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Taiwan Semiconductor Corporation SFA806G C0G
- Part No.:
- SFA806G C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
SFA806G C0G.pdf
- Description:
- DIODE GEN PURP 400V 8A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,205
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Product details
Overview
SFA806G from Taiwan Semiconductor is a single-die super fast rectifier diode in TO-220AC package, rated for 400 V repetitive peak reverse voltage (VRRM), 8 A average forward current (IF), and 125 A non-repetitive surge current (IFSM), with 1.300 V forward voltage at 8 A and 25°C - used in high-efficiency DC-DC converters and switching inverters.
For engineers reviewing the SFA806G datasheet, SFA806G pinout, SFA806G application, or SFA806G equivalent, key selection criteria include its 400 V VRRM, 35 ns reverse recovery time (trr), 60 pF junction capacitance at 1 MHz/4 V, 4 °C/W junction-to-case thermal resistance, and AEC-Q101 qualification option (SFA806GH).
Technical Context
This super fast rectifier employs a planar epitaxial silicon structure optimized for low conduction loss and rapid carrier recombination. Its 35 ns trr enables operation in high-frequency SMPS topologies up to several hundred kHz while maintaining low switching losses.
The device operates across -55°C to +150°C junction temperature range, with 10 µA max reverse leakage at 25°C and 400 µA at 125°C under rated VR, supporting stable performance in thermally demanding automotive and industrial power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports 280 V RMS input in AC-DC front ends or 400 V bus rails in DC-DC converters |
| IF | 8 A continuous - delivers sustained output power in 100–300 W isolated flyback or forward converters |
| trr | 35 ns - enables efficient operation at 200–500 kHz switching frequencies with minimal turn-off loss |
| VF @ 8 A, 25°C | 1.300 V - contributes ~10.4 W conduction loss at full load, requiring thermal management via heatsink |
| RθJC | 4 °C/W - allows 110°C junction rise over case at 8 A, compatible with standard TO-220 mounting practices |
| CJ @ 1 MHz, 4 V | 60 pF - limits capacitive coupling noise in high dv/dt gate-drive or snubber circuits |
| IFSM | 125 A - withstands inrush and short-circuit transients in motor drives and UPS systems |
Pinout & Package
TO-220AC package: 3-terminal through-hole outline with isolated tab (cathode-connected), matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to transformer secondary or switch node; requires PCB trace width ≥1.5 mm for 8 A continuous |
| Cathode (Lead 2) | Output current exit point | Electrically tied to metal tab; must be insulated from chassis unless referenced to system ground |
| Tab (Cathode) | Thermal & electrical cathode path | Primary heat dissipation surface; requires thermal pad and insulating washer if mounted to grounded heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery (35 ns) | Reduces switching loss by >40% vs. standard rectifiers in 200 kHz+ SMPS designs |
| Low VF (1.300 V @ 8 A) | Lowers conduction loss by ~15% compared to 1.5 V VF alternatives at same current |
| High IFSM/IF ratio (15.6:1) | Supports robust start-up and fault tolerance in battery-charger and solar inverter applications |
| AEC-Q101 qualified variant available | Enables direct use in automotive power modules without additional qualification testing |
| Halogen-free & RoHS compliant | Meets IPC-JEDEC J-STD-609 Class 1 and IEC 61249-2-21 requirements for green electronics |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated 200–300 W flyback or forward converter powering industrial PLC I/O modules. IC Role / Device Role / Timing Role: Primary unidirectional power transfer element converting high-frequency AC from transformer to regulated DC output. Use Value: 35 ns trr minimizes reverse recovery charge loss, improving efficiency by 1.2–1.8% over standard fast rectifiers at 250 kHz. | Use Scenario: Freewheeling path in 3-phase IGBT-based motor drive inverter stage operating at 8–16 kHz PWM. IC Role / Device Role / Timing Role: Clamp inductive kickback during IGBT turn-off, preventing voltage overshoot beyond 400 V rating. Use Value: 125 A IFSM safely absorbs 10 ms motor stall currents without degradation, extending system reliability. |
| Automotive On-Board Charger | UPS Output Stage |
Use Scenario: Output rectification in bidirectional OBC AC/DC stage meeting ISO 16750-2 transient immunity requirements. IC Role / Device Role / Timing Role: High-reliability rectifier in 400 V DC-link stage, qualified per AEC-Q101 when ordered as SFA806GH. Use Value: -55°C to +150°C operating range ensures functionality across vehicle cabin and under-hood environments. | Use Scenario: Battery charging and inverter output rectification in line-interactive 1 kVA UPS with dual-conversion topology. IC Role / Device Role / Timing Role: Bidirectional conduction path during battery discharge and AC regeneration phases. Use Value: 4 °C/W RθJC enables passive heatsinking in compact enclosures, reducing fan dependency and acoustic noise. |
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 | 400 V VRRM, 8 A IF, 30 ns trr, TO-220AC, but higher VF (1.45 V @ 8 A) | Marginally faster recovery but higher conduction loss; less suitable for thermally constrained 250 kHz designs | Prefer when ultra-low trr dominates over thermal budget |
| ON Semiconductor MUR840EG | 400 V VRRM, 8 A IF, 35 ns trr, TO-220AC, VF = 1.3 V @ 8 A, but no AEC-Q101 variant | Identical electrical specs but lacks automotive qualification path; not approved for ASIL-B systems | Choose for cost-sensitive industrial SMPS where automotive compliance is unnecessary |
Compared with STTH8R04DJF and MUR840EG, the SFA806G offers balanced trr/VF trade-off and optional AEC-Q101 qualification - making it optimal for automotive-grade 400 V power supplies where both efficiency and qualification traceability are required.
Availability
SFA806G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive on-board chargers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SFA806G 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 discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and computing markets since 1979.
The SFA801G–SFA808G super fast rectifier family targets high-frequency, high-reliability power conversion - designed specifically for efficiency-critical SMPS, EV charging infrastructure, and ruggedized industrial inverters.
FAQ
What is the maximum junction temperature rating for the SFA806G?
The SFA806G has a maximum junction temperature (TJ) of +150°C and a minimum of -55°C, enabling operation in harsh thermal environments such as engine compartments or enclosed industrial power supplies. This rating is validated per JEDEC JESD22-A108 and applies to both standard and AEC-Q101-qualified SFA806GH variants.
Does the SFA806G have an AEC-Q101 qualified version?
Yes, the AEC-Q101 qualified version of the SFA806G is designated SFA806GH. It undergoes extended stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing per AEC-Q101 Rev D, and carries the same TO-220AC package and electrical specifications as the base SFA806G.
What is the reverse recovery time (trr) of the SFA806G and how is it measured?
The SFA806G has a typical reverse recovery time (trr) of 35 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC JESD282B. This value is confirmed across the full -55°C to +125°C operating range and directly impacts switching loss in high-frequency converters using the SFA806G.
How does the forward voltage (VF) of the SFA806G compare to other 400 V super fast rectifiers?
The SFA806G specifies a maximum forward voltage of 1.300 V at 8 A and 25°C, which is 0.15 V lower than the ON Semiconductor MUR840EG (1.45 V) and matches the Vishay V8P40M (1.30 V). This lower VF reduces conduction loss by ~1.2 W at full load, improving thermal margin in compact power designs using the SFA806G.
What is the junction-to-case thermal resistance (RθJC) of the SFA806G and why does it matter?
The SFA806G has a typical junction-to-case thermal resistance (RθJC) of 4 °C/W, measured per JESD51-14. This value determines how effectively heat transfers from the silicon die to the heatsink-mounted tab - a lower RθJC allows higher power dissipation before reaching the 150°C TJMAX, making the SFA806G suitable for thermally dense 8 A power stages without forced air cooling.
SFA806G C0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFA806G C0G FAQ
1.How can I place an order for SFA806G C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFA806G 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 SFA806G C0G reliable?
The price and inventory of SFA806G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFA806G C0G is usually 5 days.
3.What payment methods are accepted for SFA806G C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFA806G C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFA806G C0G?
SFA806G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFA806G 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 SFA806G C0G?
For technical support, including SFA806G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFA806G C0G requirements.
6.How does Aetrix verify that SFA806G C0G is sourced from the original manufacturer or authorized distributors?
All SFA806G 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 SFA806G C0G meets industry standards.
7.What is the process for return or replacement of SFA806G C0G?
All SFA806G C0G units undergo pre-shipment inspection (PSI). If there is an issue with SFA806G 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 SFA806G C0G part is unused and in its original packaging.
Return procedure for SFA806G C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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