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Taiwan Semiconductor Corporation SF805G
- Part No.:
- SF805G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SF805G.pdf
- Description:
- DIODE ARRAY GP 300V 8A TO-220AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,730
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Product details
Overview
SF805G from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 300V super fast rectifier diode in TO-220AB package, featuring 1.300V forward voltage at 4A/25°C, 35ns reverse recovery time, and 50pF junction capacitance per diode-used in DC-DC converters and freewheeling paths in automotive power supplies.
For engineers reviewing the SF805G datasheet, SF805G pinout, SF805G application, or SF805G equivalent, key selection criteria include its 300V VRRM, dual-die configuration, thermal resistance of 3°C/W, and compliance with JESD201 Class 2 whisker testing for under-hood reliability.
Technical Context
The SF805G integrates two independent high-speed silicon rectifier dies in a single TO-220AB package, enabling dual-channel freewheeling or bridge configurations. Its 35ns trr and low 1.300V VF at 4A support high-frequency switching up to 100kHz in SMPS designs.
Thermally, it delivers RθJC = 3°C/W with a 150°C maximum junction temperature, and maintains <10µA reverse leakage at 25°C and <400µA at 100°C-critical for maintaining efficiency in thermally constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - supports input rails up to 300V DC without breakdown in boost or flyback stages |
| IF | 8 A - continuous forward current rating suitable for primary-side output rectification in 100W+ converters |
| IFSM | 125 A - handles 8.3ms surge transients common during motor startup or load dump events |
| VF | 1.300 V @ 4A, 25°C - enables low conduction loss in high-duty-cycle freewheeling applications |
| trr | 35 ns - minimizes switching losses and EMI generation in >50kHz switching topologies |
| CJ | 50 pF - reduces capacitive coupling noise and improves dynamic response in fast-switching nodes |
| RθJC | 3 °C/W - allows direct heatsink mounting for thermal management in space-constrained engine control units |
Pinout & Package
TO-220AB package with center-tab cathode configuration; matte tin-plated leads compliant with J-STD-002 solderability; polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first rectifier die | Accepts AC or switched DC input; electrically isolated from Anode 2 |
| Anode 2 | Input terminal for second rectifier die | Enables dual independent rectification paths or full-wave bridge integration |
| Cathode (Tab) | Common output node and thermal path | Electrically connected to both dies; serves as primary heatsink interface and circuit return |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications including under-hood temperature cycling and vibration stress |
| Super fast recovery (35ns) | Reduces turn-off loss and ringing in high-frequency synchronous rectifiers and LLC resonant converters |
| Dual-die TO-220AB construction | Enables compact dual-output or half-bridge freewheeling without discrete component count increase |
| Low 1.300V forward voltage | Lowers conduction loss by ~18% vs. standard fast rectifiers at 4A, improving system efficiency in 12–48V DC-DC stages |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-reliability automotive electronics over 15-year service life |
Applications
| Automotive DC-DC Converters | Industrial Switching Inverters |
|---|---|
Use Scenario: Step-down conversion from 48V battery to 12V auxiliary rail in mild hybrid vehicles. IC Role / Device Role / Timing Role: Primary freewheeling diode in synchronous buck converter operating at 100kHz. Use Value: 35ns trr and 1.300V VF reduce switching and conduction losses, enabling >94% efficiency at full 8A load. | Use Scenario: Output rectification in 3kW three-phase inverter for HVAC compressors. IC Role / Device Role / Timing Role: Dual-die configuration used as two independent leg freewheeling paths. Use Value: Dual dies eliminate need for two separate TO-220 devices, saving PCB area and thermal interface complexity. |
| Freewheeling in Motor Drives | Switched-Mode Power Supplies |
Use Scenario: Back-EMF clamping in 750W BLDC motor gate driver stage. IC Role / Device Role / Timing Role: Fast recovery diode across low-side MOSFET to absorb inductive kickback. Use Value: 125A IFSM withstands repetitive 100A motor stall surges without degradation. | Use Scenario: Secondary-side rectification in 200W telecom offline SMPS. IC Role / Device Role / Timing Role: High-current output rectifier in forward converter topology. Use Value: 3°C/W RθJC enables direct heatsink mounting, simplifying thermal design for convection-cooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R03G | 300V VRRM, 8A IF, 30ns trr, 1.25V VF @ 4A - slightly faster but non-AEC-Q101 rated | Preferred for industrial SMPS where automotive qualification is not required | Select when lower trr and VF outweigh automotive compliance needs |
| VS-8EWH03FN-M3 | 300V VRRM, 8A IF, 35ns trr, 1.35V VF @ 4A - AEC-Q101 qualified, same trr, higher VF | Used in EV onboard chargers requiring extended temperature validation | Choose when broader automotive qualification scope (e.g., PPAP support) is mandatory |
Compared with STTH8R03G and VS-8EWH03FN-M3, the SF805G offers balanced performance: identical 35ns recovery to the Vishay part with lower VF, and AEC-Q101 qualification missing in the STMicro part-making it optimal for cost-sensitive automotive power modules requiring validated reliability.
Availability
SF805G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching inverters, and motor drive freewheeling applications requiring stable component supply and long-lifecycle availability.
Supply support for SF805G 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SF801G–SF808G series was designed specifically for high-reliability automotive power conversion, emphasizing AEC-Q101 qualification, low-loss fast recovery, and robust thermal performance in TO-220AB packaging.
FAQ
What is the peak repetitive reverse voltage rating of the SF805G?
The SF805G has a peak repetitive reverse voltage (VRRM) rating of 300 V, verified per the manufacturer's absolute maximum ratings table. This value defines the maximum DC or peak AC reverse voltage the device can block continuously without breakdown. The SF805G is the 300V member of the SF801G–SF808G family, where "05" directly maps to 300V in the ordering code.
Is the SF805G AEC-Q101 qualified?
Yes, the SF805G is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the official datasheet. This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock-validating its suitability for automotive power electronics such as engine control units and ADAS power supplies.
What is the forward voltage drop of the SF805G at rated current?
The SF805G exhibits a typical forward voltage (VF) of 1.300 V at 4 A and 25°C junction temperature, per the ELECTRICAL SPECIFICATIONS table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects conduction loss behavior in real-world switching applications like DC-DC converters.
Does the SF805G have a dual-die configuration, and how is it implemented?
Yes, the SF805G uses a dual-die configuration housed in a single TO-220AB package. The two anodes are electrically isolated, while the cathodes are internally tied to the metal tab. This structure supports independent freewheeling paths or half-bridge implementations without external isolation components.
What is the thermal resistance from junction to case for the SF805G?
The SF805G has a typical junction-to-case thermal resistance (RθJC) of 3°C/W, as specified in the THERMAL PERFORMANCE section. This value assumes proper mounting with recommended torque (≤0.56 N·m) to a heatsink and enables accurate thermal modeling for automotive under-hood ambient temperatures up to 125°C.
SF805G 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):
- 300 V
- Current - Average Rectified (Io) (per Diode):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 300 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
SF805G FAQ
1.How can I place an order for SF805G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF805G 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 SF805G reliable?
The price and inventory of SF805G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF805G is usually 5 days.
3.What payment methods are accepted for SF805G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF805G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF805G?
SF805G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF805G 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 SF805G?
For technical support, including SF805G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF805G requirements.
6.How does Aetrix verify that SF805G is sourced from the original manufacturer or authorized distributors?
All SF805G 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 SF805G meets industry standards.
7.What is the process for return or replacement of SF805G?
All SF805G units undergo pre-shipment inspection (PSI). If there is an issue with SF805G, 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 SF805G part is unused and in its original packaging.
Return procedure for SF805G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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