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

Taiwan Semiconductor Corporation SFAF807G

Name: SFAF807G
Brand: Taiwan Semiconductor Corporation
SKU: SFAF807G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF807G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF807G.pdf

Description:: 35NS, 8A, 500V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:8,308

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Product details

Overview

SFAF807G from Taiwan Semiconductor is an AEC-Q101-qualified super fast rectifier diode in ITO-220AC package, rated for 500 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 1.700 V typical forward voltage at 8 A and 25°C, with 35 ns reverse recovery time (t_rr) and 60 pF junction capacitance-optimized for high-efficiency DC/DC converters and freewheeling in automotive power supplies.

For engineers reviewing the SFAF807G datasheet, SFAF807G pinout, SFAF807G application, or SFAF807G equivalent, key selection considerations include its 500 V V_RRM, 1.700 V V_F at 8 A, 35 ns t_rr, ITO-220AC thermal performance (R_θJC = 4°C/W), and AEC-Q101 qualification for under-hood automotive use.

Technical Context

The SFAF807G is a single-die, glass-passivated silicon rectifier engineered for fast switching in high-frequency power conversion. Its 35 ns reverse recovery time and low 60 pF junction capacitance minimize switching losses during turn-off transitions in SMPS topologies.

With a maximum junction temperature of 150°C and R_θJC of 4°C/W, the device supports robust thermal management when mounted to heatsinks via its ITO-220AC case. The matte tin-plated leads comply with J-STD-002 solderability standards and JESD201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	500 V - blocks up to 500 V reverse voltage in DC/DC output stages without breakdown
I_F	8 A continuous - sustains steady-state conduction in 100–300 W power supplies
I_FSM	125 A (8.3 ms) - withstands inrush and transient surges in automotive load-dump conditions
V_F	1.700 V @ 8 A, 25°C - enables <13.6 W conduction loss per device at full load
t_rr	35 ns - reduces switching loss and EMI in 100–500 kHz SMPS designs
C_J	60 pF @ 1 MHz, 4 V - limits capacitive coupling and dv/dt-induced false triggering
R_θJC	4°C/W - allows ~32°C temperature rise at 8 A conduction with adequate heatsinking

Pinout & Package

ITO-220AC package: 3-terminal through-hole outline with isolated tab (cathode-connected), matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m max mounting torque. Polarity marked on device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input current entry point	Connected to switching node or transformer secondary; must handle full I_F and I_FSM
Cathode (Lead 2)	Output current exit point	Typically tied to ground or output rail; electrically connected to metal tab for thermal path
Tab (Cathode)	Thermal & electrical cathode terminal	Provides primary heat dissipation path; requires insulating washer if mounted to grounded heatsink

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood applications including engine control and ADAS power rails
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or thermally cycled environments
Low V_F / high efficiency	1.700 V forward drop at 8 A reduces conduction loss vs. standard fast rectifiers (e.g., >2.0 V)
High surge capability	125 A I_FSM supports robust operation during cold-crank and load-dump transients
UL Recognized (E-326243)	Meets safety requirements for end-equipment certification in industrial and automotive systems

Applications

Automotive DC/DC Converters	Industrial SMPS Outputs
Use Scenario: Step-down conversion from 12 V or 48 V battery to 3.3 V/5 V/12 V rails in ADAS ECUs and infotainment modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback and forward converters. Use Value: 35 ns t_rr and 1.700 V V_F reduce switching loss and improve efficiency above 200 kHz operation.	Use Scenario: Secondary-side rectification in 200–500 W industrial switch-mode power supplies for PLCs and motor drives. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converter outputs. Use Value: 500 V V_RRM and 125 A I_FSM ensure safe operation during overvoltage and overload events.
Freewheeling in Relay Drivers	UPS Inverter Stages
Use Scenario: Snubbing inductive kickback from solenoids, fuel injectors, and HVAC actuators in vehicle chassis systems. IC Role / Device Role / Timing Role: Unidirectional freewheeling path across inductive loads during MOSFET turn-off. Use Value: Fast 35 ns recovery prevents voltage overshoot beyond 500 V rating during rapid current decay.	Use Scenario: Bidirectional energy transfer in online UPS inverters converting DC bus to 230 V AC output. IC Role / Device Role / Timing Role: High-voltage output rectifier in H-bridge or full-bridge inverter legs. Use Value: 150°C T_JMAX and R_θJC = 4°C/W support sustained conduction at elevated ambient temperatures.

Automotive DC/DC Converters

Industrial SMPS Outputs

Use Scenario: Step-down conversion from 12 V or 48 V battery to 3.3 V/5 V/12 V rails in ADAS ECUs and infotainment modules.

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

Use Value: 35 ns t_rr and 1.700 V V_F reduce switching loss and improve efficiency above 200 kHz operation.

Use Scenario: Secondary-side rectification in 200–500 W industrial switch-mode power supplies for PLCs and motor drives.

IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converter outputs.

Use Value: 500 V V_RRM and 125 A I_FSM ensure safe operation during overvoltage and overload events.

Freewheeling in Relay Drivers

UPS Inverter Stages

Use Scenario: Snubbing inductive kickback from solenoids, fuel injectors, and HVAC actuators in vehicle chassis systems.

IC Role / Device Role / Timing Role: Unidirectional freewheeling path across inductive loads during MOSFET turn-off.

Use Value: Fast 35 ns recovery prevents voltage overshoot beyond 500 V rating during rapid current decay.

Use Scenario: Bidirectional energy transfer in online UPS inverters converting DC bus to 230 V AC output.

IC Role / Device Role / Timing Role: High-voltage output rectifier in H-bridge or full-bridge inverter legs.

Use Value: 150°C T_JMAX and R_θJC = 4°C/W support sustained conduction at elevated ambient temperatures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar super fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8R06DJF	600 V V_RRM, 1.75 V V_F @ 8 A, 30 ns t_rr, TO-220AC package	Higher V_RRM margin but slightly higher V_F; identical thermal resistance	Preferred where 600 V derating headroom is required; same footprint and mounting
VS-8EWH06FN-M3	600 V V_RRM, 1.65 V V_F @ 8 A, 35 ns t_rr, TO-220AC, AEC-Q101 qualified	Lower V_F and same t_rr; RoHS/halogen-free compliant	Better conduction efficiency in thermally constrained layouts; direct AEC-Q101 alternative

Compared with STTH8R06DJF and VS-8EWH06FN-M3, the SFAF807G offers tighter V_F consistency across temperature, lower cost in volume, and proven field reliability in automotive power modules-making it optimal where 500 V rating suffices and thermal budget is moderate.

Availability

SFAF807G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and freewheeling applications requiring stable component supply, AEC-Q101 qualification, and consistent 500 V/8 A performance.

Supply support for SFAF807G 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, rectifiers, and protection components since 1979.

The SFAF801G–SFAF808G series was designed specifically for high-reliability automotive and industrial power conversion, emphasizing fast recovery, AEC-Q101 compliance, and thermal robustness in ITO-220AC packaging.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SFAF807G?

The SFAF807G has a specified V_RRM of 500 V, confirmed in the Absolute Maximum Ratings table across all official documentation versions (L2106). This rating defines the highest reverse voltage the device can block repeatedly without avalanche breakdown under normal operating conditions, making it suitable for 400 V DC bus applications with 25% design margin.

Is SFAF807G AEC-Q101 qualified?

Yes, SFAF807G is AEC-Q101 qualified-explicitly stated in the FEATURES section and reinforced by the "H" suffix option (SFAF807GH) in the Ordering Information table. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life, validating suitability for automotive under-hood use.

What is the forward voltage (V_F) of SFAF807G at 8 A and 25°C?

The SFAF807G exhibits a typical forward voltage of 1.700 V at I_F = 8 A and T_J = 25°C, as published in the Electrical Specifications table under "Forward voltage(1)". This value is measured using a 0.3 ms pulse test and represents the conduction loss baseline for thermal and efficiency calculations in power supply designs.

Does SFAF807G have a defined reverse recovery time (t_rr)?

Yes, the SFAF807G has a maximum reverse recovery time of 35 ns, specified under ELECTRICAL SPECIFICATIONS with test conditions: I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A. This parameter is critical for minimizing switching loss and EMI in high-frequency converters and is consistent across the SFAF805G–SFAF808G group.

What package type does SFAF807G use, and is the tab electrically active?

SFAF807G uses the ITO-220AC package, with the metal tab internally connected to the cathode terminal. As confirmed in the MECHANICAL DATA and PACKAGE OUTLINE sections, this configuration provides both thermal conduction and electrical functionality-requiring electrical isolation (e.g., mica washer) when mounted to a grounded heatsink.

SFAF807G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2 Full Pack

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 500 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 8 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 500 V

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AC

Operating Temperature - Junction:: -55°C ~ 150°C

SFAF807G FAQ

1.How can I place an order for SFAF807G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF807G 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 SFAF807G reliable?

The price and inventory of SFAF807G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF807G is usually 5 days.

3.What payment methods are accepted for SFAF807G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF807G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF807G?

SFAF807G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF807G 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 SFAF807G?

For technical support, including SFAF807G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF807G requirements.

6.How does Aetrix verify that SFAF807G is sourced from the original manufacturer or authorized distributors?

All SFAF807G 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 SFAF807G meets industry standards.

7.What is the process for return or replacement of SFAF807G?

All SFAF807G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF807G, 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 SFAF807G part is unused and in its original packaging.

Return procedure for SFAF807G:

1.Submit a request within 90 days.

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

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