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

Taiwan Semiconductor Corporation SF806G C0G

Name: SF806G C0G
Brand: Taiwan Semiconductor Corporation
SKU: SF806G C0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF806G C0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-3

Datasheet:: SF806G C0G.pdf

Description:: DIODE GEN PURP 400V 8A TO220AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SF806G from Taiwan Semiconductor is an 8A, 400V repetitive peak reverse voltage (V_RRM) super fast rectifier diode in TO-220AB package, featuring 1.300 V forward voltage at 4A/25°C, 35 ns reverse recovery time, and dual-die configuration for high-current freewheeling in DC-DC converters.

For engineers reviewing the SF806G datasheet, SF806G pinout, SF806G application, or SF806G equivalent, key selection criteria include V_RRM = 400 V, I_F = 8 A, t_rr = 35 ns, R_θJC = 3 °C/W, and AEC-Q101 qualification availability (SF806GH variant).

Technical Context

The SF806G integrates two independent silicon die in a single TO-220AB thermally optimized package, enabling dual-path conduction without external paralleling. Its super fast recovery (t_rr ≤ 35 ns) and low Q_rr minimize switching losses in high-frequency SMPS topologies operating up to several hundred kHz.

Rated for continuous 8 A forward current and 125 A non-repetitive surge (8.3 ms half-sine), it sustains junction temperatures from –55°C to +150°C with 3 °C/W junction-to-case thermal resistance-critical for thermally constrained industrial and automotive power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum blocking voltage in reverse bias; defines usable input voltage range in 400 V-class DC-DC and inverter designs.
I_F	8 A - Continuous average forward current; supports output stages delivering up to ~100 W at typical efficiency levels.
t_rr	35 ns - Reverse recovery time; enables operation in 200–500 kHz switching converters with low EMI and reduced diode switching loss.
V_F	1.300 V @ 4 A, 25°C - Forward voltage drop per diode; determines conduction loss and thermal load under nominal load conditions.
R_θJC	3 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting with predictable temperature rise under full load.
C_J	50 pF @ 1 MHz, 4 V - Junction capacitance per diode; impacts high-frequency turn-off behavior and snubber design requirements.

Pinout & Package

TO-220AB package with three terminals: Anode 1, Cathode (common), Anode 2 - configured as dual independent diodes sharing a common cathode terminal. Mounting hole centered on tab; matte tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Tab / Pin 1	Cathode (Common)	Electrically connected to metal tab; must be isolated from heatsink unless circuit ground reference permits.
Pin 2	Anode 1	First diode anode; used for independent path routing or parallel conduction with Pin 3.
Pin 3	Anode 2	Second diode anode; enables dual-output or interleaved converter configurations without external diode pairing.

Key Features

Feature	Design Value
Dual-die configuration	Two independent 400 V/8 A rectifiers in one TO-220AB footprint-reduces PCB area vs. discrete dual-diode solutions.
Super fast recovery (t_rr ≤ 35 ns)	Enables high-frequency switching (>200 kHz) with minimal reverse recovery loss and associated EMI generation.
Low V_F = 1.300 V @ 4 A	Reduces conduction loss by ~15% compared to standard FRDs with V_F > 1.5 V at same current, improving thermal margin.
R_θJC = 3 °C/W	Supports direct heatsink mounting with ≤24°C temperature rise at 8 A, simplifying thermal design in space-constrained enclosures.

Applications

DC-DC Converters	Switching Inverters
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–380 V input DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling rectifier handling 8 A continuous output current with minimal voltage drop and fast turn-off. Use Value: 1.300 V V_F and 35 ns t_rr reduce power loss by ≥0.8 W per diode versus standard FRDs, lowering heatsink requirements.	Use Scenario: Output stage anti-parallel diodes in 3-phase motor inverters for HVAC and industrial drives. IC Role / Device Role / Timing Role: Bidirectional current path during PWM dead-time; clamps inductive kickback with low stored charge. Use Value: Dual-die layout allows independent connection to each phase leg, eliminating interconnect inductance between discrete devices.
Freewheeling Circuits	Automotive Power Supplies
Use Scenario: Inductor flyback path in buck-derived point-of-load regulators supplying FPGAs or ASICs. IC Role / Device Role / Timing Role: Conducts during MOSFET off-time; recovers rapidly before next switching cycle begins. Use Value: 35 ns t_rr ensures full recovery before typical 500 kHz switching periods (2 µs), preventing shoot-through risk.	Use Scenario: Input rectification and transient suppression in 12 V/24 V automotive DC-DC modules meeting AEC-Q101 stress requirements. IC Role / Device Role / Timing Role: Primary rectifier handling load dump transients and cold-crank low-voltage operation. Use Value: 125 A I_FSM and –55°C to +150°C T_J rating support ISO 16750-2 pulse 4/5 and extended temperature cycling.

DC-DC Converters

Switching Inverters

Use Scenario: Secondary-side synchronous rectification in isolated 48 V–380 V input DC-DC converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Freewheeling rectifier handling 8 A continuous output current with minimal voltage drop and fast turn-off.

Use Value: 1.300 V V_F and 35 ns t_rr reduce power loss by ≥0.8 W per diode versus standard FRDs, lowering heatsink requirements.

Use Scenario: Output stage anti-parallel diodes in 3-phase motor inverters for HVAC and industrial drives.

IC Role / Device Role / Timing Role: Bidirectional current path during PWM dead-time; clamps inductive kickback with low stored charge.

Use Value: Dual-die layout allows independent connection to each phase leg, eliminating interconnect inductance between discrete devices.

Freewheeling Circuits

Automotive Power Supplies

Use Scenario: Inductor flyback path in buck-derived point-of-load regulators supplying FPGAs or ASICs.

IC Role / Device Role / Timing Role: Conducts during MOSFET off-time; recovers rapidly before next switching cycle begins.

Use Value: 35 ns t_rr ensures full recovery before typical 500 kHz switching periods (2 µs), preventing shoot-through risk.

Use Scenario: Input rectification and transient suppression in 12 V/24 V automotive DC-DC modules meeting AEC-Q101 stress requirements.

IC Role / Device Role / Timing Role: Primary rectifier handling load dump transients and cold-crank low-voltage operation.

Use Value: 125 A I_FSM and –55°C to +150°C T_J rating support ISO 16750-2 pulse 4/5 and extended temperature cycling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8R04DJF	V_RRM = 400 V, I_F = 8 A, t_rr = 30 ns, TO-220AC package (single anode)	Single-diode topology requires two devices for dual-path use; lower t_rr but no shared cathode convenience	Select when lowest possible recovery time is prioritized over board space and dual-anode integration.
VS-8EWH04FN-M3	V_RRM = 400 V, I_F = 8 A, t_rr = 32 ns, TO-220AB with isolated tab	Electrically isolated tab eliminates need for insulating washer; slightly higher V_F (1.35 V)	Select when heatsink grounding constraints require isolation, accepting minor conduction loss trade-off.

Compared with STTH8R04DJF and VS-8EWH04FN-M3, the SF806G uniquely combines dual-anode integration, common-cathode topology, and AEC-Q101 qualification path (via SF806GH) in a cost-optimized TO-220AB-ideal for space-constrained dual-path freewheeling where thermal coupling and layout simplicity matter.

Availability

SF806G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling circuits requiring stable component supply, consistent parametric performance across production lots, and long-term industrial lifecycle support.

Supply support for SF806G 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The SF801G–SF808G family targets high-efficiency, high-reliability AC/DC and DC/DC power conversion systems-designed specifically for applications demanding low V_F, fast t_rr, and robust surge capability in compact TO-220AB packaging.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the SF806G?

The SF806G has a maximum repetitive peak reverse voltage (V_RRM) of 400 V, as specified in the Absolute Maximum Ratings table. This value defines the highest reverse-bias voltage the device can block continuously without breakdown and is confirmed across all electrical test conditions in the official Taiwan Semiconductor datasheet revision I2104.

Does the SF806G have AEC-Q101 qualification?

The base SF806G is not AEC-Q101 qualified; however, the SF806GH variant-identical in all electrical and thermal specifications-is explicitly qualified per AEC-Q101. The "H" suffix denotes qualification, and both versions share the same TO-220AB package, pinout, and marking format except for the suffix letter.

What is the forward voltage (V_F) of the SF806G under standard test conditions?

The SF806G exhibits a typical forward voltage (V_F) of 1.300 V at 4 A forward current and 25°C junction temperature, as measured per the Electrical Specifications table. This value is confirmed for both diodes in the dual-die configuration and applies to each anode-to-cathode path independently.

How many diodes are integrated into the SF806G, and how are they configured?

The SF806G integrates two independent silicon rectifier diodes in a single TO-220AB package, configured with a common cathode (Pin 1/Tab) and separate anodes (Pin 2 and Pin 3). This dual-anode, single-cathode arrangement enables flexible routing for interleaved or dual-output power stages without external paralleling.

What is the junction-to-case thermal resistance (R_θJC) of the SF806G?

The SF806G has a typical junction-to-case thermal resistance (R_θJC) of 3 °C/W, as published in the Thermal Performance section. This value is measured from the silicon die junction to the metal tab surface and is valid for both diodes operating simultaneously under rated conditions.

SF806G C0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 8A

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:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

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

SF806G C0G FAQ

1.How can I place an order for SF806G C0G through Aetrix?

Please submit a Request for Quotation (RFQ) for SF806G C0G 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 SF806G C0G reliable?

The price and inventory of SF806G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF806G C0G is usually 5 days.

3.What payment methods are accepted for SF806G C0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF806G C0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF806G C0G?

SF806G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF806G C0G 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 SF806G C0G?

For technical support, including SF806G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF806G C0G requirements.

6.How does Aetrix verify that SF806G C0G is sourced from the original manufacturer or authorized distributors?

All SF806G C0G 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 SF806G C0G meets industry standards.

7.What is the process for return or replacement of SF806G C0G?

All SF806G C0G units undergo pre-shipment inspection (PSI). If there is an issue with SF806G C0G, 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 SF806G C0G part is unused and in its original packaging.

Return procedure for SF806G C0G:

1.Submit a request within 90 days.

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

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