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

Taiwan Semiconductor Corporation SF2L6GH

Name: SF2L6GH
Brand: Taiwan Semiconductor Corporation
SKU: SF2L6GH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF2L6GH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SF2L6GH.pdf

Description:: DIODE GEN PURP 400V 2A DO204AC

Quantity:: RFQ Add To RFQ list

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Inventory:3,250

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Product details

Overview

SF2L6GH from Taiwan Semiconductor is a 2 A, 400 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 35 ns reverse recovery time, 1.30 V max forward voltage at 2 A and 25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.

For engineers reviewing the SF2L6GH datasheet, SF2L6GH pinout, SF2L6GH application, or SF2L6GH equivalent, key selection criteria include its 400 V repetitive peak reverse voltage, 50 A surge capability, AEC-Q101 qualification status, thermal resistance (R_θJL = 17 °C/W), and DO-15 mechanical compatibility with legacy through-hole layouts.

Technical Context

This super fast rectifier uses a glass-passivated silicon junction to achieve low forward voltage and rapid charge removal during reverse recovery. Its 35 ns trr enables operation in DC-DC converters and SMPS designs switching above 100 kHz without excessive switching loss.

The device operates across -55°C to +150°C junction temperature range, supports 2 A continuous forward current with derating above 75°C, and delivers stable reverse leakage (<1 µA at 25°C, <100 µA at 125°C) under rated VR, ensuring predictable behavior in thermally demanding environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost converter output stages
I_F	2 A - Continuous average forward current; determines heatsink requirements and PCB trace sizing
t_rr	35 ns - Reverse recovery time; enables efficient high-frequency rectification with minimal switching loss
V_F (max)	1.30 V @ 2 A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal design
I_FSM	50 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush and transient overload tolerance
R_θJL	17 °C/W - Junction-to-lead thermal resistance; enables direct lead soldering heat path estimation
Junction Temp	-55°C to +150°C - Operating range compatible with under-hood automotive and industrial ambient conditions

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, glass-passivated silicon die, cathode indicated by band. Leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap)
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to output rail or filter capacitor positive; blocks reverse voltage up to 400 V

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control units and ADAS power modules
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or condensing environments
Low V_F and t_rr	Reduces both conduction and switching losses simultaneously-critical for >100 kHz SMPS efficiency
RoHS & halogen-free	Complies with IEC 61249-2-21; suitable for consumer, industrial, and automotive end-equipment compliance
DO-204AC (DO-15) package	Enables drop-in replacement of legacy rectifiers (e.g., 1N400x, UF400x) with improved speed and thermal performance

Applications

DC–DC Converter Output Rectification	Automotive Engine Control Unit (ECU) Power Supply
Use Scenario: High-efficiency 12 V → 3.3 V/5 V buck converter supplying microcontroller and sensor rails. IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch on-time; handles 2 A continuous load with minimal voltage drop. Use Value: 1.30 V V_F and 35 ns t_rr reduce power loss and EMI generation compared to standard recovery diodes.	Use Scenario: 12 V battery-fed power supply in engine bay with ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Freewheeling diode across relay coil or MOSFET body diode in high-side driver stage. Use Value: AEC-Q101 qualification and -55°C to +150°C rating ensure functional safety and lifetime reliability under thermal cycling stress.
Switch-Mode Inverter Auxiliary Supply	Industrial PLC Power Input Stage
Use Scenario: Isolated auxiliary supply derived from main inverter DC bus (e.g., 400 V DC link). IC Role / Device Role / Timing Role: Primary rectifier in flyback transformer secondary winding, blocking 400 V reverse voltage. Use Value: 400 V V_RRM and 50 A I_FSM withstand voltage transients and startup surges without failure.	Use Scenario: AC/DC front-end rectification feeding bulk capacitor in programmable logic controller power module. IC Role / Device Role / Timing Role: Fast recovery rectifier replacing slower 1N540x series to improve efficiency and reduce heat sink size. Use Value: DO-15 footprint compatibility allows retrofit into existing PCBs while delivering 35 ns t_rr and 17 °C/W R_θJL.

DC–DC Converter Output Rectification

Automotive Engine Control Unit (ECU) Power Supply

Use Scenario: High-efficiency 12 V → 3.3 V/5 V buck converter supplying microcontroller and sensor rails.

IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch on-time; handles 2 A continuous load with minimal voltage drop.

Use Value: 1.30 V V_F and 35 ns t_rr reduce power loss and EMI generation compared to standard recovery diodes.

Use Scenario: 12 V battery-fed power supply in engine bay with ambient temperatures up to 125°C.

IC Role / Device Role / Timing Role: Freewheeling diode across relay coil or MOSFET body diode in high-side driver stage.

Use Value: AEC-Q101 qualification and -55°C to +150°C rating ensure functional safety and lifetime reliability under thermal cycling stress.

Switch-Mode Inverter Auxiliary Supply

Industrial PLC Power Input Stage

Use Scenario: Isolated auxiliary supply derived from main inverter DC bus (e.g., 400 V DC link).

IC Role / Device Role / Timing Role: Primary rectifier in flyback transformer secondary winding, blocking 400 V reverse voltage.

Use Value: 400 V V_RRM and 50 A I_FSM withstand voltage transients and startup surges without failure.

Use Scenario: AC/DC front-end rectification feeding bulk capacitor in programmable logic controller power module.

IC Role / Device Role / Timing Role: Fast recovery rectifier replacing slower 1N540x series to improve efficiency and reduce heat sink size.

Use Value: DO-15 footprint compatibility allows retrofit into existing PCBs while delivering 35 ns t_rr and 17 °C/W R_θJL.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R04	Same 2 A / 400 V rating; 30 ns t_rr, 1.35 V V_F; TO-220AC package (not DO-15)	Requires PCB layout change; suited for higher-power forced-air-cooled systems	Select when higher surge margin or surface-mount thermal interface is needed
ON Semi MUR240	2 A / 400 V; 35 ns t_rr, 1.25 V V_F; DO-15 package, but not AEC-Q101 qualified	Lacks automotive qualification; acceptable for industrial/commercial use only	Select when AEC-Q101 is not required and lower V_F is prioritized

Compared with STTH2R04 and MUR240, SF2L6GH uniquely combines DO-15 through-hole compatibility, AEC-Q101 qualification, and balanced V_F/t_rr performance-making it optimal for space-constrained, automotive-grade power supplies where board-level reliability and legacy footprint retention are critical.

Availability

SF2L6GH is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and DC–DC converter designs requiring stable component supply, AEC-Q101 compliance, and DO-15 footprint continuity.

Supply support for SF2L6GH 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.

The SF2L6GH belongs to TSC's SF2LxG super fast rectifier family, engineered specifically for high-frequency switching power conversion in automotive and industrial environments where reliability, thermal robustness, and fast recovery are essential.

FAQ

What is the peak repetitive reverse voltage rating for SF2L6GH?

The SF2L6GH has a peak repetitive reverse voltage (V_RRM) rating of 400 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2105). It defines the maximum reverse-biased voltage the device can block continuously without breakdown, making SF2L6GH suitable for 400 V DC bus applications such as automotive 48 V systems or industrial SMPS outputs.

Is SF2L6GH qualified to AEC-Q101 standards?

Yes, SF2L6GH is explicitly AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification includes stress testing for temperature cycling, humidity bias, and mechanical shock-ensuring SF2L6GH meets automotive-grade reliability requirements for under-hood and safety-critical power supply applications.

What is the forward voltage drop of SF2L6GH at rated current?

The SF2L6GH exhibits a maximum forward voltage (V_F) of 1.30 V at 2 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss-critical for thermal design and efficiency calculations in high-duty-cycle power converters using SF2L6GH.

Does SF2L6GH have the same package as standard DO-15 rectifiers?

Yes, SF2L6GH uses the DO-204AC (DO-15) package with axial leads and cathode band marking, matching mechanical dimensions and lead spacing of legacy DO-15 rectifiers like 1N4007 or UF4007. The datasheet confirms identical case outline, polarity indication, and lead plating (pure tin), enabling direct physical replacement without PCB modification when upgrading to faster recovery performance.

What is the reverse recovery time specification for SF2L6GH?

The SF2L6GH has a maximum reverse recovery time (t_rr) of 35 ns, tested at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This parameter is listed in the Electrical Specifications table and enables high-frequency operation (>100 kHz) with reduced switching loss and EMI-key for modern compact DC–DC converters where SF2L6GH serves as the primary output rectifier.

SF2L6GH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 2 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 400 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

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

SF2L6GH FAQ

1.How can I place an order for SF2L6GH through Aetrix?

Please submit a Request for Quotation (RFQ) for SF2L6GH 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 SF2L6GH reliable?

The price and inventory of SF2L6GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF2L6GH is usually 5 days.

3.What payment methods are accepted for SF2L6GH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF2L6GH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF2L6GH?

SF2L6GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF2L6GH 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 SF2L6GH?

For technical support, including SF2L6GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF2L6GH requirements.

6.How does Aetrix verify that SF2L6GH is sourced from the original manufacturer or authorized distributors?

All SF2L6GH 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 SF2L6GH meets industry standards.

7.What is the process for return or replacement of SF2L6GH?

All SF2L6GH units undergo pre-shipment inspection (PSI). If there is an issue with SF2L6GH, 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 SF2L6GH part is unused and in its original packaging.

Return procedure for SF2L6GH:

1.Submit a request within 90 days.

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

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