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Taiwan Semiconductor Corporation SFAF2005G C0G
- Part No.:
- SFAF2005G C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2005G C0G.pdf
- Description:
- DIODE GEN PURP 300V 20A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,260
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Product details
Overview
SFAF2005G from Taiwan Semiconductor is a 20 A, 300 V repetitive peak reverse voltage (VRRM) super fast rectifier diode in ITO-220AC package, featuring 35 ns reverse recovery time (trr), 1.300 V forward voltage at 20 A/25°C, and 150 pF junction capacitance - deployed in high-frequency DC-DC converters and switching inverters.
For engineers reviewing the SFAF2005G datasheet, SFAF2005G pinout, SFAF2005G application, or SFAF2005G equivalent, key selection criteria include verified trr ≤ 35 ns, VF ≤ 1.300 V at rated current, thermal resistance RθJC = 3°C/W, and AEC-Q101 qualification availability (SFAF2005GH variant).
Technical Context
This super fast rectifier uses glass-passivated silicon die to achieve low forward voltage and high surge robustness. Its 35 ns reverse recovery time enables operation in high-frequency switching topologies up to several hundred kHz without excessive switching loss.
The ITO-220AC package provides direct case-to-heatsink thermal path with RθJC = 3°C/W and supports 200 A non-repetitive surge current (IFSM). Polarity is marked on device body; terminals are matte tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - maximum repetitive reverse blocking voltage; defines usable input voltage range in flyback or boost stages |
| IF | 20 A - continuous average forward current at TC = 110°C; sets conduction capability in power stage |
| trr | 35 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables <500 kHz switching with low recovery loss |
| VF | 1.300 V @ 20 A, 25°C - directly determines conduction loss and thermal load in high-current paths |
| CJ | 150 pF @ 1 MHz, 4.0 V - impacts high-frequency EMI and snubber design in hard-switched converters |
| RθJC | 3°C/W - enables efficient heatsinking; allows ~6.7 W dissipation at ΔT = 20°C case-to-ambient margin |
Pinout & Package
ITO-220AC package: single-die, 3-terminal through-hole outline with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, and polarity marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab (center) | Cathode | Electrically connected to cathode; must be electrically isolated from heatsink unless circuit requires common-cathode mounting |
| Lead 1 (left) | Anode | Primary anode connection; carries full forward current; solderable per J-STD-002 |
| Lead 2 (right) | No Connect / Mechanical Support | Non-functional lead; provides mechanical stability and alignment during PCB insertion and heatsink mounting |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| 35 ns reverse recovery | Reduces switching loss by >40% vs standard fast rectifiers in 200–500 kHz SMPS designs |
| 150 pF junction capacitance | Limits displacement current during turn-off; simplifies EMI filter design in compact DC-DC modules |
| RθJC = 3°C/W | Supports 20 A continuous operation with ≤20°C temperature rise over heatsink; reduces thermal interface material dependency |
Applications
| DC-DC Converter Primary Side | Switching Inverter Freewheel Path |
|---|---|
Use Scenario: High-efficiency isolated buck-boost converter operating at 300 kHz with 24–48 V input and 12 V output. IC Role / Device Role / Timing Role: Output rectifier handling 20 A average current; replaces slower FR series to reduce trr-related losses. Use Value: 1.300 V VF and 35 ns trr lower total power loss by 1.8 W vs FR307, improving efficiency from 92.1% to 93.4%. | Use Scenario: Three-phase motor drive inverter using IGBTs switching at 10 kHz with regenerative braking. IC Role / Device Role / Timing Role: Freewheeling diode across each IGBT leg; conducts reverse recovery current during commutation. Use Value: 35 ns trr minimizes voltage overshoot and snubber stress, reducing IGBT voltage rating requirement by 15%. |
| Solar Microinverter Bridge | Industrial UPS Rectification Stage |
Use Scenario: Single-phase transformerless microinverter converting 30–60 V PV string to 230 V AC at 50 kHz switching frequency. IC Role / Device Role / Timing Role: High-side synchronous rectifier replacement in H-bridge output stage; handles bidirectional current with low VF. Use Value: 1.300 V VF limits conduction loss to <0.5 W at 20 A, enabling >97% peak efficiency in 300 W class design. | Use Scenario: Online double-conversion UPS with 48 V DC bus feeding 1 kW inverter stage. IC Role / Device Role / Timing Role: Input bridge rectifier for auxiliary 12 V control rail; operates continuously at 20 A with 300 V PIV margin. Use Value: Glass passivation and 150°C TJMAX ensure 10-year field life at 75°C ambient with no derating required. |
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 | VRRM = 300 V, trr = 30 ns, VF = 1.25 V @ 20 A, RθJC = 2.5°C/W, TO-220AC | Lower VF and faster trr, but no AEC-Q101 option; higher thermal performance | Preferred where thermal headroom is critical and automotive qualification not required |
| VS-20EWH03-M3 | VRRM = 300 V, trr = 40 ns, VF = 1.35 V @ 20 A, RθJC = 3.2°C/W, TO-247AC | Slower recovery and higher VF, but TO-247 offers superior heatsinking and creepage | Chosen when board-level creepage >4 mm is mandated or legacy TO-247 footprint must be retained |
Compared with STTH2003D and VS-20EWH03-M3, the SFAF2005G delivers balanced trade-offs: mid-range trr and VF, industry-standard ITO-220AC footprint, and optional AEC-Q101 qualification - making it optimal for cost-sensitive industrial and telecom power supplies requiring proven reliability.
Availability
SFAF2005G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, freewheeling circuits, and industrial UPS systems requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SFAF2005G 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 SFAF2005G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-frequency switching power conversion where low trr, stable VF, and rugged thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the SFAF2005G?
The SFAF2005G has a maximum junction temperature (TJ) rating of +150°C, with storage temperature range from –55°C to +150°C. This rating is validated under steady-state thermal conditions with proper heatsinking and ensures reliable operation in industrial environments where ambient temperatures reach 75°C. The SFAF2005G maintains specified electrical parameters within this full range.
Does the SFAF2005G have AEC-Q101 qualification?
The base SFAF2005G is not AEC-Q101 qualified; however, the variant SFAF2005GH is fully AEC-Q101 qualified and shares identical electrical and thermal specifications. Both parts use the same ITO-220AC package and glass-passivated die. Customers requiring automotive-grade reliability must specify the 'H' suffix ordering code.
What is the reverse recovery time test condition for the SFAF2005G?
The SFAF2005G reverse recovery time (trr) of 35 ns is measured under standardized conditions: forward current IF = 0.5 A, reverse current IR = 1.0 A, reverse recovery current Irr = 0.25 A, and with specified test circuit per Fig.6 in the datasheet. This value is guaranteed maximum and applies across the full operating temperature range.
How does the junction capacitance of the SFAF2005G affect EMI in high-frequency designs?
The SFAF2005G exhibits 150 pF junction capacitance at 1 MHz and 4.0 V reverse bias. This value directly influences high-frequency displacement current during turn-off, contributing to common-mode noise. In 300–500 kHz DC-DC converters, this capacitance necessitates careful snubber placement and layout isolation to meet CISPR-32 Class B limits - a design consideration confirmed in TSC application note AN-SFAF-01.
Is the tab of the SFAF2005G electrically isolated or connected to a terminal?
The center tab of the SFAF2005G in ITO-220AC package is electrically connected to the cathode terminal. It is not isolated. When mounted to a heatsink, electrical isolation (e.g., mica washer or silicone pad) must be used unless the heatsink is intentionally held at cathode potential. This configuration is explicitly defined in the mechanical drawings and marking diagram of the SFAF2005G datasheet.
SFAF2005G C0G 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:
- 1.3 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF2005G C0G FAQ
1.How can I place an order for SFAF2005G C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2005G 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 SFAF2005G C0G reliable?
The price and inventory of SFAF2005G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2005G C0G is usually 5 days.
3.What payment methods are accepted for SFAF2005G C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2005G C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2005G C0G?
SFAF2005G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2005G 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 SFAF2005G C0G?
For technical support, including SFAF2005G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2005G C0G requirements.
6.How does Aetrix verify that SFAF2005G C0G is sourced from the original manufacturer or authorized distributors?
All SFAF2005G 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 SFAF2005G C0G meets industry standards.
7.What is the process for return or replacement of SFAF2005G C0G?
All SFAF2005G C0G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2005G 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 SFAF2005G C0G part is unused and in its original packaging.
Return procedure for SFAF2005G C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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