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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SFAS806GH

Name: SFAS806GH
Brand: Taiwan Semiconductor Corporation
SKU: SFAS806GH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAS806GH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: SFAS806GH.pdf

Description:: DIODE GEN PURP 400V 8A TO263AB

Quantity:: RFQ Add To RFQ list

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Inventory:1,600

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Product details

Overview

SFAS806GH 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 (V_RRM), 8 A average forward current (I_F), and 125 A non-repetitive surge current (I_FSM). 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 SFAS806GH datasheet, SFAS806GH pinout, SFAS806GH application, or SFAS806GH equivalent, key selection criteria include its 400 V V_RRM, 1.30 V V_F at full load, 35 ns t_rr, TO-263AB thermal resistance (2.2 °C/W), and AEC-Q101 qualification for automotive reliability.

Technical Context

The SFAS806GH employs a single-die, glass-passivated silicon junction optimized for high-speed switching and low conduction loss. Its 400 V V_RRM and 35 ns reverse recovery time enable efficient operation in high-frequency flyback and forward converter topologies.

Thermally, it features a low junction-to-case resistance of 2.2 °C/W and operates across –55°C to +150°C junction temperature range. Its matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum blocking voltage in repetitive reverse-biased operation
I_F	8 A - Continuous average forward current at case temperature ≤ 110°C
I_FSM	125 A - Peak non-repetitive surge current (8.3 ms half-sine)
V_F	1.30 V - Forward voltage drop at 8 A, 25°C; determines conduction loss in power stage
t_rr	35 ns - Reverse recovery time at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; critical for EMI and switching loss
R_θJC	2.2 °C/W - Junction-to-case thermal resistance; enables high-power dissipation with minimal heatsink
Junction Temp	–55°C to +150°C - Operating range compatible with under-hood automotive environments

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-anode/single-cathode configuration. Case serves as cathode terminal. Moisture sensitivity level 1 (J-STD-020).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current input	Connected to positive side of AC source or switch node in freewheeling path
Cathode (Case/Tab)	Forward current output / Heat sink interface	Electrically and thermally connected to PCB copper pour; must be routed as cathode return

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing
Glass-passivated junction	Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives
Low V_F (1.30 V @ 8 A)	Reduces conduction losses by ~15% compared to standard fast rectifiers at same current
35 ns t_rr	Minimizes switching loss and diode-induced ringing in >100 kHz DC-DC stages
TO-263AB thermal performance	2.2 °C/W R_θJC supports 8 A continuous operation with moderate PCB copper area

Applications

Automotive DC-DC Converters	LED Headlamp Drivers
Use Scenario: High-efficiency 12 V to 5 V/3.3 V buck-derived converters powering ADAS sensors and infotainment ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 400 V V_RRM and 35 ns t_rr suppress voltage overshoot during MOSFET turn-off, improving system efficiency and EMI compliance.	Use Scenario: Constant-current LED drivers for adaptive front lighting systems (AFS) with PWM dimming. IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED driver chokes. Use Value: Low 1.30 V V_F reduces power dissipation in high-duty-cycle operation, enabling compact thermal design.
Snubber Networks	Industrial Power Supplies
Use Scenario: RC-D clamp snubbers across MOSFETs in offline SMPS and motor drives. IC Role / Device Role / Timing Role: Fast-recovery diode in dissipative snubber path. Use Value: 35 ns t_rr ensures rapid turn-off, preventing snubber capacitor recharging and minimizing energy loss.	Use Scenario: Output rectification in 24 V/48 V industrial PLC power modules with wide ambient temperature range. IC Role / Device Role / Timing Role: Primary output rectifier in isolated forward converter. Use Value: AEC-Q101 qualification and –55°C to +150°C operation ensure reliability in uncontrolled cabinet environments.

Automotive DC-DC Converters

LED Headlamp Drivers

Use Scenario: High-efficiency 12 V to 5 V/3.3 V buck-derived converters powering ADAS sensors and infotainment ECUs.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology.

Use Value: 400 V V_RRM and 35 ns t_rr suppress voltage overshoot during MOSFET turn-off, improving system efficiency and EMI compliance.

Use Scenario: Constant-current LED drivers for adaptive front lighting systems (AFS) with PWM dimming.

IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED driver chokes.

Use Value: Low 1.30 V V_F reduces power dissipation in high-duty-cycle operation, enabling compact thermal design.

Snubber Networks

Industrial Power Supplies

Use Scenario: RC-D clamp snubbers across MOSFETs in offline SMPS and motor drives.

IC Role / Device Role / Timing Role: Fast-recovery diode in dissipative snubber path.

Use Value: 35 ns t_rr ensures rapid turn-off, preventing snubber capacitor recharging and minimizing energy loss.

Use Scenario: Output rectification in 24 V/48 V industrial PLC power modules with wide ambient temperature range.

IC Role / Device Role / Timing Role: Primary output rectifier in isolated forward converter.

Use Value: AEC-Q101 qualification and –55°C to +150°C operation ensure reliability in uncontrolled cabinet environments.

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	400 V V_RRM, 8 A I_F, 1.25 V V_F @ 8 A, 30 ns t_rr, TO-252AA (DPAK)	Smaller DPAK package; lower thermal resistance not achievable without external heatsink	Preferred where board space is constrained but thermal budget allows DPAK mounting
ON Semiconductor MUR840G	400 V V_RRM, 8 A I_F, 1.35 V V_F @ 8 A, 60 ns t_rr, TO-220AC	Through-hole TO-220; slower recovery increases switching loss in high-frequency designs	Acceptable for <100 kHz supplies where layout simplicity outweighs efficiency loss

Compared with VS-8EWH04FN-M3 and MUR840G, the SFAS806GH offers superior thermal performance via TO-263AB (2.2 °C/W vs. ~3.5 °C/W for DPAK and ~2.8 °C/W for TO-220), tighter t_rr control than MUR840G, and AEC-Q101 validation not present in either alternative.

Availability

SFAS806GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial snubber networks requiring stable component supply, AEC-Q101 compliance, and high-reliability surface-mount rectification.

Supply support for SFAS806GH 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, serving automotive, industrial, and consumer markets since 1979.

The SFAS80xGH series was developed specifically for high-reliability automotive power conversion, emphasizing fast recovery, low V_F, and robust thermal performance in surface-mount packaging.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SFAS806GH?

The SFAS806GH has a V_RRM rating of 400 V, as confirmed in the Absolute Maximum Ratings table on page 2 of the official TSC datasheet (Version A2103). This value is specific to SFAS806GH and distinguishes it from other members of the SFAS801GH–SFAS808GH family, which span 50 V to 600 V.

Is SFAS806GH qualified for automotive applications?

Yes, SFAS806GH is explicitly AEC-Q101 qualified per the Features section of the TSC datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), confirming suitability for under-hood and safety-critical automotive subsystems.

What is the forward voltage (V_F) of SFAS806GH at rated current?

The SFAS806GH exhibits a maximum forward voltage 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 typical conduction loss behavior in real-world switching applications.

Does SFAS806GH have a defined reverse recovery time (t_rr)?

Yes, the SFAS806GH has a maximum reverse recovery time of 35 ns, tested at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This parameter is shared across SFAS805GH–SFAS808GH and is critical for minimizing switching loss and EMI in high-frequency power converters.

What package type does SFAS806GH use, and how is polarity marked?

SFAS806GH uses the TO-263AB (D2PAK) surface-mount package. Polarity is marked on the device body: the cathode is the exposed metal tab (case), and the anode is lead 1. The marking code "SFAS806G" appears on the top surface, with "G" indicating green molding compound.

SFAS806GH 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):: 400 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 @ 400 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

SFAS806GH FAQ

1.How can I place an order for SFAS806GH through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAS806GH 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 SFAS806GH reliable?

The price and inventory of SFAS806GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAS806GH is usually 5 days.

3.What payment methods are accepted for SFAS806GH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAS806GH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAS806GH?

SFAS806GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAS806GH 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 SFAS806GH?

For technical support, including SFAS806GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAS806GH requirements.

6.How does Aetrix verify that SFAS806GH is sourced from the original manufacturer or authorized distributors?

All SFAS806GH 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 SFAS806GH meets industry standards.

7.What is the process for return or replacement of SFAS806GH?

All SFAS806GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAS806GH, 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 SFAS806GH part is unused and in its original packaging.

Return procedure for SFAS806GH:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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