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

Taiwan Semiconductor Corporation SFAF1606G

Name: SFAF1606G
Brand: Taiwan Semiconductor Corporation
SKU: SFAF1606G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF1606G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF1606G.pdf

Description:: DIODE GEN PURP 400V 16A ITO220AC

Quantity:: RFQ Add To RFQ list

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Inventory:1,000

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Product details

Overview

SFAF1606G from Taiwan Semiconductor is a 16A, 400V repetitive peak reverse voltage super fast rectifier diode in ITO-220AC package, featuring 1.300V max forward voltage at 16A/25°C, 35ns reverse recovery time, and AEC-Q101 qualification option (SFAF1606GH). It serves as a primary output rectifier in high-frequency DC-DC converters.

For engineers reviewing the SFAF1606G datasheet, SFAF1606G pinout, SFAF1606G application, or SFAF1606G equivalent, key selection criteria include its 400V V_RRM, low 1.300V V_F at rated current, 200A I_FSM surge capability, thermal resistance of 1.3°C/W, and compatibility with automotive-grade reliability requirements.

Technical Context

The SFAF1606G employs a glass-passivated single-die silicon junction optimized for switching-mode power supplies. Its 35ns trr enables operation up to several hundred kHz while maintaining low switching losses, and its 1.3°C/W R_θJC supports direct heatsink mounting without thermal interface material in moderate-power designs.

With 400V V_RRM and 100pF junction capacitance at 4V reverse bias, the device balances voltage margin and high-frequency performance. The 16A average forward current rating is derated linearly above 25°C case temperature per the published derating curve, and it meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in flyback or forward converters
I_F	16 A - Continuous average forward current at T_C = 25°C; requires heatsinking above ambient case temperatures
V_F @ 16A	≤1.300 V - Forward voltage drop determines conduction loss and thermal load in high-duty-cycle applications
t_rr	≤35 ns - Reverse recovery time limits minimum switching period and reduces turn-off switching loss
R_θJC	1.3 °C/W - Junction-to-case thermal resistance; enables direct bolt-down heatsink mounting for thermal management
I_FSM	200 A - Non-repetitive surge current rating; withstands inrush and fault transients without failure
C_J @ 4V	100 pF - Junction capacitance affects high-frequency noise coupling and snubber design in SMPS

Pinout & Package

Package: ITO-220AC - Insulated TO-220 variant with electrically isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to lower-potential side of circuit; polarity marked on device body
Cathode (Lead 2)	Forward current exit point	Connected to higher-potential side; electrically tied to isolated metal tab
Tab (Case)	Electrically isolated thermal path	Provides mechanical mounting and heat transfer without electrical connection to either terminal

Key Features

Feature	Design Value
Glass passivated junction	Enables stable long-term operation under humidity and thermal cycling; eliminates need for conformal coating in industrial environments
AEC-Q101 qualified version available	SFAF1606GH meets stress test requirements for automotive under-hood applications including temperature cycling and HTRB
Low 1.300V V_F at 16A	Reduces conduction loss by ~15% vs. standard fast rectifiers, lowering thermal design burden in compact power supplies
100pF C_J at 4V	Minimizes capacitive coupling noise in high dv/dt switching nodes, easing EMI filter design
UL Recognized (E-326243)	Validates safety compliance for end-equipment certification in North America without additional component-level testing

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Primary secondary-side rectification in isolated 48V–380V output DC-DC converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 35ns t_rr and 1.300V V_F minimize combined conduction and switching losses, improving efficiency by ≥1.2% over standard fast diodes at 200 kHz.	Use Scenario: Freewheeling path for inductive loads in motor drive inverters and UPS systems with 400V DC bus. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET/IGBT off-time to prevent voltage spikes. Use Value: 200A I_FSM withstands motor startup surges; 400V V_RRM provides 20% margin over 325V RMS bus voltage.
Automotive On-Board Charger (OBC)	Industrial AC-DC Front-End Rectification
Use Scenario: Output rectification stage in bidirectional OBC modules compliant with ISO 15118 and SAE J1772. IC Role / Device Role / Timing Role: High-reliability rectifier in 6.6 kW dual-phase PFC + LLC stages where AEC-Q101 qualification is mandatory. Use Value: AEC-Q101 qualified SFAF1606GH variant ensures qualification for automotive temperature cycling (-40°C to +150°C) and HTRB life testing.	Use Scenario: Input bridge or output rectifier in industrial 3-phase AC-DC power supplies with 400V line-to-line input. IC Role / Device Role / Timing Role: Handles continuous 16A conduction with minimal thermal rise due to 1.3°C/W R_θJC and isolated tab mounting. Use Value: ITO-220AC package allows direct heatsink attachment without insulating pads, reducing thermal resistance by up to 0.8°C/W vs. standard TO-220.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Primary secondary-side rectification in isolated 48V–380V output DC-DC converters operating at 100–500 kHz.

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

Use Value: 35ns t_rr and 1.300V V_F minimize combined conduction and switching losses, improving efficiency by ≥1.2% over standard fast diodes at 200 kHz.

Use Scenario: Freewheeling path for inductive loads in motor drive inverters and UPS systems with 400V DC bus.

IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET/IGBT off-time to prevent voltage spikes.

Use Value: 200A I_FSM withstands motor startup surges; 400V V_RRM provides 20% margin over 325V RMS bus voltage.

Automotive On-Board Charger (OBC)

Industrial AC-DC Front-End Rectification

Use Scenario: Output rectification stage in bidirectional OBC modules compliant with ISO 15118 and SAE J1772.

IC Role / Device Role / Timing Role: High-reliability rectifier in 6.6 kW dual-phase PFC + LLC stages where AEC-Q101 qualification is mandatory.

Use Value: AEC-Q101 qualified SFAF1606GH variant ensures qualification for automotive temperature cycling (-40°C to +150°C) and HTRB life testing.

Use Scenario: Input bridge or output rectifier in industrial 3-phase AC-DC power supplies with 400V line-to-line input.

IC Role / Device Role / Timing Role: Handles continuous 16A conduction with minimal thermal rise due to 1.3°C/W R_θJC and isolated tab mounting.

Use Value: ITO-220AC package allows direct heatsink attachment without insulating pads, reducing thermal resistance by up to 0.8°C/W vs. standard TO-220.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1604TV	400V V_RRM, 1.25V V_F @ 16A, 30ns t_rr, TO-220AC package, no AEC-Q101 option	Lower V_F and faster t_rr, but lacks automotive qualification and has higher junction capacitance (120pF)	Preferred for non-automotive high-efficiency SMPS where lowest conduction loss is critical
IXYS MUR1640CT	400V V_RRM, 1.3V V_F @ 16A, 60ns t_rr, TO-220AB dual common-cathode, AEC-Q101 not offered	Slower recovery increases switching loss at >150 kHz; dual configuration adds layout flexibility but no automotive support	Used when dual-diode topology is required and frequency <100 kHz; not suitable for AEC-Q101 designs

Compared with STTH1604TV and IXYS MUR1640CT, the SFAF1606G offers balanced trade-offs: slightly higher V_F than STTH1604TV but AEC-Q101 availability, and significantly faster t_rr than MUR1640CT-making it optimal for automotive and high-frequency industrial converters requiring reliability and speed.

Availability

SFAF1606G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and automotive on-board charger (OBC) applications requiring stable component supply across production lifecycles.

Supply support for SFAF1606G 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 industrial, computing, and automotive markets since 1979.

The SFAF1606G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in switching-mode power supplies and automotive-grade systems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the SFAF1606G?

The SFAF1606G has a V_RRM of 400 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2105). This rating defines the highest reverse voltage the device can block repeatedly without breakdown and is fixed for this specific part number-distinct from other members of the SFAF160xG series such as SFAF1605G (300V) or SFAF1607G (500V).

Is the SFAF1606G pin-compatible with standard TO-220AC rectifiers?

Yes, the SFAF1606G uses the ITO-220AC package, which shares identical mechanical footprint and lead spacing with TO-220AC. However, its metal tab is electrically isolated, unlike standard TO-220AC devices where the tab connects to the cathode. Therefore, while PCB layout is compatible, thermal mounting must account for isolation-no dielectric pad is needed, but circuit grounding must avoid shorting the tab.

Does the SFAF1606G have AEC-Q101 qualification?

The base SFAF1606G is not AEC-Q101 qualified, but the variant SFAF1606GH is explicitly listed as AEC-Q101 qualified in the Ordering Information section of the datasheet. The "H" suffix denotes full qualification per AEC-Q101 stress test requirements, including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing.

What is the typical forward voltage (V_F) of the SFAF1606G at 16A and 25°C?

The SFAF1606G has a maximum forward voltage of 1.300 V at I_F = 16 A and T_J = 25°C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the worst-case conduction loss for thermal design-actual typical V_F is lower but not guaranteed in production.

How does the junction-to-case thermal resistance (R_θJC) of the SFAF1606G impact heatsink selection?

The SFAF1606G has an R_θJC of 1.3°C/W, meaning each watt of power dissipated raises the junction temperature 1.3°C above the case temperature. For example, at 16A and 1.3V V_F, conduction loss is ~20.8W-requiring a heatsink that maintains case temperature ≤75°C to keep T_J ≤150°C. This low R_θJC enables compact heatsinks without thermal interface materials due to the isolated tab design.

SFAF1606G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2 Full Pack

Packaging:: Tube

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 16A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 16 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: 100pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AC

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

SFAF1606G FAQ

1.How can I place an order for SFAF1606G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF1606G 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 SFAF1606G reliable?

The price and inventory of SFAF1606G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF1606G is usually 5 days.

3.What payment methods are accepted for SFAF1606G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF1606G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF1606G?

SFAF1606G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF1606G 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 SFAF1606G?

For technical support, including SFAF1606G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF1606G requirements.

6.How does Aetrix verify that SFAF1606G is sourced from the original manufacturer or authorized distributors?

All SFAF1606G 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 SFAF1606G meets industry standards.

7.What is the process for return or replacement of SFAF1606G?

All SFAF1606G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF1606G, 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 SFAF1606G part is unused and in its original packaging.

Return procedure for SFAF1606G:

1.Submit a request within 90 days.

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

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