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

Taiwan Semiconductor Corporation SFAF2002G C0G

Name: SFAF2002G C0G
Brand: Taiwan Semiconductor Corporation
SKU: SFAF2002G C0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF2002G C0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF2002G C0G.pdf

Description:: DIODE GEN PURP 100V 20A ITO220AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SFAF2002G from Taiwan Semiconductor is a 20 A, 100 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 20 A and 25 °C, and 3 °C/W junction-to-case thermal resistance - deployed in DC-DC converters and switching-mode inverters.

For engineers reviewing the SFAF2002G datasheet, SFAF2002G pinout, SFAF2002G application, or SFAF2002G equivalent, key selection criteria include verified V_RRM = 100 V, t_rr ≤ 35 ns, VF ≤ 0.975 V @ IF = 20 A, R_θJC = 3 °C/W, and AEC-Q101 qualification availability (SFAF2002GH variant).

Technical Context

This super fast rectifier uses a glass-passivated silicon junction to achieve low forward voltage and high surge current capability (I_FSM = 200 A, 8.3 ms half-sine). Its 35 ns reverse recovery time enables high-frequency switching operation up to ~3 MHz without excessive switching loss.

The ITO-220AC package provides direct metal heatsink mounting with 0.56 N·m max torque, UL 94V-0 molding compound, and matte tin-plated leads compliant with J-STD-002 solderability - supporting industrial and automotive-grade thermal and mechanical reliability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum non-repetitive reverse blocking voltage; defines usable input voltage range in flyback or boost topologies.
I_F	20 A - Continuous average forward current at case temperature ≤ 100 °C; sets conduction rating for power stage design.
t_rr	35 ns - Measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables efficient operation in 100–500 kHz SMPS designs.
V_F	0.975 V @ 20 A, 25 °C - Low conduction loss improves efficiency in high-current output rails.
R_θJC	3 °C/W - Enables thermal design with ≤ 30 W dissipation before reaching T_J = 150 °C at T_C = 120 °C.
C_J	170 pF @ 1 MHz, 4 V - Junction capacitance impacts EMI and snubber sizing in hard-switched converters.

Pinout & Package

ITO-220AC package: single-diode configuration with anode and cathode terminals on leads; case (tab) is electrically connected to cathode; designed for vertical mounting with heatsink contact via metal tab.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry	Connected to input/switching node side; polarity must match schematic symbol orientation.
Cathode (Lead 2)	Forward current exit / common reference	Electrically tied to metal tab; requires isolation washer if mounted to grounded heatsink.
Case / Tab	Cathode terminal extension	Provides primary thermal path; must be electrically isolated unless system design permits cathode grounding.

Key Features

Feature	Design Value
Glass passivated junction	Enables stable long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in harsh environments.
UL Recognized (E-326243)	Validates flammability (UL 94V-0), creepage, and construction compliance for end-equipment safety certification.
AEC-Q101 qualified option (SFAF2002GH)	Supports automotive power modules requiring stress-tested diodes for engine control, ADAS power supplies, and body electronics.
Low V_F + fast t_rr	Reduces combined conduction and switching losses - critical for >90% efficiency targets in compact 20 A DC-DC stages.

Applications

DC-DC Converter	Switching Inverter
Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Output rectifier handling continuous 20 A load with minimal conduction loss and fast commutation during synchronous gate drive transitions. Use Value: 0.975 V V_F reduces output-stage power loss by ~2.5 W vs. standard FRD alternatives at 20 A, improving thermal margin.	Use Scenario: Freewheeling path in 3-phase motor drive inverters operating at 20 kHz PWM frequency. IC Role / Device Role / Timing Role: Clamp inductive kickback during IGBT turn-off; recovers within 35 ns to prevent cross-conduction and shoot-through risk. Use Value: 35 ns t_rr ensures clean current commutation below 500 kHz effective switching, minimizing voltage overshoot and EMI.
Freewheeling Diode	Industrial Power Supply
Use Scenario: Inductor current续流 path in high-current buck regulators powering FPGA or ASIC core rails. IC Role / Device Role / Timing Role: Provides low-loss return path during high-side switch off-time; handles 200 A surge during startup or fault conditions. Use Value: 200 A I_FSM rating supports robust start-up into capacitive loads without degradation or failure.	Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V/48 V industrial PSUs with 10-year service life requirement. IC Role / Device Role / Timing Role: Main power conversion diode exposed to ambient temperatures up to 85 °C and thermal cycling over 10,000 cycles. Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure no field failures due to intermetallic growth or corrosion.

DC-DC Converter

Switching Inverter

Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Output rectifier handling continuous 20 A load with minimal conduction loss and fast commutation during synchronous gate drive transitions.

Use Value: 0.975 V V_F reduces output-stage power loss by ~2.5 W vs. standard FRD alternatives at 20 A, improving thermal margin.

Use Scenario: Freewheeling path in 3-phase motor drive inverters operating at 20 kHz PWM frequency.

IC Role / Device Role / Timing Role: Clamp inductive kickback during IGBT turn-off; recovers within 35 ns to prevent cross-conduction and shoot-through risk.

Use Value: 35 ns t_rr ensures clean current commutation below 500 kHz effective switching, minimizing voltage overshoot and EMI.

Freewheeling Diode

Industrial Power Supply

Use Scenario: Inductor current续流 path in high-current buck regulators powering FPGA or ASIC core rails.

IC Role / Device Role / Timing Role: Provides low-loss return path during high-side switch off-time; handles 200 A surge during startup or fault conditions.

Use Value: 200 A I_FSM rating supports robust start-up into capacitive loads without degradation or failure.

Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V/48 V industrial PSUs with 10-year service life requirement.

IC Role / Device Role / Timing Role: Main power conversion diode exposed to ambient temperatures up to 85 °C and thermal cycling over 10,000 cycles.

Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure no field failures due to intermetallic growth or corrosion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2002CT	TO-220AC package, dual common-cathode configuration; V_RRM = 100 V, t_rr = 35 ns, V_F = 1.05 V @ 20 A	Requires dual-diode layout; not single-die drop-in replacement	Select when dual-channel freewheeling or interleaved topology is used.
ON Semi MUR2020CT	TO-220AC, dual common-cathode; V_RRM = 200 V, t_rr = 35 ns, V_F = 1.15 V @ 20 A	Higher V_RRM increases voltage margin but raises cost and capacitance (C_J = 190 pF)	Choose only if system requires ≥200 V blocking or legacy design reuse.

Compared with STTH2002CT and MUR2020CT, the SFAF2002G offers single-diode simplicity, lower V_F, and optimized thermal resistance (3 °C/W) - making it preferable for space-constrained, thermally demanding 100 V rectification where discrete anode/cathode routing is required.

Availability

SFAF2002G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for SFAF2002G 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The SFAF series was developed specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion - emphasizing fast recovery, low V_F, and rugged packaging for mission-critical 20 A applications.

FAQ

What is the maximum junction temperature rating for SFAF2002G?

The SFAF2002G has a maximum junction temperature (T_J) of +150 °C, with operational storage temperature ranging from –55 °C to +150 °C. This rating allows use in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when properly heatsinked. Thermal design must maintain T_J ≤ 150 °C using the specified R_θJC = 3 °C/W and appropriate case-to-heatsink interface.

Is SFAF2002G RoHS and halogen-free compliant?

Yes, the SFAF2002G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the matte tin-plated leads satisfy J-STD-002 solderability requirements. These compliance attributes are confirmed in Taiwan Semiconductor's official documentation for the SFAF2002G family.

Does SFAF2002G have AEC-Q101 qualification?

The base SFAF2002G is not AEC-Q101 qualified; however, the variant SFAF2002GH is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive-grade stress testing including HTGB, HTRB, and temperature cycling. For automotive applications, specify SFAF2002GH - the SFAF2002G itself is intended for industrial and commercial use.

What is the reverse recovery time test condition for SFAF2002G?

The reverse recovery time (t_rr) of 35 ns for SFAF2002G is measured under the condition: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_rr = 0.25 A. This standardized test reflects real-world commutation behavior in high-frequency switching circuits and is validated per JEDEC JESD24-10.

How is polarity marked on the SFAF2002G package?

The SFAF2002G uses standard ITO-220AC marking: the cathode is indicated by a band or notch on the package body adjacent to lead 2 (cathode terminal), and the metal tab is internally connected to the cathode. Polarity must be verified visually before PCB placement - incorrect orientation causes immediate short-circuit failure when powered.

SFAF2002G C0G 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):: 100 V

Current - Average Rectified (Io):: 20A

Voltage - Forward (Vf) (Max) @ If:: 975 mV @ 20 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 100 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

SFAF2002G C0G FAQ

1.How can I place an order for SFAF2002G C0G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF2002G C0G 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 SFAF2002G C0G reliable?

The price and inventory of SFAF2002G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2002G C0G is usually 5 days.

3.What payment methods are accepted for SFAF2002G C0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2002G C0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF2002G C0G?

SFAF2002G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF2002G C0G 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 SFAF2002G C0G?

For technical support, including SFAF2002G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2002G C0G requirements.

6.How does Aetrix verify that SFAF2002G C0G is sourced from the original manufacturer or authorized distributors?

All SFAF2002G C0G 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 SFAF2002G C0G meets industry standards.

7.What is the process for return or replacement of SFAF2002G C0G?

All SFAF2002G C0G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2002G C0G, 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 SFAF2002G C0G part is unused and in its original packaging.

Return procedure for SFAF2002G C0G:

1.Submit a request within 90 days.

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

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