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Taiwan Semiconductor Corporation SFAF808GH
- Part No.:
- SFAF808GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF808GH.pdf
- Description:
- 35NS, 8A, 600V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:996
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Product details
Overview
SFAF808GH from Taiwan Semiconductor is an AEC-Q101-qualified super fast rectifier diode in ITO-220AC package, rated for 600 V repetitive peak reverse voltage (VRRM), 8 A average forward current (IF), and 125 A non-repetitive surge current (IFSM). It delivers 1.700 V max forward voltage at 8 A and 25°C, with 35 ns reverse recovery time (trr) and 60 pF junction capacitance-optimized for high-frequency switching in automotive DC/DC converters.
For engineers reviewing the SFAF808GH datasheet, SFAF808GH pinout, SFAF808GH application, or SFAF808GH equivalent, key selection considerations include its AEC-Q101 qualification, 600 V blocking capability, low trr for reduced switching loss, glass-passivated junction for reliability, and ITO-220AC thermal performance (RθJC = 4°C/W).
Technical Context
This super fast rectifier employs a single-die silicon PN junction with glass passivation to ensure stable operation under high dv/dt and repetitive surge stress. Its 35 ns reverse recovery time and low stored charge enable efficient operation in hard-switched topologies above 100 kHz.
The device operates across -55°C to +150°C junction temperature range and features matte tin-plated leads compliant with J-STD-002 solderability. UL Recognized (E-326243) and RoHS/halogen-free (IEC 61249-2-21) construction supports automotive and industrial safety requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum repetitive reverse blocking voltage without breakdown |
| IF | 8 A - continuous average forward current at case temperature ≤ 110°C |
| IFSM | 125 A - peak non-repetitive surge current (8.3 ms half-sine) |
| VF @ 8 A, 25°C | ≤1.700 V - forward conduction loss directly impacts efficiency in high-current paths |
| trr | ≤35 ns - enables high-frequency switching with minimal reverse recovery loss |
| RθJC | 4°C/W - thermal resistance from junction to case, critical for heatsink sizing |
| Junction temp. range | -55°C to +150°C - validated operating range for under-hood automotive environments |
Pinout & Package
Package: ITO-220AC - insulated TO-220 variant with isolated collector tab, UL 94V-0 molding compound, and 0.56 N·m max mounting torque. Polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/high-side node in freewheeling or output rectification |
| Cathode | Forward current exit point | Connected to ground/common return or low-side switch node |
| Collector Tab (isolated) | Thermal and mechanical mounting surface | Electrically isolated from die; used for heatsinking without electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements (HTOL, TC, HTRB, etc.) |
| Glass passivated junction | Enhances moisture resistance and long-term reliability under thermal cycling |
| Super fast recovery (trr ≤ 35 ns) | Reduces switching losses and EMI in SMPS operating >100 kHz |
| Low RθJC (4°C/W) | Enables higher power density with smaller heatsinks in space-constrained modules |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification in industrial and automotive systems |
Applications
| Automotive DC/DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: High-efficiency 12 V–48 V bidirectional DC/DC conversion in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asymmetrical half-bridge topology. Use Value: 600 V rating accommodates voltage transients; 35 ns trr minimizes cross-conduction loss during dead-time control. | Use Scenario: Output stage of 3 kW industrial UPS inverters converting DC bus to 230 V AC. IC Role / Device Role / Timing Role: Freewheeling diode across IGBTs in H-bridge output stage. Use Value: 125 A IFSM withstands motor startup surges; glass passivation ensures stability in dusty, humid factory environments. |
| Server Power Supply Rectification | Renewable Energy Charge Controllers |
Use Scenario: Secondary-side synchronous rectification replacement in 1U server PSUs with 12 V output rails. IC Role / Device Role / Timing Role: Fast recovery rectifier in active clamp forward or LLC resonant converter outputs. Use Value: 1.700 V VF balances conduction loss vs. SiC cost; ITO-220AC allows direct bolt-down to chassis ground. | Use Scenario: MPPT charge controller for 400 V solar string inputs charging 48 V battery banks. IC Role / Device Role / Timing Role: Input protection and reverse polarity blocking diode before buck converter stage. Use Value: 600 V VRRM covers open-circuit PV voltage spikes; AEC-Q101 grade ensures field longevity in outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06DJF | 600 V, 8 A, trr = 30 ns, TO-220AC package, no AEC-Q101 qualification | Targeted at industrial SMPS; lacks automotive stress validation | Select when AEC-Q101 is not required and slightly faster trr is prioritized |
| VS-8EWH06FN-M3 | 600 V, 8 A, trr = 40 ns, ITO-220AC, AEC-Q101 qualified, VF = 1.75 V max | Designed for EV onboard chargers; higher VF but same qualification level | Prefer when supply chain diversification is needed and 50 mV VF penalty is acceptable |
Compared with STTH8R06DJF and VS-8EWH06FN-M3, the SFAF808GH uniquely combines AEC-Q101 qualification, 600 V rating, 35 ns trr, and 1.700 V VF in ITO-220AC-making it optimal for automotive-grade, high-frequency rectification where reliability and thermal performance are co-prioritized.
Availability
SFAF808GH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial switch-mode inverters, and renewable energy charge controllers requiring stable component supply with AEC-Q101 assurance and thermal robustness.
Supply support for SFAF808GH 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 computing markets since 1979.
The SFAF80xG series targets high-reliability power conversion applications demanding fast recovery, high surge tolerance, and automotive qualification-designed specifically for next-generation 48 V systems and compact industrial PSUs.
FAQ
What is the maximum junction temperature rating for SFAF808GH?
The SFAF808GH has a maximum junction temperature (TJ) of +150°C, verified per AEC-Q101 stress testing. This rating allows operation in under-hood automotive environments and high-ambient industrial settings when mounted with appropriate heatsinking per its 4°C/W RθJC. Derating curves in the datasheet define safe IF limits above 25°C ambient.
Is SFAF808GH pin-compatible with other devices in the SFAF80xG family?
Yes, all SFAF80xG variants-including SFAF808GH-share identical ITO-220AC packaging, pinout (anode/cathode/tab), and mechanical footprint. Voltage ratings differ per part number (50 V to 600 V), but PCB layout, mounting, and thermal interface design remain unchanged across the family.
Does SFAF808GH require a heatsink in typical 8 A operation?
Yes, sustained 8 A conduction requires heatsinking. With RθJC = 4°C/W and max TJ = 150°C, even at 25°C ambient, junction temperature would exceed rating without thermal management. A heatsink maintaining case temperature ≤110°C is necessary-verified by thermal simulation or empirical measurement per application layout.
What does the "H" suffix signify in SFAF808GH?
The "H" suffix in SFAF808GH explicitly denotes AEC-Q101 qualification. This means the device has passed accelerated stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and high-temperature reverse bias (HTRB)-validating suitability for automotive power electronics where reliability is mission-critical.
How does the junction capacitance of SFAF808GH affect high-frequency performance?
SFAF808GH exhibits 60 pF typical junction capacitance at 4.0 V reverse bias and 1 MHz. This low CJ reduces capacitive turn-on loss and improves EMI profile in >100 kHz switching applications-critical for minimizing noise in automotive DC/DC converters and enabling tighter gate drive timing margins in half-bridge configurations.
SFAF808GH 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):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFAF808GH FAQ
1.How can I place an order for SFAF808GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF808GH 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 SFAF808GH reliable?
The price and inventory of SFAF808GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF808GH is usually 5 days.
3.What payment methods are accepted for SFAF808GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF808GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF808GH?
SFAF808GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF808GH 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 SFAF808GH?
For technical support, including SFAF808GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF808GH requirements.
6.How does Aetrix verify that SFAF808GH is sourced from the original manufacturer or authorized distributors?
All SFAF808GH 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 SFAF808GH meets industry standards.
7.What is the process for return or replacement of SFAF808GH?
All SFAF808GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAF808GH, 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 SFAF808GH part is unused and in its original packaging.
Return procedure for SFAF808GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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