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Taiwan Semiconductor Corporation SF47GHR0G
- Part No.:
- SF47GHR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF47GHR0G.pdf
- Description:
- DIODE GEN PURP 500V 4A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,926
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Product details
Overview
SF47GHR0G from Taiwan Semiconductor is a 500V, 4A super fast recovery rectifier diode in DO-201AD package, featuring 1.7V forward voltage at 4A and 35ns reverse recovery time; used in high-frequency switching mode power supplies for freewheeling and output rectification.
For engineers reviewing the SF47GHR0G datasheet, SF47GHR0G pinout, SF47GHR0G application, or SF47GHR0G equivalent, key selection criteria include VRRM = 500V, IF = 4A, trr = 35ns, VF = 1.7V @ 4A, and DO-201AD thermal performance (RθJA = 25°C/W).
Technical Context
This discrete silicon rectifier employs a single-die planar junction structure optimized for fast switching in DC-DC converters and SMPS secondary-side rectification. Its 500V repetitive peak reverse voltage and 125A surge rating support robust operation under transient load conditions.
The device achieves 35ns reverse recovery time with low junction capacitance (80pF @ 4V), enabling efficient high-frequency operation up to several hundred kHz while minimizing switching losses and EMI generation in compact power designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 500 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling circuits |
| IF | 4 A - Continuous average forward current; determines heatsink sizing and conduction loss in steady-state operation |
| trr | 35 ns - Reverse recovery time; directly impacts switching loss and EMI in >100 kHz topologies |
| VF | 1.7 V @ 4A - Forward voltage drop; sets conduction loss (Pcond ≈ 6.8W) and thermal design baseline |
| RθJA | 25 °C/W - Junction-to-ambient thermal resistance; enables estimation of junction temperature rise without heatsink |
| CJ | 80 pF @ 1MHz, 4V - Junction capacitance; influences high-frequency noise coupling and snubber design |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker test requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit point | Marked by band; connects to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery | 35ns trr enables efficient operation in 200–500 kHz SMPS without excessive switching loss |
| Low forward voltage | 1.7V @ 4A reduces conduction loss by ~15% vs. standard FR series at same current |
| High surge capability | 125A IFSM supports reliable startup and overload handling in unregulated converters |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for automotive and industrial applications requiring green compliance |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated buck-derived topologies (e.g., forward, flyback) delivering 12–48V outputs at 2–5A. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 35ns trr and 1.7V VF jointly reduce total power loss by ≥12% compared to standard fast recovery diodes at 250 kHz. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings, solenoids) in half-bridge inverters operating at 10–100 kHz. IC Role / Device Role / Timing Role: Clamping diode providing low-loss current recirculation during switch off-time. Use Value: 500V VRRM withstands voltage spikes from L·di/dt transients; 125A IFSM handles repetitive inrush surges. |
| AC-DC Adapter Secondary Rectification | Industrial Power Supply Snubber Network |
Use Scenario: Output rectification in compact 36W–65W universal-input AC-DC adapters using quasi-resonant flyback controllers. IC Role / Device Role / Timing Role: Main output rectifier conducting continuous 4A DC with minimal thermal rise. Use Value: RθJA = 25°C/W allows operation at full load without heatsink in vented enclosures up to 50°C ambient. | Use Scenario: RC snubber network clamp diode in IGBT-based motor drives where fast turn-off induces high dv/dt. IC Role / Device Role / Timing Role: Fast-recovery clamp element absorbing inductive energy during switching transitions. Use Value: 80pF CJ minimizes capacitive loading on gate drive, preserving switching speed; 35ns trr prevents reverse conduction overlap. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-4EY50 | VRRM = 500V, IF = 4A, trr = 35ns, VF = 1.75V @ 4A, DO-201AD | Identical voltage/current ratings; slightly higher VF increases conduction loss by ~0.2W | Preferred where Vishay supply chain alignment is required; no layout change needed |
| ON Semiconductor MUR450 | VRRM = 500V, IF = 4A, trr = 50ns, VF = 1.7V @ 4A, DO-201AD | Slower recovery (50ns vs. 35ns) raises switching loss in >300 kHz designs | Acceptable for <200 kHz applications; verify EMI compliance if replacing in existing 400 kHz design |
Compared with VS-4EY50 and MUR450, SF47GHR0G delivers identical 500V/4A capability with the fastest trr (35ns) in its class, making it optimal for high-frequency, low-loss SMPS where switching efficiency and thermal margin are critical.
Availability
SF47GHR0G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and industrial AC-DC adapter designs requiring stable component supply and AEC-Q101-grade reliability.
Supply support for SF47GHR0G 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 industrial, computing, and consumer markets since 1979.
The SF4xG series was developed specifically for high-efficiency, high-reliability power conversion in automotive-grade and industrial-grade switching power supplies, emphasizing fast recovery, low VF, and robust surge tolerance.
FAQ
What is the maximum junction temperature rating for SF47GHR0G?
The SF47GHR0G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official TSC datasheet. This rating allows operation in high-ambient environments when combined with appropriate PCB copper area or heatsinking. Derating begins above 25°C ambient, with full 4A current permitted only below 75°C ambient per the forward current derating curve. The SF47GHR0G must not exceed this limit to ensure long-term reliability.
Is SF47GHR0G AEC-Q101 qualified?
No - SF47GHR0G is not AEC-Q101 qualified. The "H" suffix (e.g., SF47GH) denotes AEC-Q101 qualification per the ordering information table. SF47GHR0G uses the base "G" variant, which meets RoHS and halogen-free standards but lacks automotive qualification testing. For automotive applications requiring AEC-Q101, specify SF47GH instead of SF47GHR0G.
What is the reverse recovery time (trr) test condition for SF47GHR0G?
The SF47GHR0G reverse recovery time is measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the Electrical Specifications table. This standardized test ensures consistent comparison across fast rectifiers. The specified trr value is 35ns maximum, confirmed under these exact conditions - not extrapolated or estimated. Designers should use this value directly in loss calculations for topologies operating above 100 kHz.
Does SF47GHR0G have a halogen-free construction?
Yes - SF47GHR0G is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC documentation. The molding compound contains no brominated or chlorinated flame retardants, and the device is fully RoHS compliant. This makes SF47GHR0G suitable for environmentally regulated industrial and consumer applications where halogen content restrictions apply.
What is the junction-to-ambient thermal resistance (RθJA) of SF47GHR0G?
The SF47GHR0G has a typical junction-to-ambient thermal resistance (RθJA) of 25°C/W, measured under standard JEDEC test conditions for DO-201AD packages on 1-inch² copper pad. This value enables direct estimation of junction temperature rise (ΔTJ = Ptot × 25°C/W) for thermal design. It applies only to the bare device on minimum copper; actual board layout will affect real-world performance.
SF47GHR0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 500 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 500 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF47GHR0G FAQ
1.How can I place an order for SF47GHR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF47GHR0G 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 SF47GHR0G reliable?
The price and inventory of SF47GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF47GHR0G is usually 5 days.
3.What payment methods are accepted for SF47GHR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF47GHR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF47GHR0G?
SF47GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF47GHR0G 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 SF47GHR0G?
For technical support, including SF47GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF47GHR0G requirements.
6.How does Aetrix verify that SF47GHR0G is sourced from the original manufacturer or authorized distributors?
All SF47GHR0G 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 SF47GHR0G meets industry standards.
7.What is the process for return or replacement of SF47GHR0G?
All SF47GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with SF47GHR0G, 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 SF47GHR0G part is unused and in its original packaging.
Return procedure for SF47GHR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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