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Taiwan Semiconductor Corporation SF803G
- Part No.:
- SF803G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SF803G.pdf
- Description:
- DIODE ARRAY GP 150V 8A TO-220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,908
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Product details
Overview
SF803G from Taiwan Semiconductor is an 8A, 150V repetitive peak reverse voltage super fast rectifier diode in TO-220AB package, featuring 35ns reverse recovery time, 0.975V forward voltage at 4A/25°C, and dual-die configuration for high-current freewheeling and DC-DC converter applications.
For engineers reviewing the SF803G datasheet, SF803G pinout, SF803G application, or SF803G equivalent, key selection criteria include VRRM = 150V, IF = 8A, trr = 35ns, RθJC = 3°C/W, and AEC-Q101 qualification availability (SF803GH variant), critical for automotive power supply and industrial switching-mode design validation.
Technical Context
The SF803G employs a super fast recovery epitaxial structure optimized for low conduction loss and minimal switching tail current. Its 150V VRRM, 125A IFSM, and 35ns trr enable efficient operation in high-frequency flyback and forward converters up to several hundred kHz.
Thermally, the TO-220AB package delivers 3°C/W junction-to-case resistance with matte tin-plated leads compliant to J-STD-002. The dual-die configuration supports symmetrical current sharing and enhanced surge robustness without external paralleling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in 12–48V DC-DC output stages |
| IF | 8 A - Continuous average forward current at case temperature ≤75°C; supports 10W–25W power conversion without forced cooling |
| trr | 35 ns - Reverse recovery time under IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables <500 kHz switching with low EMI and diode switching loss |
| VF | 0.975 V @ 4A, 25°C - Low forward voltage drop per die; reduces conduction loss to ~3.9W at 8A full-load in dual-die parallel mode |
| CJ | 70 pF @ 1MHz, 4V - Junction capacitance per diode; limits high-frequency displacement current and ringing in snubberless designs |
| RθJC | 3 °C/W - Thermal resistance from junction to case; allows 42W max power dissipation before reaching 150°C TJ with 25°C heatsink |
Pinout & Package
TO-220AB package: 3-terminal through-hole outline with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab (center) | Cathode (electrically connected) | Provides primary thermal path to heatsink; must be electrically isolated unless circuit requires common-cathode configuration |
| Lead 1 (left) | Anode | Input terminal for forward conduction; connects to switching node in freewheeling or output rectification paths |
| Lead 2 (right) | Anode | Second anode terminal for dual-die configuration; enables independent routing or parallel connection with Lead 1 |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery (trr = 35 ns) | Reduces switching losses and EMI in high-frequency SMPS, enabling compact magnetics and smaller output filters |
| Dual-die configuration | Provides redundancy and current-sharing capability; improves reliability over single-die 8A diodes in high-surge environments |
| Low VF (0.975 V @ 4A) | Lowers conduction loss by ≥15% vs. standard fast rectifiers, directly improving efficiency in 12V–48V output rails |
| AEC-Q101 qualification option (SF803GH) | Validates robustness for automotive under-hood applications including engine control and ADAS power supplies |
| RoHS + halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for industrial and consumer electronics manufacturing |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated 24V–48V input buck-derived DC-DC modules for telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling rectifier handling 8A continuous output current with minimal voltage overshoot during MOSFET turn-off. Use Value: 35ns trr prevents reverse recovery shoot-through in synchronous topologies, while 0.975V VF maintains >92% efficiency at full load. | Use Scenario: Output stage anti-parallel diode in 3-phase IGBT-based motor inverters for HVAC and industrial drives. IC Role / Device Role / Timing Role: Bidirectional current path for reactive energy return during PWM dead-time intervals. Use Value: Dual-die layout ensures balanced current distribution across phases; 125A IFSM withstands motor stall surges without derating. |
| Automotive Power Supplies | Industrial Freewheeling |
Use Scenario: Input rectification in 12V/24V automotive DC-DC converters powering infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Primary AC/DC or DC/DC input rectifier operating in ambient temperatures up to 105°C. Use Value: AEC-Q101 qualified variant (SF803GH) guarantees operation from −40°C to +150°C junction, meeting ISO 16750-4 requirements. | Use Scenario: Freewheeling path across relay coils, solenoids, and DC motor armatures in PLC I/O modules and factory automation controllers. IC Role / Device Role / Timing Role: Clamp diode suppressing inductive kickback spikes exceeding 150V peak. Use Value: 150V VRRM provides 2× safety margin over 24V/48V nominal systems; 3°C/W RθJC enables direct heatsink mounting without thermal interface pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8L06D (STMicroelectronics) | VRRM = 600V, IF = 8A, trr = 35ns, TO-220AC package (single anode) | Higher voltage rating but no dual-anode configuration; lower surge rating (IFSM = 100A) | Preferred where higher reverse margin is needed and dual-anode routing is unnecessary |
| VS-8EWH06FN-M3 (Vishay) | VRRM = 600V, IF = 8A, trr = 25ns, TO-220AC, AEC-Q101 qualified | Faster recovery but single-die; lacks dual-anode flexibility and has higher VF (1.15V @ 4A) | Selected when ultra-low trr dominates over conduction loss and layout symmetry |
Compared with STTH8L06D and VS-8EWH06FN-M3, the SF803G offers unique dual-anode terminals and lower VF at 150V rating-ideal for space-constrained, thermally demanding 24–48V freewheeling where layout symmetry and thermal coupling matter.
Availability
SF803G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial freewheeling applications requiring stable component supply, automotive-grade variants (SF803GH), and long-term industrial lifecycle support.
Supply support for SF803G 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 rectifiers, TVS devices, and MOSFETs since 1979.
The SF801G–SF808G family was designed specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and telecom infrastructure-emphasizing fast recovery, low VF, and AEC-Q101 readiness.
FAQ
What is the maximum junction temperature rating for the SF803G?
The SF803G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version I2104. This rating applies across the full operating range and supports reliable operation in under-hood automotive and high-ambient industrial environments when mounted to an appropriate heatsink. Derating curves confirm usable current down to −55°C storage temperature.
Does the SF803G have AEC-Q101 qualification?
The base SF803G is not AEC-Q101 qualified; however, the SF803GH variant-identical in electrical and thermal specifications-is explicitly qualified per AEC-Q101. The "H" suffix denotes qualification, and both versions share the same TO-220AB package, marking code, and mechanical data. Designers targeting automotive applications must specify SF803GH to ensure compliance.
How does the dual-die configuration of the SF803G affect PCB layout?
The SF803G's dual-anode configuration (Leads 1 and 2) allows symmetrical current splitting or independent routing to separate power domains. Unlike single-anode TO-220 rectifiers, this eliminates need for external paralleling and reduces loop inductance when both anodes feed adjacent switching nodes. Layout must maintain equal trace length and thermal coupling to avoid current imbalance above 5A.
What is the reverse recovery time test condition for the SF803G?
The SF803G reverse recovery time (trr) of 35ns is measured under standardized conditions: IF = 0.5A, IR = 1.0A, Irr = 0.25A, with specified pulse waveforms per JEDEC guidelines. This value is typical-not guaranteed-and applies at TA = 25°C; actual trr increases slightly at elevated junction temperatures but remains ≤50ns up to TJ = 125°C.
Is the SF803G pin-compatible with other TO-220AB rectifiers?
Yes-the SF803G uses industry-standard TO-220AB mechanical dimensions and lead spacing (1.5mm pitch, 2.54mm row spacing), making it physically compatible with all TO-220AB sockets and footprints. However, its dual-anode pinout differs from conventional single-anode TO-220AB rectifiers (e.g., STTH8L06D), so schematic symbol and netlist assignment must reflect Leads 1 and 2 as independent anodes, not redundant pins.
SF803G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io) (per Diode):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 975 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 150 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
SF803G FAQ
1.How can I place an order for SF803G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF803G 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 SF803G reliable?
The price and inventory of SF803G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF803G is usually 5 days.
3.What payment methods are accepted for SF803G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF803G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF803G?
SF803G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF803G 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 SF803G?
For technical support, including SF803G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF803G requirements.
6.How does Aetrix verify that SF803G is sourced from the original manufacturer or authorized distributors?
All SF803G 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 SF803G meets industry standards.
7.What is the process for return or replacement of SF803G?
All SF803G units undergo pre-shipment inspection (PSI). If there is an issue with SF803G, 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 SF803G part is unused and in its original packaging.
Return procedure for SF803G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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