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

Taiwan Semiconductor Corporation SFA807G

Name: SFA807G
Brand: Taiwan Semiconductor Corporation
SKU: SFA807G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFA807G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: SFA807G.pdf

Description:: 35NS, 8A, 500V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:7,376

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Product details

Overview

SFA807G from Taiwan Semiconductor is an AEC-Q101-qualified super fast rectifier diode in TO-220AC package, rated for 500 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 1.7 V forward voltage at 8 A and 25°C. It delivers low power loss and high surge capability (I_FSM = 125 A) for switching-mode power supplies in automotive and industrial DC/DC converters.

For engineers reviewing the SFA807G datasheet, SFA807G pinout, SFA807G application, or SFA807G equivalent, key selection criteria include its 500 V V_RRM, 35 ns reverse recovery time (t_rr), 60 pF junction capacitance, 4 °C/W junction-to-case thermal resistance, and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

The SFA807G is a single-die, unidirectional super fast recovery rectifier optimized for high-frequency switching applications. Its 35 ns t_rr and low Q_rr minimize switching losses, while the 500 V V_RRM and 125 A I_FSM support robust operation under transient overloads in SMPS and freewheeling paths.

Thermally, it features a TO-220AC package with 4 °C/W R_θJC, enabling efficient heat transfer to heatsinks. The device operates across –55°C to +150°C junction temperature range and exhibits only 400 µA reverse leakage at 125°C - critical for stable performance in under-hood automotive environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	500 V - supports input stages of 400 V DC bus systems with 25% safety margin
I_F	8 A continuous - sustains steady-state conduction in mid-power SMPS outputs
t_rr	35 ns - enables efficient operation up to ~500 kHz switching frequencies
V_F	1.7 V @ 8 A, 25°C - contributes to <13.6 W conduction loss at full load
C_J	60 pF @ 1 MHz, 4 V - reduces capacitive switching noise and EMI in high-dv/dt circuits
R_θJC	4 °C/W - allows 125°C junction temperature with ≤100°C case temp at 8 A
I_FSM	125 A @ 8.3 ms - withstands inrush and short-circuit surges without failure

Pinout & Package

Package: TO-220AC - insulated case, matte tin-plated leads, UL 94V-0 molding compound, 1.80 g weight, polarity marked on body.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Tab)	Current entry point, electrically connected to metal tab	Requires insulating washer when mounted to grounded heatsink; primary thermal path
Cathode (Lead 2)	Current exit point, marked with band on package	Connected to output rail or switching node; carries full load current
Lead 1 (NC)	No internal connection	Not bonded; must remain unconnected per design - no functional role

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood use including temperature cycling, HTRB, and ESD tests
Super fast recovery (35 ns)	Reduces reverse recovery charge (Q_rr) and associated switching losses vs. standard rectifiers
Low V_F = 1.7 V @ 8 A	Lowers conduction loss by ~18% compared to 2.0 V alternatives at same current
High I_FSM = 125 A	Enables robust protection against line transients and startup surges without derating
RoHS & halogen-free	Complies with IEC 61249-2-21 and automotive environmental compliance requirements

Applications

Automotive DC/DC Converters	Industrial Switch-Mode Power Supplies
Use Scenario: High-efficiency 12 V–48 V bidirectional DC/DC converter in 48 V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost stage, handling 8 A continuous reverse-recovery current. Use Value: 35 ns t_rr and 500 V V_RRM prevent shoot-through and ensure safe commutation during 200–300 kHz switching.	Use Scenario: Output rectification in 500 W telecom rectifier with 380 V DC input and 12 V/40 A output. IC Role / Device Role / Timing Role: Secondary-side super fast rectifier replacing Schottky in cost-sensitive, thermally constrained designs. Use Value: 1.7 V V_F and 4 °C/W R_θJC enable stable 8 A operation without forced air cooling.
UPS Inverter Stages	Motor Drive Freewheeling Paths
Use Scenario: Bidirectional inverter stage in online UPS converting 400 V DC bus to 230 V AC output. IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across IGBTs in H-bridge leg. Use Value: 125 A I_FSM handles motor regeneration spikes; 60 pF C_J limits dv/dt-induced false triggering.	Use Scenario: Snubberless freewheeling path in 750 W BLDC motor drive operating at 20 kHz PWM. IC Role / Device Role / Timing Role: Clamp diode across inductive windings during MOSFET turn-off. Use Value: Fast 35 ns recovery prevents voltage overshoot >600 V, eliminating need for RC snubbers.

Automotive DC/DC Converters

Industrial Switch-Mode Power Supplies

Use Scenario: High-efficiency 12 V–48 V bidirectional DC/DC converter in 48 V mild-hybrid vehicle architecture.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost stage, handling 8 A continuous reverse-recovery current.

Use Value: 35 ns t_rr and 500 V V_RRM prevent shoot-through and ensure safe commutation during 200–300 kHz switching.

Use Scenario: Output rectification in 500 W telecom rectifier with 380 V DC input and 12 V/40 A output.

IC Role / Device Role / Timing Role: Secondary-side super fast rectifier replacing Schottky in cost-sensitive, thermally constrained designs.

Use Value: 1.7 V V_F and 4 °C/W R_θJC enable stable 8 A operation without forced air cooling.

UPS Inverter Stages

Motor Drive Freewheeling Paths

Use Scenario: Bidirectional inverter stage in online UPS converting 400 V DC bus to 230 V AC output.

IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across IGBTs in H-bridge leg.

Use Value: 125 A I_FSM handles motor regeneration spikes; 60 pF C_J limits dv/dt-induced false triggering.

Use Scenario: Snubberless freewheeling path in 750 W BLDC motor drive operating at 20 kHz PWM.

IC Role / Device Role / Timing Role: Clamp diode across inductive windings during MOSFET turn-off.

Use Value: Fast 35 ns recovery prevents voltage overshoot >600 V, eliminating need for RC snubbers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8R06D	600 V V_RRM, 8 A I_F, 1.85 V V_F, 40 ns t_rr, TO-220AC	Higher V_RRM but higher V_F and slower recovery than SFA807G	Prefer when 600 V margin is required and 0.15 V higher conduction loss is acceptable
VS-8EWH06FN-M3	600 V V_RRM, 8 A I_F, 1.75 V V_F, 30 ns t_rr, TO-220AC, AEC-Q101	30 ns t_rr (5 ns faster), identical V_F, same qualification level	Choose when sub-35 ns recovery is needed for >600 kHz operation or lower EMI

Compared with STTH8R06D and VS-8EWH06FN-M3, the SFA807G offers optimal balance of 500 V rating, 1.7 V V_F, and 35 ns t_rr for cost-sensitive automotive and industrial SMPS where 600 V margin is unnecessary and thermal efficiency is prioritized over ultra-fast switching.

Availability

SFA807G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial switch-mode power supplies, and UPS inverter stages requiring stable component supply with AEC-Q101 assurance and TO-220AC mechanical compatibility.

Supply support for SFA807G 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 automotive, industrial, and consumer markets since 1979.

The SFA801G–SFA808G series was designed specifically for high-reliability, high-frequency rectification in automotive power conversion - emphasizing AEC-Q101 qualification, low V_F, fast t_rr, and robust surge tolerance.

FAQ

What is the maximum junction temperature rating for the SFA807G?

The SFA807G has a maximum junction temperature (T_J) of +150°C, with a storage temperature range of –55°C to +150°C. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures. Derating curves in the official SFA807G datasheet define allowable I_F versus case temperature, and the 4 °C/W R_θJC supports thermal design up to this limit when properly heatsinked.

Is the SFA807G pin-compatible with other devices in the SFA801G–SFA808G family?

Yes, all SFA801G–SFA808G devices share identical TO-220AC packaging, pinout, and terminal configuration - Anode (tab), Cathode (lead 2), and NC (lead 1). The SFA807G can be substituted within the same footprint for any voltage variant in the family, provided the 500 V V_RRM meets system requirements. No PCB layout change is needed for family-level replacement.

Does the SFA807G have AEC-Q101 qualification?

Yes, the SFA807G is AEC-Q101 qualified - confirmed in the official Taiwan Semiconductor documentation for the SFA801G–SFA808G series. Qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making the SFA807G suitable for automotive powertrain and chassis applications where reliability is mission-critical.

What is the reverse recovery time (t_rr) specification for the SFA807G?

The SFA807G has a typical reverse recovery time (t_rr) of 35 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is confirmed in the Electrical Specifications table of the SFA807G datasheet and reflects its super fast recovery performance, enabling efficient operation in high-frequency switching topologies such as phase-shifted full-bridge and LLC resonant converters.

How does the forward voltage (V_F) of the SFA807G compare to lower-voltage variants in the same family?

The SFA807G exhibits a typical forward voltage (V_F) of 1.7 V at 8 A and 25°C - higher than SFA804G (0.975 V) but lower than SFA808G (1.7 V, same spec). This increase reflects the trade-off between higher blocking voltage and conduction loss. At 125°C, V_F decreases slightly due to negative temperature coefficient, maintaining predictable thermal behavior in the SFA807G across its operating range.

SFA807G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 500 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 8 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 500 V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

SFA807G FAQ

1.How can I place an order for SFA807G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFA807G 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 SFA807G reliable?

The price and inventory of SFA807G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFA807G is usually 5 days.

3.What payment methods are accepted for SFA807G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFA807G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFA807G?

SFA807G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFA807G 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 SFA807G?

For technical support, including SFA807G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFA807G requirements.

6.How does Aetrix verify that SFA807G is sourced from the original manufacturer or authorized distributors?

All SFA807G 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 SFA807G meets industry standards.

7.What is the process for return or replacement of SFA807G?

All SFA807G units undergo pre-shipment inspection (PSI). If there is an issue with SFA807G, 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 SFA807G part is unused and in its original packaging.

Return procedure for SFA807G:

1.Submit a request within 90 days.

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

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