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

Taiwan Semiconductor Corporation SF36G-A

Name: SF36G-A
Brand: Taiwan Semiconductor Corporation
SKU: SF36G-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF36G-A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SF36G-A.pdf

Description:: 35NS, 3A, 400V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:4,756

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Product details

Overview

SF36G-A from Taiwan Semiconductor is a 400V, 3A super fast recovery rectifier diode in DO-201AD package, featuring 35ns reverse recovery time, 1.30V forward voltage at 3A/25°C, and 125A surge capability - deployed in high-frequency switching mode power supplies for efficient freewheeling and output rectification.

For engineers reviewing the SF36G-A datasheet, SF36G-A pinout, SF36G-A application, or SF36G-A equivalent, key selection criteria include V_RRM = 400V, I_F = 3A, t_rr = 35ns, thermal resistance R_θJL = 10°C/W, and DO-201AD mechanical compatibility with automated through-hole assembly.

Technical Context

This single-die silicon rectifier uses optimized epitaxial structure to achieve super-fast recovery (t_rr ≤ 35ns) while maintaining low forward voltage (V_F = 1.30V @ 3A, 25°C) and high junction temperature rating (T_J = –55°C to +150°C). Its 400V repetitive peak reverse voltage (V_RRM) supports mid-range SMPS output stages.

Thermal performance is defined by R_θJL = 10°C/W and R_θJA = 35°C/W, enabling reliable operation under continuous 3A DC load with standard PCB copper area. Junction capacitance is 60pF at 4V reverse bias, minimizing high-frequency switching losses.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse voltage the device blocks in circuit without breakdown
I_F	3 A - Continuous average forward current rating at case temperature ≤ 75°C
t_rr	35 ns - Reverse recovery time measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A; enables >100 kHz switching
V_F	1.30 V @ 3A, 25°C - Forward voltage drop determining conduction loss in rectifier path
I_FSM	125 A - Peak non-repetitive surge current (8.3ms half-sine) supporting inrush and fault transients
C_J	60 pF @ 1MHz, 4V - Junction capacitance affecting high-frequency switching noise and EMI
R_θJL	10 °C/W - Thermal resistance from junction to lead, critical for heatsink-less mounting on PCB copper

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 1A whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of rectifier bridge or freewheeling path
Cathode	Forward current exit / reverse blocking terminal	Marked by band; connects to output rail or switch node; carries full load current during conduction

Key Features

Feature	Design Value
Super-fast recovery	t_rr = 35 ns enables high-frequency (>100 kHz) SMPS designs with reduced switching loss
Low forward voltage	V_F = 1.30 V @ 3A minimizes conduction loss and improves efficiency in 12–48V output stages
High surge robustness	I_FSM = 125 A withstands startup surges and short-circuit transients without failure
Halogen-free & RoHS	Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing
UL 94V-0 molding	Flame-retardant encapsulant meets safety standards for enclosed power supply applications

Applications

DC–DC Converters	Switching Mode Inverters
Use Scenario: Secondary-side synchronous or diode rectification in isolated 12V/24V/48V DC–DC modules for telecom and industrial systems. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 35ns t_rr reduces reverse recovery loss, improving efficiency by ~0.8% over standard fast rectifiers at 200 kHz.	Use Scenario: Output stage rectification in 1–3 kW solar microinverters and UPS inverters. IC Role / Device Role / Timing Role: Freewheeling and output rectifier handling bidirectional energy flow during PWM commutation. Use Value: 400V V_RRM and 125A I_FSM support 350V DC bus with margin for line transients and overvoltage events.
Freewheeling Diodes	AC–DC Adapters
Use Scenario: Inductive load protection in motor drivers, solenoid controllers, and relay interface circuits. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance path for stored inductor energy during switch-off. Use Value: Low V_F (1.30 V) limits clamp voltage overshoot and reduces heat generation during repeated flyback cycles.	Use Scenario: Output rectification in compact 5–30W wall adapters and open-frame AC–DC power supplies. IC Role / Device Role / Timing Role: Primary rectifier delivering DC bus to PWM controller IC and secondary-side regulation circuitry. Use Value: DO-201AD package allows automated axial insertion and reflow-compatible lead finish for cost-effective mass production.

DC–DC Converters

Switching Mode Inverters

Use Scenario: Secondary-side synchronous or diode rectification in isolated 12V/24V/48V DC–DC modules for telecom and industrial systems.

IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 35ns t_rr reduces reverse recovery loss, improving efficiency by ~0.8% over standard fast rectifiers at 200 kHz.

Use Scenario: Output stage rectification in 1–3 kW solar microinverters and UPS inverters.

IC Role / Device Role / Timing Role: Freewheeling and output rectifier handling bidirectional energy flow during PWM commutation.

Use Value: 400V V_RRM and 125A I_FSM support 350V DC bus with margin for line transients and overvoltage events.

Freewheeling Diodes

AC–DC Adapters

Use Scenario: Inductive load protection in motor drivers, solenoid controllers, and relay interface circuits.

IC Role / Device Role / Timing Role: Clamp diode providing low-impedance path for stored inductor energy during switch-off.

Use Value: Low V_F (1.30 V) limits clamp voltage overshoot and reduces heat generation during repeated flyback cycles.

Use Scenario: Output rectification in compact 5–30W wall adapters and open-frame AC–DC power supplies.

IC Role / Device Role / Timing Role: Primary rectifier delivering DC bus to PWM controller IC and secondary-side regulation circuitry.

Use Value: DO-201AD package allows automated axial insertion and reflow-compatible lead finish for cost-effective mass production.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L04	V_RRM = 400V, t_rr = 30ns, V_F = 1.25V @ 3A - slightly faster and lower V_F, but DO-201AD footprint identical	Same 400V/3A class; preferred where <30ns t_rr is required for >300 kHz designs	Select STTH3L04 when optimizing for minimal reverse recovery loss at higher frequencies
ES3D	V_RRM = 200V, t_rr = 35ns, V_F = 0.95V @ 3A - lower voltage rating, lower V_F, same package	Not suitable for 400V bus applications; limited to ≤200V output stages	Choose ES3D only for 12–24V DC–DC outputs where lower V_F outweighs voltage margin needs

Compared with STTH3L04 and ES3D, SF36G-A provides optimal balance of 400V blocking, 35ns recovery, and thermal robustness in DO-201AD - making it ideal for cost-sensitive 100–200 kHz industrial SMPS where voltage margin and surge tolerance are prioritized over marginal t_rr reduction.

Availability

SF36G-A is available at Aetrix Electronics and suitable for DC–DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance across production lots, and long-term manufacturability assurance.

Supply support for SF36G-A 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 power electronics and industrial markets since 1979.

The SF3xG-A series was designed specifically for high-efficiency, high-reliability switching power supplies - emphasizing fast recovery, thermal stability, and compliance with environmental and safety standards for industrial-grade deployment.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of SF36G-A?

The SF36G-A has a V_RRM of 400 V, confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version B2105). This rating defines the highest reverse voltage the device can block repeatedly without avalanche breakdown under normal operating conditions, and is strictly assigned to the SF36G-A variant within the SF31G–SF38G family.

What is the forward voltage (V_F) specification for SF36G-A at rated current?

SF36G-A exhibits a typical forward voltage of 1.30 V at 3 A and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects conduction loss behavior in continuous-duty rectifier applications.

Does SF36G-A have a halogen-free and RoHS-compliant construction?

Yes, SF36G-A is both RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC datasheet. The molding compound, plating, and internal materials meet these environmental requirements without derating or performance trade-offs.

What is the reverse recovery time (t_rr) of SF36G-A, and how is it tested?

SF36G-A has a maximum reverse recovery time of 35 ns, measured under standardized conditions: I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This test method is documented in the Electrical Specifications section and ensures consistent comparison across super fast rectifier devices.

Which package type does SF36G-A use, and what are its mechanical identifiers?

SF36G-A uses the DO-201AD axial-leaded package, identified by its 5.2 mm body diameter, 2.7 mm lead diameter, and cathode band marking. Mechanical data confirms UL 94V-0 flammability rating, pure tin-plated leads compliant with J-STD-002, and JESD201 Class 1A whisker resistance.

SF36G-A 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):: 400 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 3 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SF36G-A FAQ

1.How can I place an order for SF36G-A through Aetrix?

Please submit a Request for Quotation (RFQ) for SF36G-A 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 SF36G-A reliable?

The price and inventory of SF36G-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF36G-A is usually 5 days.

3.What payment methods are accepted for SF36G-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF36G-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF36G-A?

SF36G-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF36G-A 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 SF36G-A?

For technical support, including SF36G-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF36G-A requirements.

6.How does Aetrix verify that SF36G-A is sourced from the original manufacturer or authorized distributors?

All SF36G-A 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 SF36G-A meets industry standards.

7.What is the process for return or replacement of SF36G-A?

All SF36G-A units undergo pre-shipment inspection (PSI). If there is an issue with SF36G-A, 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 SF36G-A part is unused and in its original packaging.

Return procedure for SF36G-A:

1.Submit a request within 90 days.

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

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