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

Taiwan Semiconductor Corporation SF65G

Name: SF65G
Brand: Taiwan Semiconductor Corporation
SKU: SF65G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF65G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SF65G.pdf

Description:: DIODE GEN PURP 300V 6A DO201AD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SF65G from Taiwan Semiconductor is a 400V, 6A super fast recovery rectifier diode in DO-201AD package, featuring 35ns reverse recovery time, 1.300V forward voltage at 6A/25°C, and 150A surge capability - deployed in high-frequency DC-DC converters and switching inverters requiring low conduction loss and fast commutation.

For engineers reviewing the SF65G datasheet, SF65G pinout, SF65G application, or SF65G equivalent, key selection criteria include V_RRM = 400V, I_F = 6A, t_rr = 35ns, V_F = 1.300V (6A, 25°C), and thermal resistance R_θJL = 5°C/W - critical for thermal design in compact power stages.

Technical Context

The SF65G employs a single-die silicon PN junction optimized for super-fast recovery (t_rr ≤ 35ns), enabling efficient operation in 50–500 kHz switching topologies. Its 400V V_RRM rating and 150A I_FSM support robust handling of transient overcurrents in flyback and forward converters.

Thermally, the DO-201AD package delivers R_θJL = 5°C/W and R_θJA = 40°C/W, allowing sustained 6A average current with moderate heatsinking. Junction capacitance is 50pF at 4V, minimizing capacitive switching losses in high-dv/dt environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for circuit blocking voltage in SMPS output stages.
I_F	6 A - Continuous average forward current at T_A = 75°C; defines steady-state power delivery capacity.
t_rr	35 ns - Reverse recovery time under IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables high-frequency switching with minimal turn-off loss.
V_F	1.300 V @ 6A, 25°C - Forward voltage drop; directly determines conduction loss (P_cond ≈ 7.8W at full load).
C_J	50 pF @ 1MHz, 4V - Junction capacitance; impacts EMI generation and snubber sizing in hard-switched converters.
R_θJL	5 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper or heatsink via lead frame.

Pinout & Package

DO-201AD package: axial-leaded, molded plastic case with cathode band marking; leads are pure tin-plated, J-STD-002 solderable; polarity indicated by cathode band; weight ≈ 1.20g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connected to lower-potential node (e.g., switch node in freewheeling path); must handle 6A continuous and 150A surge.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to higher-potential rail (e.g., output capacitor positive); withstands 400V reverse bias and controls recovery behavior.

Key Features

Feature	Design Value
Super-fast recovery (t_rr ≤ 35ns)	Reduces turn-off switching loss and EMI in 100–500 kHz converters, improving efficiency over standard fast rectifiers.
Low forward voltage (1.300 V @ 6A)	Lowers conduction loss by ~15% vs. comparable 400V rectifiers with V_F > 1.45V, extending thermal margin in space-constrained designs.
High surge rating (I_FSM = 150A)	Withstands inrush and fault currents without degradation, supporting reliable operation in unregulated input or overload conditions.
DO-201AD with R_θJL = 5°C/W	Enables direct thermal transfer from die to PCB copper or external heatsink via leads, simplifying thermal management vs. SMD alternatives.

Applications

DC-DC Converter Output Rectification	Switching Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 12V/48V output flyback or forward converters operating at 200–300 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 35ns t_rr minimizes reverse recovery charge (Q_rr), reducing switching loss and heat generation at 250 kHz.	Use Scenario: Freewheeling path across IGBTs/MOSFETs in 3-phase motor inverters or UPS systems. IC Role / Device Role / Timing Role: Provides low-loss current recirculation during active device off-time, clamping inductive kickback. Use Value: 400V V_RRM and 150A I_FSM ensure safe operation under 600V bus transients and motor stall surges.
AC-DC Adapter Secondary Side	Industrial SMPS Input Bridge Snubber
Use Scenario: Output rectification in compact 65W–150W offline adapters with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency power conversion element delivering stable DC output while maintaining low no-load loss. Use Value: 1.300V V_F reduces conduction loss by ~0.9W vs. legacy 400V rectifiers, improving full-load efficiency by 0.4–0.6%.	Use Scenario: Snubber diode in RCD clamp networks for PFC boost or LLC resonant converter primary switches. IC Role / Device Role / Timing Role: Fast-turn-on path for clamp capacitor discharge, limiting dv/dt stress on main switch. Use Value: 50pF C_J and 35ns t_rr enable precise timing control of clamp energy transfer without oscillation.

DC-DC Converter Output Rectification

Switching Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 12V/48V output flyback or forward converters operating at 200–300 kHz.

IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 35ns t_rr minimizes reverse recovery charge (Q_rr), reducing switching loss and heat generation at 250 kHz.

Use Scenario: Freewheeling path across IGBTs/MOSFETs in 3-phase motor inverters or UPS systems.

IC Role / Device Role / Timing Role: Provides low-loss current recirculation during active device off-time, clamping inductive kickback.

Use Value: 400V V_RRM and 150A I_FSM ensure safe operation under 600V bus transients and motor stall surges.

AC-DC Adapter Secondary Side

Industrial SMPS Input Bridge Snubber

Use Scenario: Output rectification in compact 65W–150W offline adapters with tight thermal constraints.

IC Role / Device Role / Timing Role: High-efficiency power conversion element delivering stable DC output while maintaining low no-load loss.

Use Value: 1.300V V_F reduces conduction loss by ~0.9W vs. legacy 400V rectifiers, improving full-load efficiency by 0.4–0.6%.

Use Scenario: Snubber diode in RCD clamp networks for PFC boost or LLC resonant converter primary switches.

IC Role / Device Role / Timing Role: Fast-turn-on path for clamp capacitor discharge, limiting dv/dt stress on main switch.

Use Value: 50pF C_J and 35ns t_rr enable precise timing control of clamp energy transfer without oscillation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH6L04	V_RRM = 400V, I_F = 6A, t_rr = 35ns, V_F = 1.35V @ 6A - slightly higher V_F, same DO-201AD package	Identical mounting and thermal interface; marginally higher conduction loss at full load	Preferred where STMicroelectronics supply chain alignment is required; verify layout compatibility with identical footprint.
ES6D	V_RRM = 400V, I_F = 6A, t_rr = 35ns, V_F = 1.25V @ 6A - lower V_F, same DO-201AD package	Same mechanical fit; offers 50mV lower forward drop, improving light-load efficiency	Consider when optimizing for minimum conduction loss; confirm RoHS/halogen-free compliance matches SF65G requirements.

Compared with STTH6L04 and ES6D, the SF65G provides identical 400V/6A/35ns performance with a balanced V_F of 1.300V - making it a thermally robust choice for industrial SMPS where consistent surge tolerance and JEDEC-compliant lead finish are prioritized.

Availability

SF65G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, AEC-Q101-grade reliability (when ordered as SF65GH), and long-term industrial lifecycle support.

Supply support for SF65G 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 devices, and MOSFETs for industrial and automotive markets.

The SF65G belongs to TSC's SF6xG super fast rectifier family, engineered specifically for high-frequency switching power supplies where low V_F, fast t_rr, and rugged surge capability are essential for efficiency and reliability.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SF65G?

The SF65G has a V_RRM of 400 V, confirmed in the Absolute Maximum Ratings table for the SF65G row. This value defines the highest reverse voltage the device can block repeatedly without breakdown and is validated under standard test conditions per JESD22-A114.

What is the forward voltage (V_F) of SF65G at rated current and temperature?

The SF65G exhibits a maximum forward voltage of 1.300 V at 6 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This parameter is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects.

Is SF65G qualified to AEC-Q101 standards?

The base SF65G part is not AEC-Q101 qualified; however, the variant SF65GH - explicitly marked with "H" in the ordering code - is AEC-Q101 qualified. This distinction is defined in the Ordering Information section, where "H" denotes qualification status.

What package type does SF65G use, and what are its key mechanical properties?

SF65G uses the DO-201AD package: axial-leaded, UL 94V-0 molded compound, pure tin-plated leads compliant with J-STD-002, and cathode polarity marked by a band. Its weight is approximately 1.20 g, and it meets JESD201 Class 2 whisker resistance.

What is the reverse recovery time (t_rr) specification for SF65G, and under what test conditions?

The SF65G has a maximum reverse recovery time of 35 ns, measured under the conditions IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as stated in the Electrical Specifications table. This value reflects performance at room temperature and is critical for high-frequency switching efficiency.

SF65G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 300 V

Current - Average Rectified (Io):: 6A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 6 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 300 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SF65G FAQ

1.How can I place an order for SF65G through Aetrix?

Please submit a Request for Quotation (RFQ) for SF65G 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 SF65G reliable?

The price and inventory of SF65G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF65G is usually 5 days.

3.What payment methods are accepted for SF65G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF65G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF65G?

SF65G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF65G 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 SF65G?

For technical support, including SF65G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF65G requirements.

6.How does Aetrix verify that SF65G is sourced from the original manufacturer or authorized distributors?

All SF65G 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 SF65G meets industry standards.

7.What is the process for return or replacement of SF65G?

All SF65G units undergo pre-shipment inspection (PSI). If there is an issue with SF65G, 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 SF65G part is unused and in its original packaging.

Return procedure for SF65G:

1.Submit a request within 90 days.

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

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