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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Taiwan Semiconductor Corporation SFS1003G

Name: SFS1003G
Brand: Taiwan Semiconductor Corporation
SKU: SFS1003G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFS1003G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Diode Arrays

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

Datasheet:: SFS1003G.pdf

Description:: DIODE ARRAY GP 150V 10A TO263AB

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Product details

Overview

SFS1003G from Taiwan Semiconductor is a 150 V, 10 A super fast recovery surface-mount rectifier in TO-263AB (D2PAK) package, featuring 35 ns reverse recovery time and 0.975 V forward voltage at 5 A/25°C, used in DC-DC converters and freewheeling paths for high-efficiency power supplies.

For engineers reviewing the SFS1003G datasheet, SFS1003G pinout, SFS1003G application, or SFS1003G equivalent, key selection criteria include peak reverse voltage (150 V), surge current rating (125 A), thermal resistance (2 °C/W), junction temperature range (–55 to +150 °C), and dual-die configuration for parallel conduction capability.

Technical Context

The SFS1003G integrates two identical silicon die in a single TO-263AB package, enabling dual-anode or dual-cathode configurations depending on PCB layout. Its super fast recovery (trr ≤ 35 ns) minimizes switching losses in high-frequency SMPS topologies operating up to several hundred kHz.

Thermally optimized with 2 °C/W junction-to-case resistance and rated for continuous 10 A forward current at TC = 110°C, it supports compact, convection-cooled designs. The device meets J-STD-020 Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling clamp circuits
I_F	10 A - Continuous average forward current at case temperature ≤110°C; determines heatsink sizing in power stage design
I_FSM	125 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients without failure
t_rr	35 ns - Reverse recovery time at I_F=0.5 A, I_R=1.0 A, I_rr=0.25 A; enables >200 kHz switching with low diode switching loss
V_F	0.975 V - Forward voltage per diode at I_F=5 A, T_J=25°C; directly impacts conduction loss and thermal budget
R_θJC	2 °C/W - Junction-to-case thermal resistance; allows precise thermal modeling when mounted to copper plane or heatsink
C_J	70 pF - Junction capacitance per diode at 1 MHz, V_R=4 V; influences EMI generation and snubber design in hard-switched converters

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, 3-terminal configuration with exposed cathode tab for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode 1)	Anode of first diode die	Provides independent anode connection for dual-diode operation or series/parallel configuration
Pin 2 (Anode 2)	Anode of second diode die	Enables dual-anode freewheeling or interleaved converter use without external paralleling
Tab (Cathode)	Common cathode for both dies	Large copper area serves as primary thermal path and low-inductance return node

Key Features

Feature	Design Value
Super fast recovery (t_rr ≤ 35 ns)	Reduces turn-off switching loss and EMI in high-frequency DC-DC converters above 100 kHz
Dual-die TO-263AB construction	Delivers 10 A total current with redundancy and lower effective thermal resistance vs. single-die alternatives
Low V_F = 0.975 V @ 5 A	Lowers conduction loss by ~15% compared to standard fast rectifiers, improving efficiency in 12–48 V output stages
J-STD-020 Level 1 moisture sensitivity	Eliminates bake requirement before reflow, supporting direct automated assembly in high-volume manufacturing
RoHS-compliant & halogen-free	Meets IPC-610 Class 2/3 environmental compliance for industrial and telecom power supply applications

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side synchronous rectification replacement in isolated 24 V/10 A buck-derived DC-DC modules. IC Role / Device Role / Timing Role: Power rectifier handling continuous 10 A output current with minimal conduction loss and fast reverse recovery. Use Value: 0.975 V V_F reduces average conduction loss by 1.2 W vs. 1.1 V alternatives, lowering thermal stress on PCB copper.	Use Scenario: Freewheeling path in 3-phase motor drive inverter leg with 150 V bus and 10 A peak load current. IC Role / Device Role / Timing Role: Clamp diode providing low-loss current recirculation during PWM dead-time intervals. Use Value: 35 ns t_rr prevents reverse recovery shoot-through, enabling reliable 20 kHz PWM operation without added snubbers.
High-Efficiency AC-DC Adapter Secondary	Industrial UPS Hold-Up Circuit
Use Scenario: Output rectification in 48 V/5 A universal-input offline adapter targeting >90% efficiency at full load. IC Role / Device Role / Timing Role: Fast recovery rectifier replacing Schottky diodes where higher V_RRM margin is required. Use Value: 150 V V_RRM provides 2× safety margin over 48 V nominal output, eliminating risk of avalanche failure during line surges.	Use Scenario: Energy recapture path in 48 V battery-backed UPS sustaining 10 A load during AC outage. IC Role / Device Role / Timing Role: Bidirectional energy transfer diode in boost/buck-hold topology during battery discharge phase. Use Value: Dual-die structure supports 10 A continuous current with <2 °C/W thermal resistance, maintaining T_J < 125°C without forced air.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side synchronous rectification replacement in isolated 24 V/10 A buck-derived DC-DC modules.

IC Role / Device Role / Timing Role: Power rectifier handling continuous 10 A output current with minimal conduction loss and fast reverse recovery.

Use Value: 0.975 V V_F reduces average conduction loss by 1.2 W vs. 1.1 V alternatives, lowering thermal stress on PCB copper.

Use Scenario: Freewheeling path in 3-phase motor drive inverter leg with 150 V bus and 10 A peak load current.

IC Role / Device Role / Timing Role: Clamp diode providing low-loss current recirculation during PWM dead-time intervals.

Use Value: 35 ns t_rr prevents reverse recovery shoot-through, enabling reliable 20 kHz PWM operation without added snubbers.

High-Efficiency AC-DC Adapter Secondary

Industrial UPS Hold-Up Circuit

Use Scenario: Output rectification in 48 V/5 A universal-input offline adapter targeting >90% efficiency at full load.

IC Role / Device Role / Timing Role: Fast recovery rectifier replacing Schottky diodes where higher V_RRM margin is required.

Use Value: 150 V V_RRM provides 2× safety margin over 48 V nominal output, eliminating risk of avalanche failure during line surges.

Use Scenario: Energy recapture path in 48 V battery-backed UPS sustaining 10 A load during AC outage.

IC Role / Device Role / Timing Role: Bidirectional energy transfer diode in boost/buck-hold topology during battery discharge phase.

Use Value: Dual-die structure supports 10 A continuous current with <2 °C/W thermal resistance, maintaining T_J < 125°C without forced air.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH10L06S	600 V V_RRM, 10 A, 35 ns t_rr, TO-220AC package, V_F = 1.15 V @ 5 A	Higher voltage rating but higher V_F and larger footprint; requires heatsink mounting	Preferred only when >150 V blocking or through-hole assembly is mandatory
ON Semi MUR1020CT	200 V V_RRM, 10 A dual common-cathode, TO-220AB, t_rr = 35 ns, V_F = 1.05 V @ 5 A	Same speed but higher V_F and through-hole package; no D2PAK thermal advantage	Consider if legacy TO-220 layout exists and thermal margin permits higher V_F

Compared with STTH10L06S and MUR1020CT, the SFS1003G offers optimal balance of 150 V rating, 0.975 V forward drop, and D2PAK thermal performance-enabling smaller heatsinks and higher power density in space-constrained SMPS designs.

Availability

SFS1003G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, RoHS/halogen-free compliance, and high surge robustness.

Supply support for SFS1003G 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 global industrial, computing, and consumer markets since 1979.

The SFS1003G belongs to TSC's Super Fast Surface Mount Rectifier family, engineered specifically for high-frequency, high-efficiency power conversion where low V_F, fast t_rr, and robust surge capability are critical.

FAQ

What is the maximum junction temperature rating for the SFS1003G?

The SFS1003G has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C. This wide operating range allows reliable deployment in industrial environments with ambient temperatures up to +85°C when properly heatsinked. Derating curves confirm 10 A continuous current is sustainable at case temperatures up to 110°C, making the SFS1003G suitable for thermally constrained power supply designs.

Does the SFS1003G have a dual-diode configuration, and how are the terminals arranged?

Yes, the SFS1003G contains two identical silicon rectifier dies in a single TO-263AB (D2PAK) package. Pin 1 and Pin 2 serve as independent anodes, while the exposed metal tab functions as the common cathode for both dies. This arrangement supports flexible circuit topologies including dual-output rectification, interleaved freewheeling, or redundant conduction paths without external paralleling components.

What is the reverse recovery time (t_rr) specification for the SFS1003G, and under what test conditions is it measured?

The SFS1003G has a maximum reverse recovery time (t_rr) of 35 ns, measured under the conditions: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_rr = 0.25 A. This value is confirmed across the full temperature range and ensures minimal switching loss and EMI in high-frequency power converters operating up to 300 kHz, distinguishing it from standard fast recovery diodes with t_rr > 50 ns.

Is the SFS1003G compatible with lead-free reflow soldering processes?

Yes, the SFS1003G is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its moisture sensitivity level is rated J-STD-020 Level 1-meaning it can be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking. This simplifies high-volume SMT assembly and eliminates pre-reflow moisture mitigation steps.

How does the thermal performance of the SFS1003G compare to standard TO-220 rectifiers with similar current ratings?

The SFS1003G achieves a junction-to-case thermal resistance (R_θJC) of 2 °C/W, significantly better than typical TO-220 rectifiers (≈3–4 °C/W), due to its large copper D2PAK tab and optimized internal die attach. When mounted to a 1-in² 2-oz copper pad, the SFS1003G maintains T_J < 125°C at 10 A continuous current-enabling smaller heatsinks or fanless operation where TO-220 alternatives would require active cooling.

SFS1003G 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

Diode Configuration:: 1 Pair Common Cathode

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io) (per Diode):: 10A

Voltage - Forward (Vf) (Max) @ If:: 975 mV @ 5 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 150 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263AB (D2PAK)

SFS1003G FAQ

1.How can I place an order for SFS1003G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFS1003G 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 SFS1003G reliable?

The price and inventory of SFS1003G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFS1003G is usually 5 days.

3.What payment methods are accepted for SFS1003G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFS1003G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFS1003G?

SFS1003G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFS1003G 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 SFS1003G?

For technical support, including SFS1003G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFS1003G requirements.

6.How does Aetrix verify that SFS1003G is sourced from the original manufacturer or authorized distributors?

All SFS1003G 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 SFS1003G meets industry standards.

7.What is the process for return or replacement of SFS1003G?

All SFS1003G units undergo pre-shipment inspection (PSI). If there is an issue with SFS1003G, 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 SFS1003G part is unused and in its original packaging.

Return procedure for SFS1003G:

1.Submit a request within 90 days.

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

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