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

Taiwan Semiconductor Corporation SFAF1003G

Name: SFAF1003G
Brand: Taiwan Semiconductor Corporation
SKU: SFAF1003G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF1003G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF1003G.pdf

Description:: 35NS, 10A, 150V, SUPER FAST RECO

Quantity:: RFQ Add To RFQ list

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Inventory:7,488

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Product details

Overview

SFAF1003G from Taiwan Semiconductor is a 10 A, 150 V repetitive peak reverse voltage (V_RRM) super fast rectifier diode in ITO-220AC package, featuring 35 ns reverse recovery time (t_rr), 0.975 V forward voltage at 10 A/25°C, and 4 °C/W junction-to-case thermal resistance - deployed in DC-DC converter freewheeling paths.

For engineers reviewing the SFAF1003G datasheet, SFAF1003G pinout, SFAF1003G application, or SFAF1003G equivalent, key selection criteria include V_RRM=150 V, t_rr≤35 ns, VF≤0.975 V @10A, thermal R_θJC=4 °C/W, and AEC-Q101 qualification availability (SFAF1003GH variant).

Technical Context

The SFAF1003G uses a glass-passivated single-die silicon junction optimized for high-efficiency switching applications. Its 150 V V_RRM, 150 A non-repetitive surge rating (I_FSM), and 35 ns t_rr support fast turn-off in high-frequency SMPS topologies.

Thermal performance is defined by R_θJC = 4 °C/W and T_J max = 150 °C, enabling reliable operation under sustained 10 A conduction with appropriate heatsinking. Junction capacitance is 170 pF at 1 MHz / 4.0 V reverse bias.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - supports input/output rail isolation up to 150 V DC in buck, boost, and flyback converters
I_F	10 A continuous - rated for steady-state conduction in medium-power power supplies
t_rr	35 ns - enables operation at switching frequencies ≥100 kHz with low commutation loss
V_F	0.975 V @10 A, 25°C - reduces conduction loss vs. standard rectifiers (e.g., ~1.1 V typical for FR series)
R_θJC	4 °C/W - allows direct mounting to heatsink for thermal management in compact industrial designs
C_J	170 pF @1 MHz, 4 V - limits capacitive coupling noise in high-dv/dt gate-drive or snubber circuits

Pinout & Package

Package: ITO-220AC - insulated thermoplastic outline with single-row 3-terminal configuration, matte tin-plated leads, UL 94V-0 molding compound, and polarity marking on case.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Current entry terminal during forward conduction	Connected to switch node or transformer secondary winding in freewheeling path
Cathode (K)	Current exit terminal during forward conduction	Connected to output capacitor or ground return path; carries full load current
Case (Tab)	Electrically connected to cathode	Provides mechanical mounting surface and thermal path to heatsink; must be isolated if cathode is not at chassis ground

Key Features

Feature	Design Value
Super fast recovery (t_rr ≤ 35 ns)	Minimizes reverse recovery charge (Q_rr) and associated switching losses in high-frequency converters
Glass passivated junction	Ensures long-term reliability and moisture resistance without additional conformal coating
UL Recognized (E-326243)	Validates safety compliance for end-equipment certification in industrial and automotive power systems
AEC-Q101 qualified option (SFAF1003GH)	Supports automotive-grade deployment in engine control, ADAS power modules, and infotainment DC-DC stages

Applications

DC-DC Converter Freewheeling	Switching Mode Inverter Output
Use Scenario: Freewheeling path in synchronous or non-synchronous buck converters delivering 12–48 V output at 5–15 A. IC Role / Device Role: Unidirectional current clamp preventing inductive kickback during high-side switch off-time. Use Value: 35 ns t_rr and 0.975 V V_F reduce switching loss and improve efficiency over standard FR diodes by ≥2% at 200 kHz.	Use Scenario: Output rectification stage in 1–3 kW single-phase inverters for solar microinverters or UPS systems. IC Role / Device Role: High-current AC-to-DC conversion with minimal reverse recovery stress on IGBT/MOSFET switches. Use Value: 150 A I_FSM withstands line transients; 150 V V_RRM matches 120 VAC-derived DC bus requirements.
Industrial Motor Drive Snubber	Automotive HVAC Power Supply
Use Scenario: RC snubber network across IGBT collector-emitter in 0.5–2 kW variable frequency drives. IC Role / Device Role: Fast clamping of inductive voltage spikes during IGBT turn-off. Use Value: Low C_J (170 pF) minimizes snubber loading; glass passivation ensures stability under vibration and thermal cycling.	Use Scenario: 12 V input DC-DC stage powering HVAC blower motor controllers in passenger vehicles. IC Role / Device Role: Input rectifier in isolated flyback or forward converter with 150 V transient tolerance. Use Value: AEC-Q101-qualified variant (SFAF1003GH) meets automotive temperature (-40°C to +125°C ambient) and reliability requirements.

DC-DC Converter Freewheeling

Switching Mode Inverter Output

Use Scenario: Freewheeling path in synchronous or non-synchronous buck converters delivering 12–48 V output at 5–15 A.

IC Role / Device Role: Unidirectional current clamp preventing inductive kickback during high-side switch off-time.

Use Value: 35 ns t_rr and 0.975 V V_F reduce switching loss and improve efficiency over standard FR diodes by ≥2% at 200 kHz.

Use Scenario: Output rectification stage in 1–3 kW single-phase inverters for solar microinverters or UPS systems.

IC Role / Device Role: High-current AC-to-DC conversion with minimal reverse recovery stress on IGBT/MOSFET switches.

Use Value: 150 A I_FSM withstands line transients; 150 V V_RRM matches 120 VAC-derived DC bus requirements.

Industrial Motor Drive Snubber

Automotive HVAC Power Supply

Use Scenario: RC snubber network across IGBT collector-emitter in 0.5–2 kW variable frequency drives.

IC Role / Device Role: Fast clamping of inductive voltage spikes during IGBT turn-off.

Use Value: Low C_J (170 pF) minimizes snubber loading; glass passivation ensures stability under vibration and thermal cycling.

Use Scenario: 12 V input DC-DC stage powering HVAC blower motor controllers in passenger vehicles.

IC Role / Device Role: Input rectifier in isolated flyback or forward converter with 150 V transient tolerance.

Use Value: AEC-Q101-qualified variant (SFAF1003GH) meets automotive temperature (-40°C to +125°C ambient) and reliability requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH10R06DJF	V_RRM=600 V, t_rr=30 ns, V_F=1.05 V @10A, TO-220AC package	Higher voltage rating suits 400 V DC bus; slightly higher VF increases conduction loss	Select when system requires >150 V reverse blocking margin or tighter t_rr tolerance
ON Semi MUR1020CT	Dual common-cathode configuration, V_RRM=200 V, t_rr=35 ns, V_F=0.92 V @10A, TO-220AB	Offers dual-diode integration but requires PCB layout change; lower VF improves light-load efficiency	Choose for space-constrained dual-rail designs where shared cathode simplifies routing

Compared with STTH10R06DJF and MUR1020CT, the SFAF1003G provides optimal balance of 150 V rating, 0.975 V VF, and proven AEC-Q101 qualification path - making it preferred for cost-sensitive 12–48 V industrial and automotive auxiliary power supplies.

Availability

SFAF1003G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for SFAF1003G 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 global industrial, computing, and automotive markets since 1979.

The SFAF1003G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in compact, thermally constrained environments - emphasizing low V_F, fast t_rr, and robust packaging for industrial and automotive-grade deployments.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the SFAF1003G?

The SFAF1003G has a V_RRM of 150 V, as specified in the Absolute Maximum Ratings table. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It is critical for selecting appropriate input/output voltage margins in buck, boost, and flyback topologies where the SFAF1003G is used as a freewheeling or output rectifier.

Does the SFAF1003G have AEC-Q101 qualification?

The base SFAF1003G is not AEC-Q101 qualified; however, the variant SFAF1003GH is explicitly listed as AEC-Q101 qualified in the Ordering Information section. Engineers requiring automotive-grade reliability must specify the 'H' suffix part number to ensure compliance with stress testing requirements for temperature cycling, humidity, and mechanical shock.

What is the forward voltage (V_F) of the SFAF1003G at rated current?

The SFAF1003G exhibits a maximum forward voltage of 0.975 V at 10 A and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents a key efficiency parameter - lower V_F directly reduces conduction loss compared to alternatives like standard FR or UF diodes.

What package type does the SFAF1003G use, and how is polarity marked?

The SFAF1003G uses the ITO-220AC package, a 3-terminal insulated thermoplastic outline with cathode-connected metal tab. Polarity is marked on the device body per the Marking Diagram: the cathode is indicated by a band or notch adjacent to the cathode lead, and the tab is electrically tied to the cathode - requiring electrical isolation from heatsink unless circuit topology permits common-cathode mounting.

How does the thermal resistance (R_θJC) of the SFAF1003G impact heatsink design?

The SFAF1003G has a junction-to-case thermal resistance of 4 °C/W, meaning each watt of dissipated power raises the junction temperature 4°C above the case temperature. For a 10 A load with 0.975 V drop (9.75 W), a 20°C temperature rise above ambient requires a heatsink with ≤1.6 °C/W total thermal resistance (including interface material and mounting). This value enables compact thermal solutions in space-limited industrial power supplies.

SFAF1003G 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):: 150 V

Current - Average Rectified (Io):: 10A

Voltage - Forward (Vf) (Max) @ If:: 975 mV @ 10 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 150 V

Capacitance @ Vr, F:: 170pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AC

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

SFAF1003G FAQ

1.How can I place an order for SFAF1003G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF1003G 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 SFAF1003G reliable?

The price and inventory of SFAF1003G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF1003G is usually 5 days.

3.What payment methods are accepted for SFAF1003G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF1003G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF1003G?

SFAF1003G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF1003G 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 SFAF1003G?

For technical support, including SFAF1003G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF1003G requirements.

6.How does Aetrix verify that SFAF1003G is sourced from the original manufacturer or authorized distributors?

All SFAF1003G 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 SFAF1003G meets industry standards.

7.What is the process for return or replacement of SFAF1003G?

All SFAF1003G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF1003G, 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 SFAF1003G part is unused and in its original packaging.

Return procedure for SFAF1003G:

1.Submit a request within 90 days.

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

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