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

Taiwan Semiconductor Corporation SFA1002G

Name: SFA1002G
Brand: Taiwan Semiconductor Corporation
SKU: SFA1002G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFA1002G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: SFA1002G.pdf

Description:: 35NS, 10A, 100V, SUPER FAST RECO

Quantity:: RFQ Add To RFQ list

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Inventory:6,426

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Product details

Overview

SFA1002G from Taiwan Semiconductor is a 10A, 100V super fast rectifier diode in TO-220AC package, featuring 35ns reverse recovery time, 0.975V forward voltage at 10A/25°C, and 125A surge capability-used in high-frequency switching mode power supplies for freewheeling and output rectification.

For engineers reviewing the SFA1002G datasheet, SFA1002G pinout, SFA1002G application, or SFA1002G equivalent, key selection criteria include V_RRM=100V, I_F=10A, t_rr=35ns, R_θJC=3.5°C/W, and AEC-Q101 qualification availability (SFA1002GH variant), critical for automotive DC-DC and industrial SMPS design.

Technical Context

The SFA1002G employs a single-die planar junction structure optimized for fast recovery and low conduction loss. Its 35ns t_rr enables operation in 100–500 kHz switching converters, while the 0.975V V_F at rated current reduces thermal stress under continuous 10A DC load.

Thermally, the TO-220AC package delivers 3.5°C/W junction-to-case resistance, supporting reliable operation up to 150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for industrial mounting environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 100V-rated DC-DC outputs.
I_F	10 A - Continuous forward current rating; supports sustained 10A output rectification without derating at T_C ≤ 85°C.
t_rr	35 ns - Reverse recovery time; enables efficient operation in high-frequency SMPS (>200 kHz) with minimal switching loss.
V_F	0.975 V @ 10A, 25°C - Low forward voltage drop; reduces conduction loss to ~9.75W at full load, easing thermal management.
R_θJC	3.5 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting to maintain T_J ≤ 150°C at 10A.
I_FSM	125 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and fault transients in power supply startup.

Pinout & Package

Package: TO-220AC - 3-lead, single-ended vertical mount package with isolated tab (cathode-connected case), matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input current entry point	Connected to switching node or transformer secondary; carries full forward current into device.
Cathode (Lead 2)	Output current exit point	Connected to output rail or ground return; electrically tied to metal tab for thermal path and EMI shielding.
Case / Tab	Cathode terminal & thermal interface	Internally bonded to cathode; must be electrically isolated from heatsink unless circuit design requires cathode grounding.

Key Features

Feature	Design Value
Super fast recovery (t_rr = 35 ns)	Enables high-frequency operation with low switching loss in 200–500 kHz SMPS designs.
Low V_F (0.975 V @ 10A)	Reduces conduction loss by ~15% vs. standard FRDs, lowering heatsink requirements in compact converters.
Single-die TO-220AC construction	Ensures consistent thermal and electrical performance; avoids mismatch issues found in dual-die parallel configurations.
AEC-Q101 qualification option (SFA1002GH)	Validates reliability for automotive under-hood applications including engine control DC-DC modules.

Applications

DC-DC Converter Output Rectification	Switching Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 48V-to-12V buck-derived DC-DC converters for telecom and server power. IC Role / Device Role / Timing Role: Power diode conducting during synchronous rectifier off-time; handles 10A continuous forward current with minimal voltage drop. Use Value: 0.975V V_F limits conduction loss to 9.75W, enabling smaller heatsinks and higher power density than standard FRDs.	Use Scenario: Freewheeling path in 3-phase IGBT-based motor inverters for HVAC compressors and industrial drives. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during IGBT turn-off; recovers in 35ns to minimize tail current and switching loss. Use Value: 35ns t_rr reduces turn-off energy loss in IGBTs by up to 22% compared to 75ns FRDs at 10kHz switching.
Automotive On-Board Charger (OBC) Auxiliary Supply	Industrial SMPS Input Bridge Snubber
Use Scenario: Isolated auxiliary 12V supply in AEC-Q101-compliant OBC systems powering gate drivers and MCU peripherals. IC Role / Device Role / Timing Role: Output rectifier in flyback converter; operates continuously at 10A with ambient up to 105°C. Use Value: 150°C T_JMAX and 3.5°C/W R_θJC ensure stable operation without forced air cooling in sealed enclosures.	Use Scenario: Snubber diode across primary-side MOSFETs in 1–3kW industrial SMPS with active clamp topology. IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off; conducts brief high-di/dt current pulses. Use Value: 125A I_FSM withstands repetitive 100A+ snubber surges; 35ns t_rr prevents snap-off oscillation in high-dV/dt environments.

DC-DC Converter Output Rectification

Switching Inverter Freewheeling

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

IC Role / Device Role / Timing Role: Power diode conducting during synchronous rectifier off-time; handles 10A continuous forward current with minimal voltage drop.

Use Value: 0.975V V_F limits conduction loss to 9.75W, enabling smaller heatsinks and higher power density than standard FRDs.

Use Scenario: Freewheeling path in 3-phase IGBT-based motor inverters for HVAC compressors and industrial drives.

IC Role / Device Role / Timing Role: Provides low-loss recirculation path during IGBT turn-off; recovers in 35ns to minimize tail current and switching loss.

Use Value: 35ns t_rr reduces turn-off energy loss in IGBTs by up to 22% compared to 75ns FRDs at 10kHz switching.

Automotive On-Board Charger (OBC) Auxiliary Supply

Industrial SMPS Input Bridge Snubber

Use Scenario: Isolated auxiliary 12V supply in AEC-Q101-compliant OBC systems powering gate drivers and MCU peripherals.

IC Role / Device Role / Timing Role: Output rectifier in flyback converter; operates continuously at 10A with ambient up to 105°C.

Use Value: 150°C T_JMAX and 3.5°C/W R_θJC ensure stable operation without forced air cooling in sealed enclosures.

Use Scenario: Snubber diode across primary-side MOSFETs in 1–3kW industrial SMPS with active clamp topology.

IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off; conducts brief high-di/dt current pulses.

Use Value: 125A I_FSM withstands repetitive 100A+ snubber surges; 35ns t_rr prevents snap-off oscillation in high-dV/dt 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
STTH10R06DJF	V_RRM=600V, t_rr=30ns, V_F=1.7V @ 10A - higher voltage rating but 75% higher forward loss.	Preferred in 400–600V PFC stages; less suitable for 100V output rectification due to excessive V_F.	Select when V_RRM > 400V is required and thermal budget allows higher conduction loss.
ON Semiconductor MUR10100CT	Dual common-cathode configuration, V_RRM=100V, t_rr=60ns, V_F=1.2V - slower recovery and higher V_F than SFA1002G.	Used in cost-sensitive dual-output supplies; not recommended where <40ns t_rr is critical for efficiency.	Choose only if dual-diode integration is needed and 60ns t_rr meets system EMI/loss targets.

Compared with STTH10R06DJF and MUR10100CT, the SFA1002G offers optimal balance of 100V rating, 35ns recovery, and 0.975V V_F, making it superior for high-efficiency, thermally constrained 10A output rectification in 100–200 kHz SMPS.

Availability

SFA1002G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive auxiliary power supplies requiring stable component supply, long-term manufacturability, and RoHS/halogen-free compliance.

Supply support for SFA1002G 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 SFA1002G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-frequency switching power conversion where low V_F, fast t_rr, and robust surge capability are essential for efficiency and reliability.

FAQ

What is the maximum junction temperature rating for the SFA1002G?

The SFA1002G has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating applies under continuous operation with proper heatsinking and ensures long-term reliability when case temperature remains ≤125°C. Derating curves confirm 10A operation is sustainable up to 85°C case temperature. The SFA1002G must not exceed this thermal limit to avoid parametric shift or premature failure.

Is the SFA1002G pin-compatible with other TO-220AC rectifiers like the 1N5408?

No, the SFA1002G is not pin-compatible with legacy rectifiers such as the 1N5408. While both use TO-220AC packaging, the SFA1002G features a cathode-connected tab and anode/cathode lead assignment optimized for high-frequency layout, whereas the 1N5408 uses a different internal die orientation and thermal path. PCB footprint compatibility does not imply functional or thermal equivalence-the SFA1002G requires verification of tab isolation and thermal interface design before substitution.

Does the SFA1002G meet AEC-Q101 reliability standards?

The base SFA1002G is not AEC-Q101 qualified; however, the variant SFA1002GH is fully AEC-Q101 qualified per Rev K2103 documentation. This qualification includes stress testing for temperature cycling, humidity bias, and mechanical shock-specifically validated for under-hood automotive applications. Engineers requiring automotive-grade assurance must specify SFA1002GH, not SFA1002G, in their BOM.

What is the typical reverse recovery time (t_rr) of the SFA1002G and how is it measured?

The SFA1002G has a typical reverse recovery time (t_rr) of 35 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, I_RR = 0.25 A, and T_A = 25°C per the official datasheet. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss in high-frequency converters. The 35 ns t_rr is confirmed across production lots and is stable up to 100°C junction temperature.

How does the forward voltage (V_F) of the SFA1002G compare to standard fast recovery diodes?

The SFA1002G exhibits a typical V_F of 0.975 V at 10 A and 25°C-approximately 15–20% lower than standard fast recovery diodes like the UF1007 (V_F ≈ 1.15 V) or MUR10100 (V_F ≈ 1.2 V) under identical conditions. This lower V_F directly reduces conduction loss and junction heating, improving overall converter efficiency and thermal margin. The SFA1002G achieves this via optimized doping and junction geometry, not process scaling alone.

SFA1002G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 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 @ 100 V

Capacitance @ Vr, F:: 70pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

SFA1002G FAQ

1.How can I place an order for SFA1002G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFA1002G 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 SFA1002G reliable?

The price and inventory of SFA1002G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFA1002G is usually 5 days.

3.What payment methods are accepted for SFA1002G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFA1002G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFA1002G?

SFA1002G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFA1002G 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 SFA1002G?

For technical support, including SFA1002G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFA1002G requirements.

6.How does Aetrix verify that SFA1002G is sourced from the original manufacturer or authorized distributors?

All SFA1002G 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 SFA1002G meets industry standards.

7.What is the process for return or replacement of SFA1002G?

All SFA1002G units undergo pre-shipment inspection (PSI). If there is an issue with SFA1002G, 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 SFA1002G part is unused and in its original packaging.

Return procedure for SFA1002G:

1.Submit a request within 90 days.

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

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