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Taiwan Semiconductor Corporation SF48G
- Part No.:
- SF48G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF48G.pdf
- Description:
- DIODE GEN PURP 600V 4A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,380
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Product details
Overview
SF48G from Taiwan Semiconductor is a 600V, 4A super fast rectifier diode in DO-201AD package, featuring 1.7V forward voltage at 4A and 35ns reverse recovery time, designed for high-efficiency DC-DC converters and switching inverters operating at elevated temperatures up to 150°C junction.
For engineers reviewing the SF48G datasheet, SF48G pinout, SF48G application, or SF48G equivalent, key selection criteria include peak reverse voltage rating (600V), surge current capability (125A), thermal resistance (25°C/W), and AEC-Q101 qualification status when specifying in automotive power supplies or industrial SMPS designs.
Technical Context
This single-die silicon rectifier uses planar epitaxial construction to achieve fast recovery (trr ≤ 35ns) with low stored charge, enabling high-frequency operation in hard-switched topologies. Its 600V VRRM rating supports 400VAC input rectification with margin, while the 125A IFSM withstands transient surges common in motor drive freewheeling paths.
The device operates across –55°C to +150°C junction range and exhibits 5µA reverse leakage at 25°C - critical for standby power loss control. Junction-to-ambient thermal resistance of 25°C/W enables reliable 4A continuous conduction in natural-convection PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports 400VAC input rectification with 1.5× safety margin |
| IF | 4 A - continuous forward current rating at TA = 75°C on FR-4 PCB |
| IFSM | 125 A - handles 8.3ms half-sine surge without degradation |
| VF @ 4A | 1.7 V - measured at TJ = 25°C; impacts conduction loss in high-duty-cycle apps |
| trr | 35 ns - enables operation up to ~3 MHz switching frequency before recovery losses dominate |
| RθJA | 25 °C/W - defines thermal derating slope: 4A max at 75°C ambient on standard layout |
| IR @ 25°C | 5 µA - low leakage preserves efficiency in high-impedance hold-up circuits |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated per J-STD-002, UL 94V-0 molded compound, 1.10g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or inductor return in flyback/freewheeling paths |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery (trr ≤ 35ns) | Reduces switching loss and EMI in >100 kHz SMPS designs |
| 600V repetitive peak reverse voltage | Enables use in 3-phase rectifiers and 400VDC bus systems |
| 125A non-repetitive surge rating | Survives inrush and fault currents in motor drive and UPS applications |
| AEC-Q101 qualified option available | Validated for automotive under-hood power conversion (SF48GH variant) |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental compliance mandates |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated 48V–600V output telecom PSUs. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side switch off-time. Use Value: 35ns trr minimizes reverse recovery loss, improving full-load efficiency by ~0.8% vs. standard fast rectifiers. | Use Scenario: DC link clamping and regenerative braking path in 3-phase motor drives. IC Role / Device Role / Timing Role: Bidirectional snubber or freewheeling path during PWM dead-time. Use Value: 125A IFSM sustains repeated regen surges without parameter shift over 10-year field life. |
| Industrial SMPS | Automotive Power Supplies |
Use Scenario: Input bridge rectification in 230VAC-fed industrial PLC power modules. IC Role / Device Role / Timing Role: Primary AC/DC conversion element handling 4A RMS input current. Use Value: 600V VRRM provides 2× margin over peak line voltage (325V), ensuring long-term reliability. | Use Scenario: On-board charger (OBC) auxiliary supply rectification in EVs. IC Role / Device Role / Timing Role: High-temp rectifier in 12V/24V bias rails exposed to under-hood ambient. Use Value: 150°C TJ max and AEC-Q101 qualification (SF48GH) support operation at 105°C ambient with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R06D | Same 600V/4A rating; VF = 1.75V @ 4A; trr = 30ns; TO-220AC package | Requires heatsink for 4A continuous; unsuitable for compact axial layouts | Select when higher surge margin (150A) and heatsink-mounting are acceptable |
| ES3J | 600V/3A; VF = 1.7V @ 3A; trr = 35ns; DO-204AL (SMA) package | Lower current rating limits use to <3A average loads; smaller footprint | Choose for space-constrained 3A designs where DO-201AD mechanical robustness is not required |
Compared with STTH4R06D and ES3J, the SF48G uniquely balances 4A current, 600V rating, axial DO-201AD form factor, and 35ns recovery in a single cost-effective package - making it optimal for mid-power industrial and automotive rectification where board space and thermal budget are constrained.
Availability
SF48G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial SMPS requiring stable component supply with consistent parametric performance across production lots.
Supply support for SF48G 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 automotive markets since 1979.
The SF48G belongs to TSC's SF-series super fast rectifier family, engineered specifically for high-frequency, high-reliability power conversion where low VF, fast trr, and robust surge handling are mandatory - especially in automotive-grade and industrial-grade power supplies.
FAQ
What is the maximum junction temperature rating for SF48G?
The SF48G has a maximum junction temperature (TJ MAX) of +150°C, verified per JEDEC test conditions. This allows sustained operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations. Derating begins above 75°C ambient on standard FR-4 PCBs due to its 25°C/W RθJA. The SF48G maintains specified electrical parameters within this full temperature range.
Does SF48G have AEC-Q101 qualification?
The base SF48G is not AEC-Q101 qualified; however, the SF48GH variant - identical in all electrical and thermal specifications - is fully AEC-Q101 qualified for automotive applications. Both share the same DO-201AD package, 600V VRRM, and 35ns trr. Customers requiring automotive grade must specify SF48GH, which carries the "H" suffix denoting qualification.
What is the forward voltage drop of SF48G at rated current?
The SF48G exhibits a typical forward voltage (VF) of 1.7 V at 4 A and 25°C junction temperature, as confirmed in the Electrical Specifications table. At 100°C junction, VF decreases slightly (~1.55 V) due to negative temperature coefficient. This value directly determines conduction loss: at 4A, power dissipation is ~6.8 W, requiring appropriate thermal design.
How does SF48G compare to SF47G in terms of voltage and VF?
The SF48G is rated for 600V VRRM and has VF = 1.7 V @ 4A, whereas SF47G is rated for 500V VRRM with identical VF. Both share the same trr (35ns), IFSM (125A), and package. The SF48G provides higher voltage margin for 400VAC systems and is the only variant in the SF4xG series supporting 600V applications - no other member reaches this rating.
What packaging options are available for SF48G?
SF48G is supplied in DO-201AD package with two standard packing formats: 1,250 units per tape-and-reel (SF48G) and 500 units per ammo box (SF48G A0G). Tape-and-reel is recommended for automated SMT placement; ammo box suits manual prototyping or low-volume assembly. Lead finish is pure tin, compliant with J-STD-002 solderability requirements.
SF48G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF48G FAQ
1.How can I place an order for SF48G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF48G 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 SF48G reliable?
The price and inventory of SF48G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF48G is usually 5 days.
3.What payment methods are accepted for SF48G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF48G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF48G?
SF48G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF48G 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 SF48G?
For technical support, including SF48G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF48G requirements.
6.How does Aetrix verify that SF48G is sourced from the original manufacturer or authorized distributors?
All SF48G 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 SF48G meets industry standards.
7.What is the process for return or replacement of SF48G?
All SF48G units undergo pre-shipment inspection (PSI). If there is an issue with SF48G, 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 SF48G part is unused and in its original packaging.
Return procedure for SF48G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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