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

Taiwan Semiconductor Corporation S2MFL

Name: S2MFL
Brand: Taiwan Semiconductor Corporation
SKU: S2MFL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2MFL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123F

Datasheet:: S2MFL.pdf

Description:: 2A, 1000V, STANDARD RECOVERY REC

Quantity:: RFQ Add To RFQ list

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Inventory:8,893

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Product details

Overview

S2MFL from Taiwan Semiconductor is a 2 A, 1000 V standard surface-mount silicon rectifier diode in SOD-123FL package, featuring glass passivated junction, low reverse leakage (≤5 µA at 25°C), and 40 A surge rating (8.3 ms). It serves as the high-voltage member of the S2xFL family for DC–DC converters and switching inverters.

For engineers reviewing the S2MFL datasheet, S2MFL pinout, S2MFL application, or S2MFL equivalent, key selection criteria include peak reverse voltage (1000 V), forward voltage (1.10 V max @ 2 A, 25°C), thermal resistance (R_θJA = 116 °C/W), junction temperature range (−55 to +150 °C), and SOD-123FL mechanical compatibility.

Technical Context

The S2MFL is a single-die, unidirectional standard recovery rectifier with cathode-band polarity marking. Its glass-passivated junction ensures stable reverse characteristics across −55°C to +150°C operating range and supports automated placement per J-STD-002 solderability requirements.

Thermal performance is characterized on a 5 mm × 5 mm copper pad PCB: R_θJL = 81 °C/W and R_θJC = 69 °C/W confirm efficient heat conduction from junction to lead and case, enabling reliable operation at full 2 A DC current under ambient conditions up to 75°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Maximum repetitive reverse voltage; defines maximum DC blocking capability in high-voltage power rails.
I_F	2 A - Continuous forward current rating; determines steady-state power handling without derating below 75°C ambient.
I_FSM (8.3 ms)	40 A - Non-repetitive surge current; supports inrush and transient overload tolerance in SMPS startup and fault events.
V_F (2 A, 25°C)	1.10 V max - Forward voltage drop; directly impacts conduction loss (2.2 W max at 2 A) and thermal design margin.
R_θJA	116 °C/W - Junction-to-ambient thermal resistance on standard test board; used to calculate max allowable ambient temperature at full load.
I_R (25°C)	5 µA max - Reverse leakage current; critical for low-power standby efficiency and high-impedance bias networks.

Pinout & Package

Package: SOD-123FL - Surface-mount plastic package with matte tin-plated leads, UL 94V-0 molding compound, and cathode band polarity indicator. Weight: 0.016 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; must withstand 2 A continuous and 40 A surge.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; carries full reverse voltage (up to 1000 V) and defines polarity-sensitive PCB layout.

Key Features

Feature	Design Value
Glass passivated junction	Enables stable reverse leakage (<5 µA @ 25°C) and long-term reliability under humidity and thermal cycling.
Moisture sensitivity level 1	Eliminates bake requirement before reflow; compatible with standard SMT assembly lines without floor-life constraints.
J-STD-002 solderable leads	Guarantees robust wetting and intermetallic formation during lead-free reflow (260°C peak), reducing voiding risk.
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; supports environmentally regulated industrial and consumer end equipment.

Applications

DC–DC Converter	Switching Inverter
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V output from 300–800 V bus. IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current path with minimal conduction loss and predictable reverse recovery. Use Value: 1000 V V_RRM safely handles reflected voltage spikes; 1.10 V V_F limits power loss to ≤2.2 W at 2 A output current.	Use Scenario: DC link freewheeling and output rectification in motor drive inverters and solar microinverters. IC Role / Device Role / Timing Role: High-voltage freewheeling diode clamping inductive kickback and enabling bidirectional energy transfer in half-bridge legs. Use Value: 40 A I_FSM withstands short-circuit transients; 150°C T_JMAX supports operation in thermally constrained heatsinkless designs.
Industrial Power Supply	LED Driver
Use Scenario: Input bridge rectification or hold-up capacitor charging in 24/48 V industrial PSUs with wide AC input range. IC Role / Device Role / Timing Role: Primary-side rectifier handling line-frequency AC input with high peak inverse voltage margin. Use Value: 1000 V rating provides >2× safety margin over 400 VAC RMS input (565 V peak); low IR ensures minimal standby power loss.	Use Scenario: Constant-current regulation loop rectification in offline LED drivers with passive PFC stages. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to DC for LED string biasing. Use Value: SOD-123FL footprint enables compact layout; 2 A rating supports up to 20 W LED loads with margin for thermal derating.

DC–DC Converter

Switching Inverter

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V output from 300–800 V bus.

IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current path with minimal conduction loss and predictable reverse recovery.

Use Value: 1000 V V_RRM safely handles reflected voltage spikes; 1.10 V V_F limits power loss to ≤2.2 W at 2 A output current.

Use Scenario: DC link freewheeling and output rectification in motor drive inverters and solar microinverters.

IC Role / Device Role / Timing Role: High-voltage freewheeling diode clamping inductive kickback and enabling bidirectional energy transfer in half-bridge legs.

Use Value: 40 A I_FSM withstands short-circuit transients; 150°C T_JMAX supports operation in thermally constrained heatsinkless designs.

Industrial Power Supply

LED Driver

Use Scenario: Input bridge rectification or hold-up capacitor charging in 24/48 V industrial PSUs with wide AC input range.

IC Role / Device Role / Timing Role: Primary-side rectifier handling line-frequency AC input with high peak inverse voltage margin.

Use Value: 1000 V rating provides >2× safety margin over 400 VAC RMS input (565 V peak); low IR ensures minimal standby power loss.

Use Scenario: Constant-current regulation loop rectification in offline LED drivers with passive PFC stages.

IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to DC for LED string biasing.

Use Value: SOD-123FL footprint enables compact layout; 2 A rating supports up to 20 W LED loads with margin for thermal derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	600 V V_RRM, TO-220AC package, higher V_F (1.3 V typ @ 2 A)	Requires heatsink above ~1.2 A; unsuitable for SOD-123FL footprint-constrained boards	Select when higher surge rating (60 A) and through-hole mounting are acceptable trade-offs for lower cost.
ES2D	200 V V_RRM, same SOD-123FL package, identical pinout and footprint	Limited to <300 V DC bus applications; not safe for 1000 V systems	Choose only for low-voltage designs where 200 V rating suffices and space constraints mandate SOD-123FL.

Compared with STTH2R06 and ES2D, the S2MFL uniquely delivers 1000 V blocking in a miniature SOD-123FL package with industry-standard solderability and moisture resilience-enabling high-density, high-voltage rectification without layout or thermal redesign.

Availability

S2MFL is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for S2MFL 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 consumer markets since 1979.

The S2xFL series was developed to provide standardized, high-reliability surface-mount rectifiers with extended voltage grading (200–1000 V), optimized for automated manufacturing and thermally demanding power conversion topologies.

FAQ

What is the maximum repetitive peak reverse voltage rating for S2MFL?

The S2MFL has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2103, Page 1). It defines the highest DC or peak AC voltage the device can block continuously without breakdown, making S2MFL suitable for high-voltage DC bus and offline power applications where ≥1000 V standoff is required.

Does S2MFL have a specified forward voltage at 2 A and 125°C?

Yes, the S2MFL datasheet specifies a maximum forward voltage (V_F) of 1.00 V at 2 A forward current and 125°C junction temperature. This value appears in the Electrical Specifications table (Page 2) under "IF = 2A, TJ = 125°C" condition. The lower V_F at elevated temperature reflects improved carrier injection efficiency and confirms stable conduction behavior across the full operating range of the S2MFL.

Is S2MFL compliant with RoHS and halogen-free standards?

Yes, S2MFL is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the FEATURES section (Page 1) of the official Taiwan Semiconductor datasheet. The device uses lead-free matte tin plating and halogen-free molding compound, satisfying environmental requirements for industrial, automotive, and consumer electronics where regulatory conformity is mandatory for market access.

What is the thermal resistance from junction to ambient (R_θJA) for S2MFL?

The junction-to-ambient thermal resistance (R_θJA) for S2MFL is 116 °C/W, measured on a standard 5 mm × 5 mm copper pad PCB per JEDEC test conditions. This value is listed in the THERMAL PERFORMANCE table (Page 2) and is essential for calculating maximum allowable ambient temperature at rated current. It reflects the S2MFL's ability to dissipate heat in typical SMT layouts without additional heatsinking.

Can S2MFL be used as a direct replacement for S2DFL or S2KFL in the same PCB layout?

No-S2MFL shares the same SOD-123FL package and pinout as S2DFL and S2KFL, but it is not a functional drop-in replacement due to its distinct 1000 V V_RRM rating. While footprint and polarity are identical, substituting S2MFL into a design originally using S2DFL (200 V) may over-specify voltage margin unnecessarily, increasing cost and potentially altering thermal or capacitive behavior. Always verify system-level voltage stress and derating requirements before interchange.

S2MFL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-123F

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1000 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 2 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 5 µA @ 1000 V

Capacitance @ Vr, F:: 10pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123F

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

S2MFL FAQ

1.How can I place an order for S2MFL through Aetrix?

Please submit a Request for Quotation (RFQ) for S2MFL 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 S2MFL reliable?

The price and inventory of S2MFL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2MFL is usually 5 days.

3.What payment methods are accepted for S2MFL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2MFL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2MFL?

S2MFL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2MFL 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 S2MFL?

For technical support, including S2MFL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2MFL requirements.

6.How does Aetrix verify that S2MFL is sourced from the original manufacturer or authorized distributors?

All S2MFL 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 S2MFL meets industry standards.

7.What is the process for return or replacement of S2MFL?

All S2MFL units undergo pre-shipment inspection (PSI). If there is an issue with S2MFL, 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 S2MFL part is unused and in its original packaging.

Return procedure for S2MFL:

1.Submit a request within 90 days.

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

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