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Taiwan Semiconductor Corporation SFAF507G
- Part No.:
- SFAF507G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF507G.pdf
- Description:
- 35NS, 5A, 500V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:6,101
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Product details
Overview
SFAF507G from Taiwan Semiconductor is a 500 V, 5 A super fast rectifier diode in ITO-220AC package, featuring 35 ns reverse recovery time, 1.700 V forward voltage at 5 A and 25°C, and AEC-Q101 qualification option (SFAF507GH). It serves as a freewheeling or output rectifier in high-frequency switching power supplies.
For engineers reviewing the SFAF507G datasheet, SFAF507G pinout, SFAF507G application, or SFAF507G equivalent, key selection criteria include repetitive peak reverse voltage (500 V), forward voltage consistency at rated current, thermal resistance (5°C/W), surge capability (125 A), and automotive-grade reliability validation.
Technical Context
This single-die super fast rectifier uses glass-passivated junction technology to achieve low forward voltage and high reliability under repetitive surge stress. Its 35 ns trr and 70 pF junction capacitance support operation in DC–DC converters up to several hundred kHz.
The device operates across –55°C to +150°C junction temperature range with 5°C/W junction-to-case thermal resistance, enabling direct heatsink mounting without isolation washers in industrial and automotive power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 500 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in flyback or boost topologies |
| IF | 5 A - Continuous average forward current; sets minimum heatsink requirement at ambient ≤75°C |
| IFSM | 125 A - Non-repetitive surge rating (8.3 ms half-sine); supports inrush and fault-current handling |
| VF | 1.700 V @ 5 A, 25°C - Forward conduction loss directly impacts efficiency and thermal design in high-duty-cycle applications |
| trr | 35 ns - Reverse recovery time; limits switching frequency ceiling and reduces switching losses in hard-switched SMPS |
| RθJC | 5°C/W - Junction-to-case thermal resistance; enables direct thermal interface to heatsink for compact power stage layout |
| Junction Temp | –55°C to +150°C - Wide operating range supports under-hood automotive and industrial ambient conditions |
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 maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to lower-potential side of switching node (e.g., MOSFET source or transformer secondary center-tap) |
| Cathode | Forward current exit node | Connected to output rail or filter capacitor; electrically isolated from metal tab |
| Tab (Case) | Thermal path / mechanical anchor | Electrically isolated; used solely for heatsinking - no circuit reference required |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VF and leakage performance over lifetime, critical for long-term reliability in unattended systems |
| AEC-Q101 qualified version available | SFAF507GH meets automotive stress test requirements for temperature cycling, HTRB, and ESD - validated for under-hood use |
| UL Recognized (E-326243) | Confirms flammability (UL 94V-0) and electrical safety compliance for end-equipment certification |
| Halogen-free construction | Complies with IEC 61249-2-21; eliminates brominated flame retardants for RoHS-compliant manufacturing and recycling |
| 1.70 g mass | Supports automated pick-and-place with standard feeders; consistent weight aids vibration-resistant mounting |
Applications
| DC–DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Output rectifier handling continuous 5 A load with minimal conduction loss and fast turn-off to reduce cross-conduction risk. Use Value: 1.700 V VF at 5 A and 35 ns trr enable >92% efficiency at 200 kHz switching while maintaining thermal margin below 105°C case temp. | Use Scenario: Freewheeling path in three-phase motor drive inverters for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Clamp inductive kickback during IGBT turn-off; absorbs reactive energy without oscillation or voltage overshoot. Use Value: 500 V VRRM withstands bus transients up to 450 V DC link; 125 A IFSM handles motor stall surges without failure. |
| Automotive Onboard Charger | Industrial AC–DC Power Supply |
Use Scenario: PFC boost diode and LLC resonant rectifier in bidirectional OBC modules for EVs. IC Role / Device Role / Timing Role: High-reliability rectifier in high-temperature zones near magnetics and gate drivers. Use Value: AEC-Q101-qualified SFAF507GH ensures operation at 150°C junction temperature with <10 µA IR at 125°C - critical for functional safety compliance. | Use Scenario: Primary-side snubber and secondary-side output rectifier in 1 kW industrial SMPS with forced-air cooling. IC Role / Device Role / Timing Role: Fast-recovery diode minimizing switching losses in quasi-resonant flyback and forward converters. Use Value: 5°C/W RθJC allows direct heatsink mounting; 70 pF CJ reduces capacitive coupling noise in EMI-sensitive environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06D | 600 V VRRM, 1.85 V VF @ 5 A, 50 ns trr, TO-220AC package | Higher voltage rating but slower recovery and higher VF - less efficient at high frequency | Prefer when system requires >500 V margin and operates ≤100 kHz |
| VS-5EYH05-M3 | 500 V VRRM, 1.65 V VF @ 5 A, 30 ns trr, TO-220AC, AEC-Q101 qualified | Lower VF and faster trr, but 6.5°C/W thermal resistance - requires larger heatsink area | Prefer when efficiency >0.5% gain justifies added thermal design cost |
Compared with STTH5L06D and VS-5EYH05-M3, the SFAF507G delivers optimal balance of 500 V rating, 1.700 V VF, 35 ns trr, and 5°C/W thermal resistance - making it ideal for space-constrained 200–300 kHz industrial and automotive power stages where thermal management and switching loss trade-offs are tightly coupled.
Availability
SFAF507G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and automotive onboard chargers requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SFAF507G 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, automotive, and consumer markets since 1979.
The SFAF501G–SFAF508G series was designed specifically for high-efficiency, high-reliability power conversion in automotive and industrial applications - emphasizing fast recovery, low VF, and robust surge tolerance in insulated packages.
FAQ
What is the maximum junction temperature rating for SFAF507G?
The SFAF507G has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This wide range supports operation in under-hood automotive environments and industrial enclosures without active cooling. The device's 5°C/W junction-to-case thermal resistance allows reliable thermal management when mounted to an appropriately sized heatsink per the ITO-220AC mechanical specifications.
Is SFAF507G pin-compatible with other devices in the SFAF501G–SFAF508G family?
Yes, all SFAF501G–SFAF508G devices share identical ITO-220AC packaging, pinout, and mechanical footprint. The SFAF507G uses the same Anode–Cathode–Isolated Tab configuration and mounting torque specification (0.56 N·m max) as SFAF501G through SFAF508G, enabling voltage-rating upgrades without PCB redesign.
What does the "G" suffix in SFAF507G signify?
The "G" suffix in SFAF507G indicates green (halogen-free) compound per IEC 61249-2-21 and RoHS compliance. It denotes environmentally compliant packaging material - distinct from the "H" suffix used for AEC-Q101 qualified versions (e.g., SFAF507GH). Both variants share identical electrical and thermal specifications.
How does the 35 ns reverse recovery time of SFAF507G impact EMI in high-frequency designs?
The 35 ns trr of SFAF507G minimizes reverse recovery current spikes and associated dI/dt-induced ringing, reducing high-frequency conducted and radiated EMI in 200–500 kHz SMPS. Combined with its 70 pF junction capacitance, this enables cleaner switching node waveforms and relaxed EMI filter requirements compared to standard fast recovery diodes with >70 ns trr.
Can SFAF507G be used in place of a Schottky diode in a 12 V output rectifier?
No - SFAF507G is a silicon PN junction super fast rectifier with 1.700 V forward voltage, not a low-VF Schottky. It is unsuitable for low-voltage, high-current outputs where Schottky VF (<0.5 V) is essential for efficiency. Use SFAF507G only in ≥48 V systems or where its 500 V rating, surge capability, and temperature stability outweigh VF penalty.
SFAF507G 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):
- 500 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 500 V
- Capacitance @ Vr, F:
- 70pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF507G FAQ
1.How can I place an order for SFAF507G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF507G 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 SFAF507G reliable?
The price and inventory of SFAF507G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF507G is usually 5 days.
3.What payment methods are accepted for SFAF507G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF507G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF507G?
SFAF507G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF507G 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 SFAF507G?
For technical support, including SFAF507G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF507G requirements.
6.How does Aetrix verify that SFAF507G is sourced from the original manufacturer or authorized distributors?
All SFAF507G 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 SFAF507G meets industry standards.
7.What is the process for return or replacement of SFAF507G?
All SFAF507G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF507G, 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 SFAF507G part is unused and in its original packaging.
Return procedure for SFAF507G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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