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Taiwan Semiconductor Corporation SFAS801GH
- Part No.:
- SFAS801GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SFAS801GH.pdf
- Description:
- 35NS, 8A, 50V, SUPER FAST RECOVE
- Quantity:
- Payment:
- Shipping:
Inventory:2,564
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Product details
Overview
SFAS801GH from Taiwan Semiconductor is a single-die, AEC-Q101-qualified super fast surface-mount rectifier in TO-263AB (D2PAK) package, rated for 50 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 (0.95 V at 8 A, 25°C), 35 ns reverse recovery time (trr), and 80 pF junction capacitance-optimized for automotive DC-DC converters and freewheeling circuits.
For engineers reviewing the SFAS801GH datasheet, SFAS801GH pinout, SFAS801GH application, or SFAS801GH equivalent, key selection criteria include its AEC-Q101 qualification, 2.2°C/W junction-to-case thermal resistance, glass-passivated die, moisture sensitivity level 1 rating, and compatibility with automated SMT placement in high-reliability automotive power stages.
Technical Context
The SFAS801GH employs a super fast recovery epitaxial silicon PN junction with glass passivation, enabling 35 ns reverse recovery time and low stored charge for minimal switching loss in hard-switched topologies. Its 50 V VRRM rating targets low-voltage DC-DC secondary-side rectification and snubber networks where fast turn-off and low conduction loss are critical.
Thermally, the TO-263AB (D2PAK) package provides 2.2°C/W RθJC, supporting 8 A continuous operation up to 150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity-enabling robust reflow processing without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating range in low-voltage DC-DC output stages. |
| IF | 8 A - Continuous average forward current at TC = 110°C; supports high-current automotive lighting and power supply rails. |
| IFSM | 125 A - Peak non-repetitive surge current (8.3 ms half-sine); handles inrush and fault transients without failure. |
| VF | 0.95 V @ 8 A, 25°C - Low conduction loss reduces heat generation and improves efficiency in compact layouts. |
| trr | 35 ns - Fast reverse recovery minimizes switching losses and EMI in high-frequency (>100 kHz) converters. |
| RθJC | 2.2 °C/W - Enables direct heatsinking via exposed tab; simplifies thermal design for 8 A operation at elevated ambient. |
| CJ | 80 pF @ 1 MHz, 4 V - Low junction capacitance limits displacement current and improves high-speed snubber performance. |
Pinout & Package
TO-263AB (D2PAK) package with three terminals: Anode (pin 1), Cathode (pin 2), and Exposed Thermal Pad (pin 3, electrically connected to cathode). Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/switching node in freewheeling or rectifier configuration; polarity-marked on top surface. |
| Cathode | Forward current exit / reverse blocking terminal | Electrically tied to exposed thermal pad; must be routed to low-impedance ground or return plane for thermal and electrical performance. |
| Exposed Pad | Thermal path and cathode extension | Requires ≥70% copper fill on PCB for optimal heat transfer; no isolation needed as it is cathode-connected. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including temperature cycling, HTRB, and ESD stress per AEC standard. |
| Glass-passivated junction | Enhances long-term reliability and humidity resistance versus polymer-passivated alternatives in harsh environments. |
| Low VF (0.95 V) | Reduces conduction loss by ~15–20% vs. standard fast rectifiers at 8 A, lowering thermal load in space-constrained modules. |
| 35 ns trr | Enables use in 200–500 kHz DC-DC converters without significant switching loss penalty or snubber complexity. |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement before reflow, reducing manufacturing cost and process risk in high-volume SMT lines. |
Applications
| Automotive DC-DC Converter | LED Headlamp Driver |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 12 V → 5 V/3.3 V buck converters powering ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode during high-side switch off-time; conducts 8 A average current with minimal voltage drop. Use Value: 0.95 V VF and 35 ns trr reduce power loss and EMI, enabling smaller output filters and higher efficiency at 300 kHz switching. | Use Scenario: Constant-current LED driver for adaptive front lighting systems with PWM dimming. IC Role / Device Role / Timing Role: Snubber diode across MOSFET switch to clamp inductive kickback during rapid LED current transitions. Use Value: 125 A IFSM withstands transient overcurrents; 80 pF CJ ensures fast clamping response without parasitic resonance. |
| Start-Stop System Power Rail | On-Board Charger Auxiliary Supply |
Use Scenario: Input rectification for 12 V auxiliary power supply in engine start-stop systems with wide input voltage swings. IC Role / Device Role / Timing Role: Unidirectional current path during battery regeneration pulses; blocks reverse current during cranking dips. Use Value: 50 V VRRM accommodates 14.5 V nominal + 25% transients; AEC-Q101 qualification ensures lifetime reliability over 15 years. | Use Scenario: Isolated auxiliary supply rectifier in OBC high-voltage DC-DC stage (e.g., 400 V → 12 V). IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter delivering 8 A to control logic and gate drivers. Use Value: 2.2°C/W RθJC allows direct mounting to metal-core PCB, eliminating discrete heatsink and saving board area. |
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-8EWH05FN-M3 | Same TO-263AB package, 50 V VRRM, but 7.5 A IF and 50 ns trr; VF = 0.92 V @ 8 A. | Marginally lower surge rating (110 A IFSM) and slower recovery limit use in >250 kHz designs. | Select when lower VF is prioritized over speed; verify thermal margin at 8 A continuous. |
| ON Semiconductor MUR850G | TO-263AB, 50 V VRRM, 8 A IF, but 60 ns trr and no AEC-Q101 qualification; VF = 0.97 V @ 8 A. | Lacks automotive qualification and has higher switching loss; suitable only for industrial/non-automotive use. | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not required. |
Compared with VS-8EWH05FN-M3 and MUR850G, the SFAS801GH offers superior combination of AEC-Q101 compliance, 35 ns trr, and 125 A IFSM-making it the preferred choice for automotive-grade 8 A rectification where reliability and high-frequency efficiency are jointly critical.
Availability
SFAS801GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and start-stop system power rails requiring stable component supply, AEC-Q101 assurance, and consistent TO-263AB sourcing.
Supply support for SFAS801GH 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 Company (TSC) is a vertically integrated analog and power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SFAS801GH belongs to TSC's AEC-Q101-qualified Super Fast Rectifier product line, 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 maximum junction temperature rating for SFAS801GH?
The SFAS801GH has a maximum junction temperature (TJ) of +150°C, with operational storage temperature ranging from –55°C to +150°C. This rating enables reliable operation in under-hood automotive environments when mounted on thermally optimized PCBs with adequate copper area for the exposed cathode pad. Derating curves confirm 8 A continuous current is sustainable up to 110°C case temperature.
Is SFAS801GH qualified for automotive applications?
Yes, SFAS801GH is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge per the AEC-Q101 standard. This qualification validates its suitability for automotive power systems such as DC-DC converters, LED drivers, and start-stop auxiliary supplies where long-term reliability under thermal and electrical stress is required.
What is the reverse recovery time (trr) of SFAS801GH and how is it measured?
The SFAS801GH has a typical reverse recovery time (trr) of 35 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC test methodology. This value reflects its super fast recovery capability, directly contributing to reduced switching losses and improved efficiency in high-frequency DC-DC converters operating above 200 kHz.
Does SFAS801GH have moisture sensitivity level (MSL) restrictions for PCB assembly?
No, SFAS801GH is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. This eliminates handling overhead and process risk in high-volume SMT lines, supporting seamless integration into automotive electronics manufacturing without special moisture-control protocols.
What is the thermal resistance from junction to case (RθJC) for SFAS801GH?
The SFAS801GH has a typical junction-to-case thermal resistance (RθJC) of 2.2°C/W, measured from the silicon die to the exposed cathode pad. This low value enables efficient heat transfer to the PCB copper pour or heatsink, supporting full 8 A current handling at case temperatures up to 110°C-critical for compact, fanless automotive power modules.
SFAS801GH 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):
- 50 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAS801GH FAQ
1.How can I place an order for SFAS801GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAS801GH 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 SFAS801GH reliable?
The price and inventory of SFAS801GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAS801GH is usually 5 days.
3.What payment methods are accepted for SFAS801GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAS801GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAS801GH?
SFAS801GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAS801GH 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 SFAS801GH?
For technical support, including SFAS801GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAS801GH requirements.
6.How does Aetrix verify that SFAS801GH is sourced from the original manufacturer or authorized distributors?
All SFAS801GH 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 SFAS801GH meets industry standards.
7.What is the process for return or replacement of SFAS801GH?
All SFAS801GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAS801GH, 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 SFAS801GH part is unused and in its original packaging.
Return procedure for SFAS801GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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