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

Taiwan Semiconductor Corporation SFAF2006GH

Name: SFAF2006GH
Brand: Taiwan Semiconductor Corporation
SKU: SFAF2006GH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF2006GH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF2006GH.pdf

Description:: 35NS, 20A, 400V, SUPER FAST RECO

Quantity:: RFQ Add To RFQ list

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Inventory:1,000

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Product details

Overview

SFAF2006GH from Taiwan Semiconductor is a 20 A, 400 V repetitive peak reverse voltage (V_RRM) super fast rectifier diode in ITO-220AC package, featuring 1.300 V forward voltage at 20 A and 25°C, 35 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary output rectifier in high-frequency DC-DC converters.

For engineers reviewing the SFAF2006GH datasheet, SFAF2006GH pinout, SFAF2006GH application, or SFAF2006GH equivalent, key selection criteria include its 400 V V_RRM, 200 A non-repetitive surge rating, 3 °C/W junction-to-case thermal resistance, AEC-Q101 qualification status, and ITO-220AC mounting compatibility with standard heatsinks.

Technical Context

This super fast rectifier employs glass-passivated silicon die to achieve low forward voltage and rapid carrier recombination. Its 35 ns trr enables operation in switching-mode power supplies up to several hundred kHz without excessive switching loss.

The device operates across -55°C to +150°C junction temperature range, supports 20 A continuous forward current with derating above 25°C case temperature, and delivers 150 pF junction capacitance at 1 MHz and 4.0 V reverse bias - critical for minimizing capacitive coupling in high-speed flyback topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC output stage
I_F	20 A - Continuous average forward current at T_C = 25°C; requires heatsinking above ambient
I_FSM	200 A - Single half-sine surge rating (8.3 ms); withstands inrush and fault transients
V_F	1.300 V @ 20 A, 25°C - Directly impacts conduction loss and thermal design in high-current paths
t_rr	35 ns - Enables efficient operation in 100–500 kHz SMPS without excessive switching loss
R_θJC	3 °C/W - Enables thermal modeling of junction temperature rise under 20 A load with known heatsink resistance
Junction Cap.	150 pF @ 1 MHz, 4 V - Limits high-frequency noise coupling in isolated feedback paths

Pinout & Package

Package: ITO-220AC - 3-terminal through-hole package with insulated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque. Polarity marked on device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to transformer secondary or switch node; must handle full 20 A RMS current
Cathode	Forward current exit point	Connected to output capacitor and load; polarity marking visible on case
Tab (Case)	Electrically connected to cathode	Provides mechanical mounting and thermal path; electrically tied to cathode - isolation required if cathode is not ground-referenced

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive powertrain and chassis applications per stress test requirements
Glass passivated junction	Enhances moisture resistance and long-term reliability under thermal cycling
Low V_F (1.300 V)	Reduces conduction loss by ~15% vs. standard fast rectifiers at 20 A, lowering heatsink demand
High I_FSM (200 A)	Supports robust startup and overload handling in industrial DC-DC modules without derating
UL Recognized (E-326243)	Meets safety standards for end-equipment certification in AC/DC and DC/DC systems

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Primary rectification in 48 V–400 V output isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Power diode conducting during transformer secondary positive half-cycle; handles 20 A continuous forward current. Use Value: 1.300 V V_F minimizes conduction loss at full load; 35 ns t_rr prevents reverse recovery shoot-through in synchronous designs.	Use Scenario: Freewheeling path in H-bridge inverters driving inductive motor loads in HVAC and industrial drives. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current when main switches turn off; clamps voltage spikes. Use Value: 400 V V_RRM safely blocks inverter bus voltage; 200 A I_FSM absorbs motor regeneration surges.
Automotive On-Board Charger (OBC)	Industrial UPS Rectifier Stage
Use Scenario: Secondary-side rectification in bidirectional OBCs converting AC grid to HV battery (400 V nominal). IC Role / Device Role / Timing Role: High-reliability rectifier in AC/DC and DC/DC stages; exposed to automotive thermal and vibration stress. Use Value: AEC-Q101 qualification ensures compliance with automotive quality and lifetime requirements; 150°C T_JMAX supports compact packaging.	Use Scenario: Input rectification in line-interactive UPS systems requiring high surge tolerance and thermal stability. IC Role / Device Role / Timing Role: Converts AC mains to DC bus; subjected to frequent overvoltage transients and harmonic currents. Use Value: Glass passivation and 200 A I_FSM ensure longevity under utility-grade disturbances; UL recognition simplifies system safety approval.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Primary rectification in 48 V–400 V output isolated DC-DC converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Power diode conducting during transformer secondary positive half-cycle; handles 20 A continuous forward current.

Use Value: 1.300 V V_F minimizes conduction loss at full load; 35 ns t_rr prevents reverse recovery shoot-through in synchronous designs.

Use Scenario: Freewheeling path in H-bridge inverters driving inductive motor loads in HVAC and industrial drives.

IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current when main switches turn off; clamps voltage spikes.

Use Value: 400 V V_RRM safely blocks inverter bus voltage; 200 A I_FSM absorbs motor regeneration surges.

Automotive On-Board Charger (OBC)

Industrial UPS Rectifier Stage

Use Scenario: Secondary-side rectification in bidirectional OBCs converting AC grid to HV battery (400 V nominal).

IC Role / Device Role / Timing Role: High-reliability rectifier in AC/DC and DC/DC stages; exposed to automotive thermal and vibration stress.

Use Value: AEC-Q101 qualification ensures compliance with automotive quality and lifetime requirements; 150°C T_JMAX supports compact packaging.

Use Scenario: Input rectification in line-interactive UPS systems requiring high surge tolerance and thermal stability.

IC Role / Device Role / Timing Role: Converts AC mains to DC bus; subjected to frequent overvoltage transients and harmonic currents.

Use Value: Glass passivation and 200 A I_FSM ensure longevity under utility-grade disturbances; UL recognition simplifies system safety approval.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2004TV	400 V V_RRM, 20 A I_F, 30 ns t_rr, TO-220AC package, no AEC-Q101	Higher speed but lacks automotive qualification; lower V_F (1.25 V) at 20 A	Preferred where ultra-low trr dominates over qualification requirements
VS-20EWH04-M3	400 V V_RRM, 20 A I_F, 35 ns t_rr, ITO-220AC, AEC-Q101 qualified	Identical electrical specs and qualification; different marking and traceability scheme	Drop-in alternative with same thermal and layout compatibility

Compared with STTH2004TV and VS-20EWH04-M3, the SFAF2006GH offers identical 400 V/20 A/35 ns performance and AEC-Q101 compliance like VS-20EWH04-M3, while differing from STTH2004TV in automotive qualification - making it suitable for safety-critical automotive power conversion where STTH2004TV would require additional validation.

Availability

SFAF2006GH is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial DC-DC converters, and uninterruptible power supplies requiring stable component supply, AEC-Q101 assurance, and ITO-220AC thermal performance.

Supply support for SFAF2006GH 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 devices, rectifiers, TVS diodes, and MOSFETs since 1979.

The SFAF2006GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered for high-efficiency, high-reliability power conversion in automotive and industrial environments where thermal robustness and surge immunity are critical.

FAQ

What is the maximum junction temperature rating for the SFAF2006GH?

The SFAF2006GH has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows operation in high-ambient environments such as engine compartments or enclosed industrial enclosures when paired with appropriate heatsinking. Derating begins above 25°C case temperature, and thermal design must maintain SFAF2006GH junction temperature below 150°C under worst-case load and ambient conditions.

Is the SFAF2006GH pin-compatible with other ITO-220AC rectifiers?

Yes, the SFAF2006GH uses the industry-standard ITO-220AC footprint with anode, cathode, and cathode-connected tab configuration. Its mechanical outline matches JEDEC MS-001-AB, enabling direct PCB replacement with other ITO-220AC rectifiers such as VS-20EWH04-M3 or STTH2004TV - provided thermal and electrical requirements are verified. Mounting torque must not exceed 0.56 N·m to avoid package damage.

Does the SFAF2006GH have UL recognition?

Yes, the SFAF2006GH is UL Recognized under File # E-326243, confirming compliance with UL 60747-5 for discrete semiconductors. This recognition applies to the entire SFAF2001G–SFAF2008G family and supports end-equipment safety certifications in AC/DC adapters, industrial power supplies, and automotive electronics where regulatory approval is mandatory.

What is the reverse recovery time (t_rr) specification for the SFAF2006GH?

The SFAF2006GH has a maximum reverse recovery time (t_rr) of 35 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the Taiwan Semiconductor datasheet. This value is consistent across the SFAF2005G–SFAF2008G group and enables efficient operation in high-frequency switching converters up to 500 kHz without significant switching loss or EMI penalties.

How does the "H" suffix in SFAF2006GH affect its specifications?

The "H" suffix in SFAF2006GH denotes full AEC-Q101 qualification, including stress testing for temperature cycling, humidity bias, high-temperature operating life, and ESD. Electrically and thermally, SFAF2006GH is identical to SFAF2006G; the "H" version undergoes additional screening and traceability controls required for automotive applications, with certified test reports available upon request.

SFAF2006GH 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):: 20A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 20 A

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

Reverse Recovery Time (trr):: 35 ns

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

Capacitance @ Vr, F:: 150pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AC

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

SFAF2006GH FAQ

1.How can I place an order for SFAF2006GH through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF2006GH 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 SFAF2006GH reliable?

The price and inventory of SFAF2006GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2006GH is usually 5 days.

3.What payment methods are accepted for SFAF2006GH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2006GH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF2006GH?

SFAF2006GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF2006GH 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 SFAF2006GH?

For technical support, including SFAF2006GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2006GH requirements.

6.How does Aetrix verify that SFAF2006GH is sourced from the original manufacturer or authorized distributors?

All SFAF2006GH 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 SFAF2006GH meets industry standards.

7.What is the process for return or replacement of SFAF2006GH?

All SFAF2006GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2006GH, 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 SFAF2006GH part is unused and in its original packaging.

Return procedure for SFAF2006GH:

1.Submit a request within 90 days.

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

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