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Taiwan Semiconductor Corporation SFAF2006G
- Part No.:
- SFAF2006G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2006G.pdf
- Description:
- DIODE GEN PURP 400V 20A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
SFAF2006G from Taiwan Semiconductor is a 20A, 400V repetitive peak reverse voltage super fast rectifier diode in ITO-220AC package, featuring 1.300V forward voltage at 20A/25°C, 35ns reverse recovery time, and 150pF junction capacitance - deployed in DC-DC converters and switching inverters requiring high-efficiency freewheeling.
For engineers reviewing the SFAF2006G datasheet, SFAF2006G pinout, SFAF2006G application, or SFAF2006G equivalent, key selection criteria include VRRM = 400V, IFSM = 200A surge rating, TJ(max) = 150°C, RθJC = 3°C/W thermal resistance, and AEC-Q101 qualification availability (SFAF2006GH variant).
Technical Context
This super fast rectifier uses glass-passivated silicon die to achieve low VF and fast trr, enabling high-frequency switching operation with minimal conduction and switching losses. Its single-die configuration and ITO-220AC thermally optimized package support high-current freewheeling paths in compact power stages.
The device operates across -55°C to +150°C junction temperature range, with 10µA max reverse leakage at 25°C and 400µA at 125°C, and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost topologies |
| IF | 20 A - continuous forward current rating at case temperature ≤75°C; sets baseline conduction capacity |
| IFSM | 200 A - non-repetitive surge current (8.3ms half-sine); supports inrush and fault transient handling |
| VF @ 20A, 25°C | 1.300 V - forward voltage drop; directly determines conduction loss (P = IF × VF) |
| trr | 35 ns - reverse recovery time; enables efficient operation up to ~3 MHz switching frequencies |
| RθJC | 3 °C/W - junction-to-case thermal resistance; enables thermal design with heatsink interface |
| CJ @ 1MHz, 4V | 150 pF - junction capacitance; impacts high-frequency EMI and snubber sizing |
Pinout & Package
Package: ITO-220AC - insulated TO-220 variant with isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m max mounting torque. Polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to switching node or inductor output in freewheeling path |
| Cathode (Lead 2) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; carries full load current during conduction |
| Tab (Isolated) | Thermal interface only (electrically isolated) | Mounts to heatsink without electrical short; enables low-RθJC thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling stress per AEC-Q101 test conditions |
| UL Recognized (E-326243) | Validates safety compliance for end-equipment certification in industrial and automotive power supplies |
| Halogen-free (IEC 61249-2-21) | Meets RoHS and environmental compliance mandates for global electronics manufacturing |
| Low VF + fast trr synergy | Reduces combined conduction and switching losses vs. standard fast recovery diodes in 100–500 kHz SMPS |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, critical for automotive under-hood applications |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48V–12V buck-derived converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side switch off-time; handles 20A continuous output current. Use Value: 1.300V VF minimizes conduction loss; 35ns trr reduces switching loss and EMI generation at 300–500 kHz. | Use Scenario: Output stage anti-parallel diode in 3-phase motor drive inverters for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Bidirectional current path during PWM dead-time; clamps inductive kickback during switching transitions. Use Value: 200A IFSM withstands motor stall surges; 400V VRRM covers 300V DC bus with safety margin. |
| Freewheeling Diode | SMPS Output Rectifier |
Use Scenario: Inductor current recirculation path in synchronous buck controllers where external diode is preferred over integrated FET body diode. IC Role / Device Role / Timing Role: Unidirectional current valve activated when main switch turns off; sustains load current continuity. Use Value: Low RθJC (3°C/W) allows direct heatsink mounting; 150°C TJ(max) supports high ambient designs. | Use Scenario: Primary-side clamp or secondary-side rectification in 100–250W AC-DC adapters and LED drivers. IC Role / Device Role / Timing Role: High-speed unidirectional conduction element replacing slower FRD or Schottky alternatives above 200V. Use Value: 150pF CJ limits displacement current during dv/dt events; glass passivation ensures stable VF over lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2004TV1 | VRRM = 400V, VF = 1.35V @ 20A, trr = 30ns, TO-220AC package | Lower trr but higher VF; slightly tighter thermal spec (RθJC = 2.8°C/W) | Preferred where faster recovery dominates over conduction loss |
| IXYS MUR2040CT | Dual common-cathode configuration, VRRM = 400V per diode, VF = 1.25V @ 20A, TO-220AB package | Requires dual-diode layout; not single-die drop-in; better VF but higher package capacitance | Used when dual-channel topology or lower VF justifies board redesign |
Compared with STTH2004TV1 and IXYS MUR2040CT, the SFAF2006G offers balanced VF/trr trade-off in single-die ITO-220AC with certified halogen-free and AEC-Q101-ready variants, making it optimal for cost-sensitive, thermally constrained industrial SMPS where isolation and regulatory compliance are mandatory.
Availability
SFAF2006G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, automotive-grade reliability options (via SFAF2006GH), and RoHS-compliant packaging.
Supply support for SFAF2006G 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 SFAF2006G belongs to TSC's Super Fast Rectifier family, engineered for high-efficiency, high-reliability power conversion in space-constrained and thermally demanding environments - especially where AEC-Q101 qualification, low VF, and fast trr are jointly required.
FAQ
What is the maximum junction temperature rating for SFAF2006G?
The SFAF2006G has a maximum junction temperature (TJ) rating of +150°C, with operational range from -55°C to +150°C. This rating enables use in high-ambient environments such as enclosed industrial power supplies or under-hood automotive modules when paired with appropriate heatsinking and derating per the forward current derating curve.
Does SFAF2006G have AEC-Q101 qualification?
The base SFAF2006G is not AEC-Q101 qualified; however, the variant SFAF2006GH is explicitly qualified per AEC-Q101. Both share identical electrical and thermal specifications, differing only in qualification status and marking - SFAF2006GH includes "H" suffix and undergoes additional stress testing for automotive applications.
What is the reverse recovery time (trr) of SFAF2006G and how is it measured?
The SFAF2006G has a typical reverse recovery time (trr) of 35 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value reflects performance in high-frequency switching applications and is validated using standardized test circuits defined in the datasheet Figure 6.
Can SFAF2006G replace a standard fast recovery diode in an existing 400V design?
Yes - the SFAF2006G can directly replace standard fast recovery diodes rated for 400V VRRM and ≥20A IF, provided the ITO-220AC footprint and isolated tab mounting are compatible. Its lower VF (1.300V vs. typical 1.5–1.7V) and faster trr (35 ns vs. 50–100 ns) improve efficiency and reduce EMI, but thermal interface must accommodate its 3°C/W RθJC.
What does the "G" suffix in SFAF2006G signify?
The "G" suffix in SFAF2006G indicates halogen-free packaging per IEC 61249-2-21, confirmed by Taiwan Semiconductor's material declaration. It also denotes green compound molding and RoHS compliance - distinct from the "H" suffix used for AEC-Q101 qualification in the SFAF2006GH variant.
SFAF2006G 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):
- 400 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 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
SFAF2006G FAQ
1.How can I place an order for SFAF2006G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2006G 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 SFAF2006G reliable?
The price and inventory of SFAF2006G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2006G is usually 5 days.
3.What payment methods are accepted for SFAF2006G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2006G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2006G?
SFAF2006G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2006G 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 SFAF2006G?
For technical support, including SFAF2006G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2006G requirements.
6.How does Aetrix verify that SFAF2006G is sourced from the original manufacturer or authorized distributors?
All SFAF2006G 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 SFAF2006G meets industry standards.
7.What is the process for return or replacement of SFAF2006G?
All SFAF2006G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2006G, 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 SFAF2006G part is unused and in its original packaging.
Return procedure for SFAF2006G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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