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Taiwan Semiconductor Corporation SFAS805GH
- Part No.:
- SFAS805GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SFAS805GH.pdf
- Description:
- DIODE GEN PURP 300V 8A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
SFAS805GH from Taiwan Semiconductor is an AEC-Q101-qualified super fast surface-mount rectifier in TO-263AB (D2PAK) package, rated for 400 V repetitive peak reverse voltage (VRRM), 8 A average forward current (IF), and 125 A non-repetitive surge current (IFSM). It delivers low forward voltage drop (1.30 V at 8 A, 25°C) and ultra-fast reverse recovery (35 ns), making it suitable for automotive DC-DC converters and snubber circuits.
For engineers reviewing the SFAS805GH datasheet, SFAS805GH pinout, SFAS805GH application, or SFAS805GH equivalent, key selection criteria include its 400 V VRRM, 1.30 V VF at full load, 35 ns trr, TO-263AB thermal performance (RθJC = 2.2°C/W), and AEC-Q101 qualification for under-hood automotive use.
Technical Context
The SFAS805GH employs a single-die, glass-passivated silicon junction optimized for high-speed switching and low conduction loss. Its 400 V VRRM and 35 ns reverse recovery time enable efficient operation in high-frequency flyback and freewheeling topologies.
Thermally, it features a TO-263AB (D2PAK) package with 2.2°C/W junction-to-case resistance and a maximum junction temperature of +150°C, supporting sustained 8 A conduction in automotive ambient conditions up to +105°C with appropriate heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines usable DC bus or snubber voltage range |
| IF | 8 A - Continuous average forward current at TC = 110°C; sets minimum heatsink requirement |
| IFSM | 125 A - Peak non-repetitive surge current (8.3 ms sine); supports motor startup or load dump transients |
| VF | 1.30 V @ 8 A, 25°C - Low conduction loss improves efficiency in high-current DC-DC stages |
| trr | 35 ns - Ultra-fast recovery minimizes switching losses and EMI in >100 kHz converters |
| RθJC | 2.2°C/W - Enables direct thermal coupling to PCB copper or external heatsink for thermal management |
| Junction Temp | –55°C to +150°C - Supports operation in under-hood automotive environments with wide ambient swings |
Pinout & Package
TO-263AB (D2PAK) package with three terminals: Anode (pin 1), Cathode (pin 2), and exposed drain tab (pin 3, electrically connected to cathode). Matte tin-plated leads meet J-STD-002 solderability; polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to higher-potential node (e.g., switch node in buck converter) |
| Cathode (Lead 2) | Output current exit point | Connected to output rail or ground return path; ties to exposed tab |
| Exposed Tab | Cathode connection / thermal path | Provides low-inductance cathode routing and primary heat dissipation path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| Glass passivated junction | Enhances long-term reliability and moisture resistance in humid under-hood environments |
| Low VF (1.30 V @ 8 A) | Reduces conduction loss by ~15% vs. standard fast rectifiers, lowering thermal design burden |
| 35 ns trr | Enables stable operation in 200–500 kHz switching converters without excessive ringing or shoot-through risk |
| Moisture Sensitivity Level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines |
Applications
| Automotive DC-DC Converters | Car LED Lighting Drivers |
|---|---|
Use Scenario: High-efficiency 12 V to 48 V bidirectional DC-DC conversion in 48 V mild hybrid systems. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost topology, handling 8 A continuous current during regeneration. Use Value: 35 ns trr and 1.30 V VF minimize switching and conduction losses, improving system efficiency by ≥2.1% at full load. | Use Scenario: Constant-current LED driver for adaptive front lighting (AFL) with PWM dimming and overvoltage protection. IC Role / Device Role / Timing Role: Snubber diode across MOSFET switch to clamp inductive kick and suppress voltage spikes. Use Value: 125 A IFSM withstands transient surges from lamp cold-start; 400 V VRRM covers worst-case bus overshoot. |
| Industrial Power Supplies | Freewheeling in Motor Control |
Use Scenario: Output rectification in 200 W industrial AC-DC adapter with active PFC front-end. IC Role / Device Role / Timing Role: Secondary-side super-fast rectifier in LLC resonant converter operating at 300 kHz. Use Value: 60 pF junction capacitance and 35 ns trr reduce capacitive switching loss and improve zero-voltage switching margin. | Use Scenario: Freewheeling path for brushed DC motor drive in automotive HVAC blower module. IC Role / Device Role / Timing Role: Unidirectional current path during MOSFET off-time to maintain motor current continuity. Use Value: Glass passivation and AEC-Q101 qualification ensure 15-year field reliability under vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-8EWH04FN-M3 | Same TO-263AB package, 400 V VRRM, but higher VF (1.55 V @ 8 A) and slower trr (50 ns) | Lower efficiency and higher EMI in high-frequency designs; acceptable for <100 kHz operation | Prefer SFAS805GH where efficiency or EMI is critical |
| ON Semiconductor MUR840EG | TO-220AC package, same 400 V/8 A rating, but larger footprint and higher RθJC (3.0°C/W) | Requires mechanical mounting and separate heatsink; unsuitable for dense automotive PCB layouts | Choose SFAS805GH for surface-mount space-constrained designs |
Compared with VS-8EWH04FN-M3 and MUR840EG, the SFAS805GH offers superior high-frequency performance (35 ns trr, 1.30 V VF) and automotive-grade reliability in a compact D2PAK package-enabling smaller magnetics, lower thermal mass, and simplified assembly in next-gen vehicle power systems.
Availability
SFAS805GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car LED lighting drivers, and industrial power supplies requiring stable component supply, AEC-Q101 compliance, and consistent TO-263AB packaging.
Supply support for SFAS805GH 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, TVS diodes, and rectifiers for automotive and industrial markets.
The SFAS805GH belongs to TSC's AEC-Q101-qualified SFAS super fast rectifier family, engineered specifically for high-efficiency, high-reliability automotive power conversion where low VF, fast trr, and robust thermal performance are mandatory.
FAQ
What is the repetitive peak reverse voltage (VRRM) rating for SFAS805GH?
The SFAS805GH has a repetitive peak reverse voltage rating of 400 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103). This value is fixed for the SFAS805GH variant within the SFAS801GH–SFAS808GH series and defines its maximum sustainable blocking voltage in continuous operation.
Is SFAS805GH qualified for automotive applications?
Yes, the SFAS805GH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-making SFAS805GH suitable for under-hood automotive power modules, lighting, and ADAS subsystems.
What is the forward voltage drop of SFAS805GH at rated current?
The SFAS805GH exhibits a maximum forward voltage drop of 1.30 V at 8 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects its low-conduction-loss design for high-efficiency power conversion.
Does SFAS805GH have a defined reverse recovery time (trr)?
Yes, the SFAS805GH has a typical reverse recovery time of 35 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultra-fast recovery characteristic is validated across the SFAS805GH–SFAS806GH subgroup and enables clean switching in high-frequency (>200 kHz) power topologies.
What package type does SFAS805GH use, and what are its thermal characteristics?
The SFAS805GH uses the TO-263AB (D2PAK) surface-mount package with an exposed cathode tab. Its junction-to-case thermal resistance is 2.2°C/W, and it supports a maximum junction temperature of +150°C. The package meets UL 94V-0 flammability and J-STD-020 moisture sensitivity level 1 requirements.
SFAS805GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 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
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAS805GH FAQ
1.How can I place an order for SFAS805GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAS805GH 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 SFAS805GH reliable?
The price and inventory of SFAS805GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAS805GH is usually 5 days.
3.What payment methods are accepted for SFAS805GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAS805GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAS805GH?
SFAS805GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAS805GH 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 SFAS805GH?
For technical support, including SFAS805GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAS805GH requirements.
6.How does Aetrix verify that SFAS805GH is sourced from the original manufacturer or authorized distributors?
All SFAS805GH 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 SFAS805GH meets industry standards.
7.What is the process for return or replacement of SFAS805GH?
All SFAS805GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAS805GH, 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 SFAS805GH part is unused and in its original packaging.
Return procedure for SFAS805GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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