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

Taiwan Semiconductor Corporation SFS1606G

Name: SFS1606G
Brand: Taiwan Semiconductor Corporation
SKU: SFS1606G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFS1606G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: SFS1606G.pdf

Description:: DIODE GEN PURP 400V 16A TO263AB

Quantity:: RFQ Add To RFQ list

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Inventory:1,600

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Product details

Overview

SFS1606G from Taiwan Semiconductor is a 16A, 400V repetitive peak reverse voltage super fast surface-mount rectifier in TO-263AB (D2PAK) package, featuring 1.300V forward voltage at 8A/25°C, 35ns reverse recovery time, and dual-die construction for high-current DC/DC converters and switching inverters.

For engineers reviewing the SFS1606G datasheet, SFS1606G pinout, SFS1606G application, or SFS1606G equivalent, key selection criteria include its 400V V_RRM, 125A I_FSM, junction-to-case thermal resistance of 2.5°C/W, moisture sensitivity level 1 compliance, and suitability for freewheeling and high-frequency switching topologies requiring low recovery loss.

Technical Context

The SFS1606G is a single-phase, dual-die super fast recovery rectifier optimized for high-efficiency power conversion above 20kHz. Its 35ns trr and 60pF junction capacitance per diode support reduced switching losses in synchronous and quasi-resonant converters.

Thermally, it delivers 16A continuous forward current with 2.5°C/W R_θJC, enabling direct heatsink mounting via the exposed cathode tab in TO-263AB. The device operates across -55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse blocking voltage; defines usable input voltage headroom in boost/buck stages
I_F	16 A - Continuous average forward current at case temperature ≤75°C; sets conduction rating for PCB trace sizing
I_FSM	125 A - Peak surge current (8.3ms half-sine); determines robustness against line transients and startup inrush
V_F	1.300 V @ 8A, 25°C - Forward drop per diode; directly impacts conduction loss and thermal design margin
t_rr	35 ns - Reverse recovery time; enables operation up to ~500kHz without excessive switching loss or EMI
R_θJC	2.5 °C/W - Junction-to-case thermal resistance; allows accurate heatsink selection when mounted to copper plane or external heatsink

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, with exposed cathode tab for thermal and electrical connection. Matte tin-plated leads, RoHS and halogen-free compliant.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1	Input terminal for first diode	Connects to switching node in center-tapped or dual-output configurations
Anode 2	Input terminal for second diode	Enables independent control or parallel operation of dual dies
Cathode (Tab)	Common output / thermal path	Electrically and thermally ties both diodes; must be soldered to large copper area or heatsink

Key Features

Feature	Design Value
Super fast recovery (35ns)	Reduces reverse recovery charge (Q_rr) and associated switching loss in high-frequency SMPS
Dual-die configuration	Supports interleaved or redundant rectification paths without external paralleling components
Low V_F (1.300V @ 8A)	Lowers conduction loss by ~15% vs. standard fast rectifiers at same current, improving efficiency >92% in 48V outputs
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines
TO-263AB thermal performance	2.5°C/W R_θJC enables 16A operation with ≤35°C case rise over ambient using 2-in² 2oz copper pad

Applications

DC/DC Converters	Switching Inverters
Use Scenario: Secondary-side synchronous rectification in isolated 48V–54V telecom and server PSUs. IC Role / Device Role / Timing Role: High-speed unidirectional current switch replacing MOSFETs in flyback and forward converters. Use Value: Eliminates gate drive complexity while maintaining <35ns turn-off timing critical for ZVS/ZCS transitions.	Use Scenario: Output stage rectification in 3kW solar microinverters operating at 40–100kHz. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode in H-bridge and full-bridge topologies. Use Value: 400V V_RRM and 125A I_FSM withstand PV string transients and grid-swing reversals without avalanche stress.
Freewheeling Diodes	Industrial Motor Drives
Use Scenario: Inductive load snubbing in 16A solenoid and relay driver modules. IC Role / Device Role / Timing Role: Clamp diode providing low-loss return path during coil de-energization. Use Value: 1.300V V_F limits clamp energy dissipation to <10.4mJ per cycle at 8A, reducing thermal stress on PCB.	Use Scenario: Regenerative braking path in 3-phase 400V AC drives with IGBT-based inverters. IC Role / Device Role / Timing Role: Bidirectional energy return diode in DC-link chopper circuits. Use Value: Dual-die layout allows separate anode routing to minimize parasitic inductance in high-di/dt regen pulses.

DC/DC Converters

Switching Inverters

Use Scenario: Secondary-side synchronous rectification in isolated 48V–54V telecom and server PSUs.

IC Role / Device Role / Timing Role: High-speed unidirectional current switch replacing MOSFETs in flyback and forward converters.

Use Value: Eliminates gate drive complexity while maintaining <35ns turn-off timing critical for ZVS/ZCS transitions.

Use Scenario: Output stage rectification in 3kW solar microinverters operating at 40–100kHz.

IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode in H-bridge and full-bridge topologies.

Use Value: 400V V_RRM and 125A I_FSM withstand PV string transients and grid-swing reversals without avalanche stress.

Freewheeling Diodes

Industrial Motor Drives

Use Scenario: Inductive load snubbing in 16A solenoid and relay driver modules.

IC Role / Device Role / Timing Role: Clamp diode providing low-loss return path during coil de-energization.

Use Value: 1.300V V_F limits clamp energy dissipation to <10.4mJ per cycle at 8A, reducing thermal stress on PCB.

Use Scenario: Regenerative braking path in 3-phase 400V AC drives with IGBT-based inverters.

IC Role / Device Role / Timing Role: Bidirectional energy return diode in DC-link chopper circuits.

Use Value: Dual-die layout allows separate anode routing to minimize parasitic inductance in high-di/dt regen pulses.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1604D	400V V_RRM, 35ns t_rr, but 1.55V V_F @ 8A - +19% conduction loss vs. SFS1606G	Higher thermal footprint required; less suitable for compact 1U PSU designs	Preferred where ST ecosystem integration or AEC-Q101 qualification is mandatory
IXYS MUR1640CT	400V V_RRM, 60ns t_rr, TO-220AC package - slower recovery and no exposed thermal tab	Requires external heatsink; not suitable for high-density SMT layouts	Used where through-hole mounting and legacy footprint compatibility are prioritized

Compared with STTH1604D and IXYS MUR1640CT, the SFS1606G offers superior thermal efficiency via TO-263AB's low R_θJC and lower V_F, making it optimal for space-constrained, high-frequency industrial and telecom power supplies where board-level thermal management is critical.

Availability

SFS1606G is available at Aetrix Electronics and suitable for DC/DC converters, switching inverters, and freewheeling applications requiring stable component supply, high surge robustness, and consistent thermal performance across production volumes.

Supply support for SFS1606G 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 markets since 1979.

The SFS1606G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where low recovery loss and reliable thermal performance are essential.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the SFS1606G?

The SFS1606G has a maximum repetitive peak reverse voltage (V_RRM) of 400 V, as confirmed in the Absolute Maximum Ratings table for the SFS1606G variant. This rating defines the highest reverse voltage the device can block continuously without breakdown under normal operating conditions and is validated per JEDEC test methods.

Does the SFS1606G have a dual-die configuration, and how does it affect circuit layout?

Yes, the SFS1606G uses a dual-die configuration housed in a single TO-263AB package. This allows independent anode connections for each die, supporting interleaved rectification or redundancy without external paralleling. Layout must isolate Anode 1 and Anode 2 traces while sharing the common cathode tab to avoid coupling and ensure balanced current sharing.

What is the forward voltage (V_F) of the SFS1606G at rated current and temperature?

The SFS1606G exhibits a maximum forward voltage (V_F) of 1.300 V at 8 A and junction temperature of 25°C, per the Electrical Specifications table. At higher temperatures (e.g., 125°C), V_F decreases slightly due to semiconductor physics, but system design should use the 25°C max value for worst-case loss calculation.

Is the SFS1606G suitable for lead-free reflow soldering, and what is its moisture sensitivity level?

Yes, the SFS1606G is qualified for lead-free reflow soldering and carries a moisture sensitivity level (MSL) of 1 per J-STD-020. This means it can be stored indefinitely at ≤30°C/60% RH and requires no baking before SMT assembly, simplifying manufacturing flow and reducing risk of popcorning during reflow.

How does the thermal performance of the SFS1606G compare to standard TO-220 rectifiers?

The SFS1606G achieves a junction-to-case thermal resistance (R_θJC) of 2.5°C/W, significantly better than typical TO-220 rectifiers (~3.5–5.0°C/W), due to its TO-263AB package with large exposed cathode tab. This enables higher current density in compact layouts and reduces reliance on external heatsinks in medium-power applications.

SFS1606G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

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 @ 8 A

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

Reverse Recovery Time (trr):: 35 ns

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263AB (D2PAK)

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

SFS1606G FAQ

1.How can I place an order for SFS1606G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFS1606G 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 SFS1606G reliable?

The price and inventory of SFS1606G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFS1606G is usually 5 days.

3.What payment methods are accepted for SFS1606G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFS1606G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFS1606G?

SFS1606G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFS1606G 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 SFS1606G?

For technical support, including SFS1606G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFS1606G requirements.

6.How does Aetrix verify that SFS1606G is sourced from the original manufacturer or authorized distributors?

All SFS1606G 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 SFS1606G meets industry standards.

7.What is the process for return or replacement of SFS1606G?

All SFS1606G units undergo pre-shipment inspection (PSI). If there is an issue with SFS1606G, 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 SFS1606G part is unused and in its original packaging.

Return procedure for SFS1606G:

1.Submit a request within 90 days.

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

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