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Taiwan Semiconductor Corporation SFAF504G
- Part No.:
- SFAF504G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF504G.pdf
- Description:
- DIODE GEN PURP 200V 5A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
SFAF504G from Taiwan Semiconductor is a 5A, 200V repetitive peak reverse voltage super fast rectifier diode in ITO-220AC package, featuring 35ns reverse recovery time, 0.975V forward voltage at 5A/25°C, and 5°C/W junction-to-case thermal resistance-designed for freewheeling and DC-DC converter output stages.
For engineers reviewing the SFAF504G datasheet, SFAF504G pinout, SFAF504G application, or SFAF504G equivalent, key selection criteria include VRRM=200V, trr=35ns, VF≤0.975V at rated current, TJ max=150°C, and ITO-220AC mounting compatibility with standard heatsink interfaces.
Technical Context
This super fast rectifier employs a glass-passivated single-die silicon junction optimized for high-efficiency switching power supplies. Its 35ns reverse recovery time and low 0.975V forward drop at 5A reduce conduction and switching losses in high-frequency topologies.
The device operates across -55°C to +150°C junction temperature range, supports 125A non-repetitive surge current (8.3ms half-sine), and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage headroom in flyback or buck converters |
| IF | 5 A - Continuous average forward current; sets minimum heatsink sizing under steady-state conduction |
| trr | 35 ns - Reverse recovery time; enables operation up to ~3 MHz switching frequency before significant switching loss dominates |
| VF @ 5A, 25°C | 0.975 V - Forward voltage drop; determines conduction loss of 4.875 W at full load, critical for thermal design |
| RθJC | 5 °C/W - Junction-to-case thermal resistance; allows direct calculation of case temperature rise above heatsink base |
| IFSM | 125 A - Non-repetitive surge rating; withstands inrush or fault currents without bondwire fusing |
| TJ max | 150 °C - Maximum junction temperature; sets upper limit for thermal margin in sealed or high-ambient environments |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with electrically isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to switching node or transformer secondary; must handle full 5A RMS and 125A surge |
| Cathode (Lead 2) | Forward current exit point | Typically tied to output capacitor ground or common return; carries same current as anode |
| Tab (Case) | Electrically isolated thermal path | Provides mechanical mounting and heat transfer to heatsink; no electrical connection required per isolation rating |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term performance under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| UL Recognized (E-326243) | Validates safety compliance for end-equipment certification without additional system-level testing overhead |
| AEC-Q101 qualified option (SFAF504GH) | Supports automotive powertrain and body electronics where component-level stress qualification is mandatory |
| Halogen-free (IEC 61249-2-21) | Meets RoHS and ELV directives; eliminates corrosive halogen gas generation during PCB rework or fire events |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, ensuring long-term reliability in high-vibration applications |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode rectification in isolated 48V–12V buck-derived DC-DC modules for telecom and server PSUs. IC Role / Device Role / Timing Role: Unidirectional current steering device converting transformer AC output to regulated DC; handles 5A continuous with minimal VF-related loss. Use Value: 0.975V VF at 5A reduces conduction loss by ~15% vs. standard fast rectifiers, improving efficiency in 50–300 kHz designs. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or solenoids) in H-bridge inverters for HVAC actuators. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during switch-off transitions; recovers in 35ns to minimize voltage overshoot. Use Value: 35ns trr limits voltage spike amplitude and EMI generation during 20–100 kHz PWM commutation, reducing snubber burden. |
| Industrial Power Supply Input Stage | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Input rectification in universal-input (85–265VAC) offline SMPS for PLC I/O modules and sensor transmitters. IC Role / Device Role / Timing Role: Bridge leg diode handling 5A average current with 125A surge tolerance during cold-start inrush. Use Value: 200V VRRM provides 1.5× margin over 141V peak of 100VAC line, enabling robust operation across global mains voltages. | Use Scenario: 12V rail protection and reverse-polarity safeguard in BCM power distribution units. IC Role / Device Role / Timing Role: Reverse-blocking element preventing battery backfeed during ignition transients; rated for -55°C to +150°C ambient. Use Value: AEC-Q101-qualified version (SFAF504GH) ensures compliance with automotive qualification protocols without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06 | VRRM=600V, VF=1.15V @ 5A, trr=35ns, TO-220AC package | Higher voltage rating but higher VF increases conduction loss in 200V-class designs | Select when system requires >200V blocking margin or shares BOM with higher-voltage variants |
| VS-5EYH02-M3 | VRRM=200V, VF=0.92V @ 5A, trr=25ns, TO-220AC package | Faster recovery and lower VF, but not AEC-Q101 qualified and lacks UL recognition | Prefer for cost-sensitive industrial SMPS where automotive qualification and safety listing are unnecessary |
Compared with STTH5L06 and VS-5EYH02-M3, the SFAF504G balances 200V rating, 0.975V VF, 35ns trr, UL recognition, and AEC-Q101 availability-making it optimal for automotive-adjacent industrial power supplies requiring certified reliability without over-specifying voltage.
Availability
SFAF504G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for SFAF504G 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, specializing in power devices, rectifiers, and protection components.
The SFAF504G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-reliability switching power conversion in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for SFAF504G?
The SFAF504G has a VRRM rating of 200 V, as confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor datasheet (Version I2105). This value is fixed for the SFAF504G variant and distinguishes it from other members of the SFAF501G–SFAF508G series, which span 50V to 600V. Exceeding this voltage risks avalanche breakdown and irreversible junction damage.
Does SFAF504G have AEC-Q101 qualification?
The base SFAF504G is not AEC-Q101 qualified; however, the AEC-Q101-compliant variant is explicitly designated as SFAF504GH per the Ordering Information table. The "H" suffix indicates full AEC-Q101 stress testing compliance-including temperature cycling, HTRB, and UHAST-making SFAF504GH suitable for automotive powertrain and chassis applications where component-level qualification is mandatory.
What is the forward voltage (VF) of SFAF504G at 5A and 25°C?
The SFAF504G exhibits a maximum forward voltage of 0.975 V at IF = 5 A and TJ = 25°C, as specified in the Electrical Specifications table (page 2, Version I2105). This value is measured under pulsed conditions (PW = 0.3 ms) and represents the upper limit-typical VF is lower. It directly impacts conduction loss and thermal design in high-current switching applications.
What package type does SFAF504G use, and is the tab electrically isolated?
SFAF504G uses the ITO-220AC package, which features an electrically isolated metal tab. Per the Mechanical Data section, the case is insulated, allowing direct mounting to a grounded heatsink without short-circuit risk. This differs from standard TO-220AC, where the tab is internally connected to the cathode.
What is the reverse recovery time (trr) specification for SFAF504G?
The SFAF504G has a maximum reverse recovery time (trr) of 35 ns, tested under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions (Electrical Specifications, page 2). This ultra-fast recovery enables efficient operation in high-frequency switching converters (e.g., >100 kHz) while minimizing switching losses and associated EMI generation.
SFAF504G 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):
- 200 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 975 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 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
SFAF504G FAQ
1.How can I place an order for SFAF504G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF504G 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 SFAF504G reliable?
The price and inventory of SFAF504G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF504G is usually 5 days.
3.What payment methods are accepted for SFAF504G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF504G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF504G?
SFAF504G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF504G 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 SFAF504G?
For technical support, including SFAF504G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF504G requirements.
6.How does Aetrix verify that SFAF504G is sourced from the original manufacturer or authorized distributors?
All SFAF504G 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 SFAF504G meets industry standards.
7.What is the process for return or replacement of SFAF504G?
All SFAF504G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF504G, 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 SFAF504G part is unused and in its original packaging.
Return procedure for SFAF504G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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