configuration; different pinout and thermal pad geometry | Choose for tighter trr and lower VF where dual-diode use case applies |
Compared with STTH2002CT and IXYS MUR2020CT, the SFAF2004G offers single-die simplicity in ITO-220AC with identical VRRM/IF ratings and validated AEC-Q101 option - making it optimal for space-constrained, single-diode freewheeling or output rectification where thermal path isolation matters.
Availability
SFAF2004G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and automotive on-board charger PFC stages requiring stable component supply and long-term production continuity.
Supply support for SFAF2004G 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, computing, and automotive markets since 1979.
The SFAF2004G belongs to TSC's Super Fast Rectifier family, engineered for high-efficiency, high-reliability power conversion in switching-mode power supplies and motor drives where low VF, fast trr, and rugged surge capability are critical.
FAQ
What is the maximum junction temperature rating for the SFAF2004G?
The SFAF2004G has a maximum junction temperature (TJ) rating of +150°C, with operational storage temperature spanning –55°C to +150°C. This rating supports use in high-ambient environments such as automotive engine compartments or enclosed industrial power supplies when properly heatsinked. Thermal derating curves confirm usable current capacity down to 10 A at 125°C case temperature.
Is the SFAF2004G pin-compatible with standard TO-220AC packages?
Yes, the SFAF2004G uses the ITO-220AC package, which shares identical mechanical outline, lead spacing, and mounting hole dimensions with industry-standard TO-220AC. However, its metal tab is electrically isolated - unlike conductive-tab TO-220 variants - so circuit grounding must be implemented via separate lead connections, not the tab.
Does the SFAF2004G meet automotive qualification standards?
The base SFAF2004G is not AEC-Q101 qualified, but the SFAF2004GH variant is explicitly qualified per AEC-Q101 Rev D. That version undergoes stress testing including HTGB, HTRB, and temperature cycling, and carries the "H" suffix in its ordering code. For automotive applications, specify SFAF2004GH to ensure qualification compliance.
What is the reverse leakage current specification for the SFAF2004G at elevated temperature?
At 25°C junction temperature, the SFAF2004G exhibits a maximum reverse leakage current (IR) of 10 µA at rated VRRM. At 125°C, this increases to 400 µA - a value confirmed under pulse test conditions (PW = 30 ms). This behavior is typical for silicon super fast rectifiers and must be accounted for in high-impedance bias networks.
How does the junction capacitance of the SFAF2004G affect EMI in high-frequency designs?
The SFAF2004G has a typical junction capacitance (CJ) of 170 pF at 1 MHz and 4.0 V reverse bias. In hard-switched topologies above 200 kHz, this capacitance contributes directly to turn-on switching loss and high-frequency ringing. Layout practices - including minimized loop area and local snubbing - are recommended to suppress EMI generated by CJ-driven displacement current transients.
SFAF2004G C0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 975 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 170pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF2004G C0G FAQ
1.How can I place an order for SFAF2004G C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2004G C0G 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 SFAF2004G C0G reliable?
The price and inventory of SFAF2004G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2004G C0G is usually 5 days.
3.What payment methods are accepted for SFAF2004G C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2004G C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2004G C0G?
SFAF2004G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2004G C0G 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 SFAF2004G C0G?
For technical support, including SFAF2004G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2004G C0G requirements.
6.How does Aetrix verify that SFAF2004G C0G is sourced from the original manufacturer or authorized distributors?
All SFAF2004G C0G 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 SFAF2004G C0G meets industry standards.
7.What is the process for return or replacement of SFAF2004G C0G?
All SFAF2004G C0G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2004G C0G, 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 SFAF2004G C0G part is unused and in its original packaging.
Return procedure for SFAF2004G C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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