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Taiwan Semiconductor Corporation SFAF2008GH
- Part No.:
- SFAF2008GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
SFAF2008GH.pdf
- Description:
- DIODE GEN PURP 600V 20A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
SFAF2008GH from Taiwan Semiconductor is a 20 A, 600 V super fast rectifier diode in ITO-220AC package, featuring 1.700 V forward voltage at 20 A and 25°C, 35 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability in high-frequency switching power supplies.
For engineers reviewing the SFAF2008GH datasheet, SFAF2008GH pinout, SFAF2008GH application, or SFAF2008GH equivalent, key selection criteria include peak repetitive reverse voltage (600 V), surge current capability (200 A), junction-to-case thermal resistance (3°C/W), and AEC-Q101 qualification status for under-hood automotive use.
Technical Context
This super fast rectifier uses a glass-passivated single-die silicon junction optimized for high-efficiency DC/DC conversion. Its 35 ns trr and low Qrr support operation in hard-switched SMPS topologies up to several hundred kHz while minimizing switching losses.
The device operates across -55°C to +150°C junction temperature range with 3°C/W RθJC, enabling direct heatsink mounting via the ITO-220AC case. UL Recognized (E-326243) and RoHS/halogen-free compliance confirm suitability for safety-critical industrial and automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports input stages of 400 V AC-derived or 300–450 V DC bus systems |
| IF | 20 A continuous - delivers full-rated output in compact 1U server PSUs or EV onboard chargers |
| IFSM | 200 A (8.3 ms half-sine) - withstands inrush and transient overloads without failure |
| VF | 1.700 V @ 20 A, 25°C - limits conduction loss to ≤34 W at full load, easing thermal design |
| trr | 35 ns - enables efficient operation in 200–500 kHz switching converters |
| RθJC | 3°C/W - allows ≥10 W dissipation with ≤30°C case-to-heatsink ΔT using standard mounting torque (0.56 N·m) |
| AEC-Q101 | Qualified - certified for automotive powertrain and body electronics per stress test requirements |
Pinout & Package
ITO-220AC package with isolated metal tab (cathode-connected), matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to high-side switch node or transformer secondary; requires PCB copper pour for thermal relief |
| Cathode (Tab) | Output current exit / heat path | Electrically active cathode terminal; must be electrically isolated from heatsink unless circuit design permits common-cathode configuration |
| Cathode (Lead 2) | Secondary cathode connection | Provides redundant low-inductance return path; used in parallel configurations or low-noise layouts |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid or under-hood environments |
| UL Recognized (E-326243) | Validates flammability, dielectric strength, and construction integrity for end-equipment safety certification |
| Junction capacitance: 150 pF | Reduces capacitive coupling noise in EMI-sensitive gate-drive or feedback paths |
| Low power loss at 20 A | Enables >95% efficiency in 12 V/20 A output rails without forced air cooling |
| Halogen-free per IEC 61249-2-21 | Meets automotive OEM material declarations and end-of-life recycling requirements |
Applications
| Automotive Onboard Charger (OBC) | Industrial DC/DC Converter |
|---|---|
Use Scenario: Rectifying high-frequency AC from resonant LLC transformer secondary in 6.6 kW OBC. IC Role / Device Role / Timing Role: Super fast output rectifier handling 20 A DC with minimal reverse recovery loss. Use Value: 35 ns trr and 600 V VRRM enable zero-voltage switching (ZVS) boundary maintenance, reducing MOSFET stress and improving system efficiency by ~1.2%. | Use Scenario: Output stage rectification in 48 V to 12 V telecom DC/DC module operating at 300 kHz. IC Role / Device Role / Timing Role: Primary unidirectional current path with low VF and stable thermal impedance. Use Value: 3°C/W RθJC and 200 A IFSM allow sustained 20 A delivery under 85°C ambient without derating, supporting fanless deployment. |
| Server PSU Secondary Side | Solar Microinverter Freewheeling |
Use Scenario: Synchronous rectifier replacement in 1U 1600 W server power supply secondary. IC Role / Device Role / Timing Role: High-current freewheeling diode during synchronous FET dead-time intervals. Use Value: 1.700 V VF ensures <1.5% conduction loss penalty versus MOSFET sync rectifiers, simplifying control while maintaining >96% efficiency. | Use Scenario: Bidirectional freewheeling path in H-bridge solar microinverter during reactive power circulation. IC Role / Device Role / Timing Role: Fast-recovery path clamping inductive kickback during PWM transitions. Use Value: 35 ns trr prevents shoot-through risk and limits voltage overshoot to <10% of bus, protecting IGBTs and reducing snubber size. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2006D | 600 V VRRM, 20 A IF, 35 ns trr, but TO-220AC package lacks AEC-Q101 qualification | Not approved for automotive powertrain; limited to industrial/commercial use | Select when AEC-Q101 is not required and legacy STMicro footprint compatibility is prioritized |
| IXYS MUR2060CT | Dual common-cathode configuration, same 600 V/20 A rating, 35 ns trr, but TO-220AB package has higher RθJC (4.5°C/W) | Requires dual-diode layout; less thermally efficient in single-output designs | Choose only when dual-output or interleaved topology demands matched pair devices |
Compared with STTH2006D and IXYS MUR2060CT, the SFAF2008GH uniquely combines AEC-Q101 qualification, 3°C/W thermal resistance, and single-diode ITO-220AC packaging-making it the preferred choice for space-constrained, thermally demanding automotive and industrial rectification where qualification and thermal performance are non-negotiable.
Availability
SFAF2008GH is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial DC/DC converters, and solar microinverters requiring stable component supply with AEC-Q101 assurance and consistent thermal performance.
Supply support for SFAF2008GH 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 global automotive, industrial, and computing markets since 1979.
The SFAF2008GH belongs to TSC's AEC-Q101-qualified super fast rectifier product line, engineered specifically for high-reliability, high-efficiency power conversion in automotive electrification and ruggedized industrial equipment.
FAQ
What is the peak repetitive reverse voltage rating for SFAF2008GH?
The SFAF2008GH has a peak repetitive reverse voltage (VRRM) rating of 600 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2105). It defines the maximum allowable reverse-biased voltage the device can block continuously without breakdown, making SFAF2008GH suitable for 400 V AC-input or 300–450 V DC-link applications where safety margin and transient tolerance are critical.
Is SFAF2008GH qualified to AEC-Q101 standards?
Yes, SFAF2008GH is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code and confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including HTSL, TC, UHAST, and ESD per AEC-Q101 Rev D, validating SFAF2008GH for automotive powertrain and body electronics applications where long-term reliability under thermal and mechanical stress is mandatory.
What is the forward voltage drop of SFAF2008GH at rated current?
The forward voltage (VF) of SFAF2008GH is 1.700 V at 20 A and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures (e.g., 125°C), VF decreases slightly due to semiconductor physics, but system-level thermal design must ensure average power dissipation remains within the 3°C/W RθJC-limited envelope for SFAF2008GH.
Does SFAF2008GH have a specified reverse recovery time?
Yes, SFAF2008GH has a maximum reverse recovery time (trr) of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is critical for high-frequency switching applications such as LLC resonant converters and phase-shifted full-bridge topologies. The 35 ns trr directly contributes to reduced switching losses and lower EMI generation compared to standard fast recovery diodes, confirming SFAF2008GH's suitability as a super fast rectifier.
What package type does SFAF2008GH use, and how is polarity marked?
SFAF2008GH uses the ITO-220AC package, which features an isolated metal tab (cathode-connected) and two leads: anode (lead 1) and cathode (lead 2). Polarity is marked on the device body per the Marking Diagram in the datasheet - the cathode is indicated by a band or notch adjacent to lead 2. The ITO-220AC construction meets UL 94V-0 flammability rating and supports mounting torque up to 0.56 N·m, ensuring mechanical robustness in vibration-prone automotive environments.
SFAF2008GH 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):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 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
SFAF2008GH FAQ
1.How can I place an order for SFAF2008GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SFAF2008GH 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 SFAF2008GH reliable?
The price and inventory of SFAF2008GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF2008GH is usually 5 days.
3.What payment methods are accepted for SFAF2008GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF2008GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFAF2008GH?
SFAF2008GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFAF2008GH 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 SFAF2008GH?
For technical support, including SFAF2008GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF2008GH requirements.
6.How does Aetrix verify that SFAF2008GH is sourced from the original manufacturer or authorized distributors?
All SFAF2008GH 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 SFAF2008GH meets industry standards.
7.What is the process for return or replacement of SFAF2008GH?
All SFAF2008GH units undergo pre-shipment inspection (PSI). If there is an issue with SFAF2008GH, 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 SFAF2008GH part is unused and in its original packaging.
Return procedure for SFAF2008GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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