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Taiwan Semiconductor Corporation SFAF2001GH
- Part No.:
- SFAF2001GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2001GH.pdf
- Description:
- 35NS, 20A, 50V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:5,843
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Product details
Overview
SFAF2001GH from Taiwan Semiconductor is a 20A, 50V AEC-Q101-qualified super fast rectifier diode in ITO-220AC package, featuring 0.975V forward voltage at 20A/25°C, 35ns reverse recovery time, and 3°C/W junction-to-case thermal resistance for high-efficiency DC-DC converters.
For engineers reviewing the SFAF2001GH datasheet, SFAF2001GH pinout, SFAF2001GH application, or SFAF2001GH equivalent, key selection criteria include repetitive peak reverse voltage (50V), surge current rating (200A), junction temperature range (–55°C to +150°C), AEC-Q101 qualification status, and ITO-220AC mechanical compatibility with heatsink mounting.
Technical Context
This single-die, glass-passivated super fast rectifier delivers low conduction loss and rapid switching performance critical for high-frequency switching mode power supplies. Its 35ns trr and 170pF junction capacitance at 1MHz/4V support efficient operation in 50–500kHz converter topologies.
The device uses matte tin-plated leads compliant with J-STD-002, meets UL 94V-0 flammability rating, and passes JESD201 Class 2 whisker testing - confirming suitability for automotive-grade power conversion where reliability under thermal cycling and vibration is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 20A - supports continuous output current in 100–300W DC-DC stages without forced air cooling |
| VRRM | 50V - rated for low-voltage secondary-side rectification in buck-derived or LLC resonant converters |
| IFSM (8.3ms) | 200A - withstands inrush and transient overloads during startup or fault conditions |
| VF @ 20A, 25°C | 0.975V - reduces conduction loss to ~19.5W per device at full load, improving system efficiency |
| trr | 35ns - minimizes switching loss and EMI generation in high-frequency synchronous rectifier replacement designs |
| RθJC | 3°C/W - enables direct heatsink mounting with ≤60°C temperature rise at 20A under typical thermal interface conditions |
| IR @ 50V, 125°C | 400µA - ensures low leakage in high-temperature environments such as under-hood automotive modules |
Pinout & Package
Package: ITO-220AC - insulated TO-220 variant with electrically isolated tab, 1.70g mass, 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 switching node or transformer secondary; requires PCB trace width ≥1.5mm for 20A RMS |
| Cathode (Lead 2) | Output current exit point | Connected to output capacitor or common rail; polarity marked on device body |
| Tab (Case) | Electrically isolated thermal path | Mounts directly to heatsink; no electrical connection required; isolation voltage ≥2500V RMS |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements including HTOL, TC, and UHAST |
| Glass passivated junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid or condensing environments |
| Low VF (0.975V) | Reduces power dissipation by >15% vs. standard fast rectifiers at 20A, lowering thermal design margin requirements |
| High IFSM (200A) | Eliminates need for external surge limiting in 12V/24V input systems with capacitive loads or short-circuit transients |
| UL Recognized (E-326243) | Meets end-equipment safety certification requirements for industrial and automotive power supplies without additional isolation components |
Applications
| DC-DC Converter Secondary Rectification | Automotive On-Board Charger (OBC) Output Stage |
|---|---|
Use Scenario: High-efficiency 12V–48V isolated DC-DC module delivering up to 20A output in telecom or server PSUs. IC Role / Device Role / Timing Role: Primary unidirectional power transfer element replacing Schottky diodes in synchronous rectifier-assisted topologies. Use Value: 0.975V VF and 35ns trr reduce total losses by ~2.1W vs. legacy fast rectifiers, enabling higher power density without derating. | Use Scenario: 3.3kW bidirectional OBC using dual-phase interleaved LLC with discrete secondary-side rectification. IC Role / Device Role / Timing Role: Freewheeling and rectification switch in secondary synchronous rectifier auxiliary supply rails. Use Value: AEC-Q101 qualification and –55°C to +150°C TJ range ensure compliance with ISO 16750-4 and functional safety requirements for EV charging systems. |
| Industrial Motor Drive Brake Circuit | Renewable Energy Inverter Auxiliary Supply |
Use Scenario: Regenerative braking energy dissipation path in 3-phase 7.5kW VFDs using dynamic brake chopper topology. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode clamping inductive kickback from IGBT gate drivers and snubbers. Use Value: 200A IFSM rating handles repeated 150A surge events during emergency stop sequences without degradation. | Use Scenario: Auxiliary 24V/1A isolated supply in solar string inverters, powered from main DC bus via flyback converter. IC Role / Device Role / Timing Role: Output rectifier in high-frequency flyback transformer secondary winding. Use Value: 170pF CJ and 35ns trr suppress ringing and EMI at 100–250kHz switching frequencies, easing EMC filter design. |
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 | 20A, 200V, TO-220AC package, VF = 1.05V @ 20A, trr = 30ns, non-AEC-Q101 | Higher VRRM allows use in 100–200V systems but lacks automotive qualification | Select when higher reverse voltage margin is needed and AEC-Q101 is not required |
| ON Semi MUR2020CT | 20A, 200V, TO-220AC, VF = 1.1V @ 20A, trr = 35ns, RoHS-compliant, non-AEC-Q101 | Same trr but higher VF increases conduction loss; no automotive qualification or UL recognition | Choose for cost-sensitive industrial supplies where AEC-Q101 and UL are not mandated |
Compared with STTH2002CT and MUR2020CT, SFAF2001GH offers lower forward voltage and formal AEC-Q101/UL recognition - making it uniquely suitable for automotive 12V/48V DC-DC modules requiring both efficiency and safety certification, while the alternatives serve broader industrial voltage ranges without qualification overhead.
Availability
SFAF2001GH is available at Aetrix Electronics and suitable for automotive power conversion, industrial motor drives, and renewable energy inverters requiring stable component supply with long-term lifecycle assurance.
Supply support for SFAF2001GH 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 global automotive, industrial, and computing markets since 1979.
The SFAF2001GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-reliability, high-frequency power conversion in automotive electrification and industrial automation systems.
FAQ
What is the maximum junction temperature rating for SFAF2001GH?
The SFAF2001GH has a maximum junction temperature (TJ MAX) of +150°C, with operational range from –55°C to +150°C. This rating supports use in under-hood automotive environments and enclosed industrial enclosures where ambient temperatures exceed 85°C. Derating curves in the official datasheet define safe operating current versus case temperature for SFAF2001GH.
Is SFAF2001GH pin-compatible with standard TO-220AC rectifiers?
Yes, SFAF2001GH uses the ITO-220AC package - a mechanically identical footprint to TO-220AC with electrically isolated tab. Mounting hole spacing, lead pitch, and outline dimensions match industry-standard TO-220AC, allowing drop-in replacement in existing layouts without PCB changes. The SFAF2001GH tab is isolated, unlike conductive-tab TO-220 variants.
Does SFAF2001GH meet automotive qualification standards?
Yes, SFAF2001GH is explicitly AEC-Q101 qualified per the manufacturer's documentation and marking code "H". It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) - confirming suitability for automotive powertrain and chassis applications.
What is the reverse recovery time (trr) specification for SFAF2001GH?
The SFAF2001GH has a maximum reverse recovery time (trr) of 35ns, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This value is confirmed in the Electrical Specifications table of the official datasheet and enables efficient operation in switching power supplies operating above 100kHz, reducing switching losses and EMI generation in the SFAF2001GH.
How does the forward voltage of SFAF2001GH compare to other 20A rectifiers?
SFAF2001GH specifies a typical forward voltage of 0.975V at 20A and 25°C - lower than many competing 20A fast rectifiers (e.g., 1.05–1.2V). This 50–225mV advantage reduces conduction loss by 1–2.5W at full load, directly improving thermal management and overall system efficiency for SFAF2001GH in high-current applications.
SFAF2001GH 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):
- 50 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 @ 50 V
- Capacitance @ Vr, F:
- 170pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF2001GH FAQ
1.How can I place an order for SFAF2001GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2001GH 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 SFAF2001GH reliable?
The price and inventory of SFAF2001GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2001GH is usually 5 days.
3.What payment methods are accepted for SFAF2001GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2001GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2001GH?
SFAF2001GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2001GH 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 SFAF2001GH?
For technical support, including SFAF2001GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2001GH requirements.
6.How does Aetrix verify that SFAF2001GH is sourced from the original manufacturer or authorized distributors?
All SFAF2001GH 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 SFAF2001GH meets industry standards.
7.What is the process for return or replacement of SFAF2001GH?
All SFAF2001GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2001GH, 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 SFAF2001GH part is unused and in its original packaging.
Return procedure for SFAF2001GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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