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Taiwan Semiconductor Corporation SF48GH
- Part No.:
- SF48GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF48GH.pdf
- Description:
- DIODE GEN PURP 600V 4A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
SF48GH from Taiwan Semiconductor is a 4A, 600V super fast rectifier diode in DO-201AD package, designed for high-efficiency DC-DC converters and switching inverters. It delivers low forward voltage (1.7 V at 4 A, 25°C), ultra-fast reverse recovery (≤35 ns), and high surge capability (125 A, 8.3 ms), enabling compact, thermally efficient power stages in automotive-grade systems.
For engineers reviewing the SF48GH datasheet, SF48GH pinout, SF48GH application, or SF48GH equivalent, key selection criteria include its AEC-Q101 qualification, 600 V repetitive peak reverse voltage, 1.7 V forward drop at rated current, 35 ns trr, and DO-201AD mechanical compatibility with high-reliability industrial and automotive power supplies.
Technical Context
This single-die silicon rectifier operates as a unidirectional switch in flyback, boost, and freewheeling paths. Its 35 ns reverse recovery time and 80 pF junction capacitance at 1 MHz/4 V support high-frequency (>100 kHz) switching topologies while minimizing switching losses and EMI generation.
The device sustains 125 A non-repetitive surge current and maintains stable operation across –55°C to +150°C junction temperature range. Thermal resistance of 25°C/W (junction-to-ambient) enables direct PCB-mount thermal management without heatsinks in moderate-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating margin in 400–500 V DC bus applications. |
| IF | 4 A - Continuous average forward current; supports sustained conduction in 50–100 W power stages. |
| VF @ 4 A, 25°C | 1.7 V - Forward voltage drop; determines conduction loss (6.8 W at full load) and thermal design baseline. |
| trr | ≤35 ns - Reverse recovery time; enables use in >200 kHz SMPS without excessive switching loss or ringing. |
| IFSM | 125 A - Peak non-repetitive surge current; withstands inrush and fault transients in motor drives and UPS systems. |
| RθJA | 25 °C/W - Junction-to-ambient thermal resistance; allows ~1.6 W dissipation at ΔT = 40°C ambient rise on standard FR-4. |
| CJ @ 1 MHz | 80 pF - Junction capacitance; limits capacitive turn-on loss and high-frequency noise coupling in gate-drive circuits. |
Pinout & Package
Package: DO-201AD - Axial leaded, molded plastic case with cathode band marking; UL 94V-0 rated, pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., switch node in boost, source in synchronous rectification). |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive, DC bus); polarity critical for correct rectification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements (HTOL, TC, HAST, UHST), enabling use in engine control and ADAS power modules. |
| Super fast recovery (trr ≤35 ns) | Reduces switching loss and EMI in high-frequency converters, supporting >200 kHz operation without snubber networks. |
| Low VF (1.7 V @ 4 A) | Minimizes conduction loss and thermal load in space-constrained 48 V–400 V systems, improving efficiency by ~0.8% vs. standard FR diodes. |
| High IFSM (125 A) | Survives cold-start surges and short-circuit events in industrial motor drives and solar microinverters without degradation. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives, supporting green manufacturing and end-of-life compliance for global OEMs. |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: 12 V to 48 V bidirectional DC-DC conversion in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost stage, conducting during low-side switch off-time. Use Value: AEC-Q101 qualification and 150°C max junction temperature ensure reliability under under-hood thermal cycling and vibration. | Use Scenario: Output rectification in 3 kW industrial servo drive inverters. IC Role / Device Role / Timing Role: Unidirectional current path in IGBT-based inverter output stage, clamping reactive energy during PWM dead-time. Use Value: 35 ns trr prevents shoot-through risk and reduces voltage overshoot, enabling tighter dead-time margins and higher efficiency. |
| Solar Microinverter Front-End | Telecom Power Supply Rectification |
Use Scenario: MPPT-stage output rectification in single-phase grid-tied microinverters. IC Role / Device Role / Timing Role: High-voltage output diode in interleaved flyback or LLC resonant converter secondary side. Use Value: 600 V VRRM provides 2× safety margin over 300 V DC link, while 80 pF CJ minimizes capacitive coupling into sensitive feedback circuitry. | Use Scenario: Primary-side clamp and secondary-side rectification in 48 V telecom rectifiers. IC Role / Device Role / Timing Role: Snubber diode in active clamp forward topology and freewheeling path in synchronous rectified outputs. Use Value: Low 1.7 V VF reduces conduction loss in high-duty-cycle telecom systems, improving overall system efficiency above 94%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R06DJF | Same DO-201AD package, 4 A/600 V rating, but trr = 50 ns (vs. 35 ns); VF = 1.75 V @ 4 A. | Higher trr increases switching loss in >150 kHz designs; suitable for cost-sensitive industrial SMPS where speed is secondary. | Select when AEC-Q101 is not required and 15 ns slower recovery is acceptable for thermal budget. |
| ON Semiconductor MUR460E | DO-201AD, 4 A/600 V, trr = 60 ns, VF = 1.85 V @ 4 A; not AEC-Q101 qualified. | Lacks automotive qualification and has higher VF/trr; best suited for commercial-grade AC-DC adapters and LED drivers. | Choose only for non-automotive applications where qualification and ultra-low loss are not mandatory. |
Compared with STTH4R06DJF and MUR460E, the SF48GH offers the fastest recovery (35 ns), lowest VF among 600 V 4 A super fast rectifiers, and unique AEC-Q101 qualification-making it the preferred choice for thermally constrained, high-frequency automotive and industrial power stages requiring long-term reliability.
Availability
SF48GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switch-mode inverters, and solar microinverter front-end designs requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance across production volumes.
Supply support for SF48GH 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The SF48GH belongs to TSC's SF4xG super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive-grade and industrial-grade switching power supplies.
FAQ
What is the maximum junction temperature rating for the SF48GH?
The SF48GH has a maximum junction temperature (TJ MAX) of +150°C, validated across its full operating range from –55°C to +150°C. This rating supports deployment in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 100°C. The SF48GH maintains specified electrical parameters-including VF and trr-within this full range, ensuring predictable performance in thermally aggressive applications.
Is the SF48GH pin-compatible with other devices in the SF4xG series?
Yes, the SF48GH shares identical DO-201AD package dimensions, axial lead configuration, and cathode-band polarity marking with all SF41G–SF47G variants. All members use the same mechanical footprint and soldering profile. However, electrical ratings differ-especially VRRM (600 V for SF48GH vs. 50–500 V for others) and VF (1.7 V for SF48GH vs. 1.0–1.3 V for lower-voltage variants)-so substitution requires verification of voltage and loss requirements.
Does the SF48GH require a heatsink in typical 4 A applications?
In standard PCB-mounted configurations with 1 oz copper and minimal copper area, the SF48GH dissipates up to 6.8 W (at 4 A × 1.7 V). With RθJA = 25°C/W, this yields ~170°C junction rise above ambient-exceeding the 150°C limit. Therefore, a heatsink or enhanced copper pour (≥2 in² 2 oz copper) is required for continuous 4 A operation at TA ≥ 25°C. Derating to 2.5 A enables operation without external heatsinking in most industrial layouts.
What does the "H" suffix in SF48GH signify?
Per Taiwan Semiconductor's ordering nomenclature, the "H" suffix in SF48GH explicitly denotes AEC-Q101 qualification. This means the device has undergone full stress testing-including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST)-and meets automotive reliability standards for discrete semiconductors. Non-H variants (e.g., SF48G) lack this qualification and are intended for commercial/industrial use only.
How does the SF48GH's junction capacitance affect high-frequency design?
The SF48GH exhibits 80 pF junction capacitance at 1 MHz and 4 V reverse bias. This value directly impacts turn-on loss, EMI generation, and gate-drive interaction in high-speed topologies. In a 200 kHz LLC resonant converter, this capacitance contributes ~1.6 mW of capacitive switching loss per cycle. Designers must account for it in snubber sizing and layout isolation-especially near sensitive analog feedback paths-to avoid noise coupling and stability issues in the SF48GH-based power stage.
SF48GH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF48GH FAQ
1.How can I place an order for SF48GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF48GH 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 SF48GH reliable?
The price and inventory of SF48GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF48GH is usually 5 days.
3.What payment methods are accepted for SF48GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF48GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF48GH?
SF48GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF48GH 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 SF48GH?
For technical support, including SF48GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF48GH requirements.
6.How does Aetrix verify that SF48GH is sourced from the original manufacturer or authorized distributors?
All SF48GH 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 SF48GH meets industry standards.
7.What is the process for return or replacement of SF48GH?
All SF48GH units undergo pre-shipment inspection (PSI). If there is an issue with SF48GH, 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 SF48GH part is unused and in its original packaging.
Return procedure for SF48GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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