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Taiwan Semiconductor Corporation SF32G R0G
- Part No.:
- SF32G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF32G R0G.pdf
- Description:
- DIODE GEN PURP 100V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,742
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Product details
Overview
SF32G from Taiwan Semiconductor is a 3A, 100V super fast rectifier diode in DO-201AD package, featuring 0.95V forward voltage at 3A and 35ns reverse recovery time. It serves as a freewheeling or output rectifier in DC-DC converters and switching inverters where low conduction loss and fast switching are required.
For engineers reviewing the SF32G datasheet, SF32G pinout, SF32G application, or SF32G equivalent, key selection criteria include repetitive peak reverse voltage (100V), surge current rating (125A), junction-to-lead thermal resistance (10°C/W), and AEC-Q101 qualification availability for automotive-grade reliability validation.
Technical Context
The SF32G employs a single-die silicon PN junction optimized for super-fast recovery (trr ≤ 35ns) with low stored charge, enabling high-frequency operation in SMPS topologies. Its 100V VRRM rating and 3A average forward current support mid-voltage industrial and automotive auxiliary power supplies.
Thermal performance is defined by RθJL = 10°C/W and RθJC = 9°C/W, allowing direct lead-mount heat dissipation without heatsinks up to ~2.5W at TA = 75°C. The device uses pure tin-plated leads compliant with J-STD-002 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or boost output stages |
| IF(AV) | 3 A - Continuous forward current rating; determines minimum trace width and thermal pad area in PCB layout |
| IFSM | 125 A - Non-repetitive surge current capacity; supports inrush tolerance during power-up in converter designs |
| VF @ 3A | 0.95 V - Forward voltage drop at rated current; directly impacts conduction loss (Pcond ≈ 2.85W) |
| trr | 35 ns - Reverse recovery time; enables stable operation up to ~500 kHz switching frequency with minimal switching loss |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; allows estimation of junction temperature rise above lead temperature |
| CJ | 80 pF @ 4V - Junction capacitance; influences EMI generation and snubber design in high-dv/dt applications |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; body length 7.62 mm, diameter 2.72 mm, lead diameter 0.60 mm; RoHS-compliant, halogen-free molding compound (UL 94V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck, transformer secondary in flyback) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; polarity must match PCB silkscreen and schematic symbol |
Key Features
| Feature | Design Value |
|---|---|
| Super-fast recovery (trr ≤ 35 ns) | Enables efficient high-frequency SMPS operation while minimizing reverse recovery losses and associated EMI |
| Low VF (0.95 V @ 3A) | Reduces conduction loss by ~15% vs. standard fast rectifiers, improving thermal margin in compact power modules |
| AEC-Q101 qualified option available | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| DO-201AD with tin-plated leads | Ensures reliable solder wetting per J-STD-002 and eliminates tin whisker risk per JESD201 Class 2 |
| Junction temperature range (–55°C to +150°C) | Supports operation in extended ambient conditions typical of industrial motor drives and telecom power supplies |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12V/24V DC-DC converters for industrial PLCs and embedded controllers. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC; operates synchronously with PWM controller timing. Use Value: 0.95V VF minimizes power loss at 3A load, while 35ns trr prevents cross-conduction loss in synchronous rectifier-assisted designs. | Use Scenario: Freewheeling path across inductive loads (e.g., solenoids, relay coils) in 48V automotive inverters. IC Role / Device Role / Timing Role: Clamping diode providing low-impedance return path during MOSFET turn-off; critical for dv/dt control and voltage spike suppression. Use Value: 125A IFSM withstands inductive kick energy; 100V VRRM covers worst-case back-EMF in 48V systems with margin. |
| AC-DC Adapter Secondary Side | UPS Battery Charging Circuit |
Use Scenario: Output rectification in universal-input 100–240VAC adapters delivering 5–19V DC to consumer electronics. IC Role / Device Role / Timing Role: High-efficiency rectifier in bridge or center-tap configuration; conducts during positive half-cycles of high-frequency transformer output. Use Value: 80pF junction capacitance limits capacitive coupling noise; DO-201AD package fits standard through-hole footprints in cost-sensitive adapter PCBs. | Use Scenario: Reverse-polarity protection and charging path isolation in 24V/48V UPS battery management systems. IC Role / Device Role / Timing Role: Unidirectional current gate between charger IC and lead-acid/LiFePO4 battery; blocks reverse discharge during AC failure. Use Value: –55°C to +150°C TJ range ensures reliability across battery temperature extremes; 100V rating accommodates float voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | VRRM = 600V, VF = 1.15V @ 3A, trr = 30ns, TO-220AC package | Higher voltage rating but larger footprint and higher VF; suited for 400V+ PFC front-ends | Select when >200V reverse stress or heatsink mounting is required; not drop-in for DO-201AD layouts |
| ON Semi MUR320 | VRRM = 200V, VF = 0.92V @ 3A, trr = 35ns, DO-201AD package | Same package and trr, but higher VRRM and slightly lower VF; RoHS-compliant, non-AEC-Q101 | Direct footprint replacement with improved voltage margin; verify AEC-Q101 requirement before automotive use |
Compared with STTH3L06S and MUR320, the SF32G offers optimal balance of 100V rating, 0.95V VF, and DO-201AD compatibility for cost-sensitive 24–48V industrial converters-without requiring PCB redesign or thermal derating penalties.
Availability
SF32G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.
Supply support for SF32G 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, automotive, and consumer markets since 1979.
The SF3xG series is part of TSC's Super Fast Rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for SF32G?
The SF32G has a VRRM rating of 100 V, meaning it can reliably block up to 100 volts of reverse voltage in repetitive operation. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2105) and is validated across the full operating temperature range of –55°C to +150°C. Exceeding this voltage risks avalanche breakdown and permanent damage to the SF32G.
Is SF32G suitable for automotive applications?
The SF32G itself is not AEC-Q101 qualified, but the SF32GH variant (same electrical specs, marked with "H") is explicitly qualified per AEC-Q101. For automotive under-hood use, specify SF32GH to ensure compliance with stress tests including temperature cycling, humidity, and mechanical shock. The SF32G remains appropriate for non-automotive industrial or consumer applications where AEC-Q101 is not mandated.
What is the forward voltage drop of SF32G at its rated current?
The SF32G exhibits a typical forward voltage (VF) of 0.95 V at 3 A and 25°C junction temperature, as confirmed in the Electrical Specifications table of the Taiwan Semiconductor datasheet. This value increases to approximately 0.85 V at 125°C due to negative temperature coefficient behavior. The 0.95 V VF directly determines conduction loss (≈2.85 W at 3 A), making it critical for thermal design of the SF32G in continuous-duty applications.
Does SF32G have a specified reverse recovery time (trr)?
Yes, the SF32G has a maximum reverse recovery time (trr) of 35 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This ultra-fast recovery enables efficient operation in switching power supplies running at frequencies up to 500 kHz. The trr value is consistent across the SF31G–SF34G group and is verified via standardized test circuits shown in Figure 6 of the official datasheet.
What package type does SF32G use, and what are its key mechanical features?
The SF32G uses the DO-201AD axial-leaded package, with dimensions of 7.62 mm body length and 2.72 mm diameter. Key mechanical features include pure tin-plated leads (J-STD-002 solderable), UL 94V-0 flammability-rated molding compound, cathode band polarity marking, and compliance with JESD201 Class 2 whisker testing. Its 1.10 g weight and lead pitch support automated through-hole assembly and manual rework.
SF32G R0G 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):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 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
SF32G R0G FAQ
1.How can I place an order for SF32G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF32G R0G 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 SF32G R0G reliable?
The price and inventory of SF32G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF32G R0G is usually 5 days.
3.What payment methods are accepted for SF32G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF32G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF32G R0G?
SF32G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF32G R0G 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 SF32G R0G?
For technical support, including SF32G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF32G R0G requirements.
6.How does Aetrix verify that SF32G R0G is sourced from the original manufacturer or authorized distributors?
All SF32G R0G 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 SF32G R0G meets industry standards.
7.What is the process for return or replacement of SF32G R0G?
All SF32G R0G units undergo pre-shipment inspection (PSI). If there is an issue with SF32G R0G, 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 SF32G R0G part is unused and in its original packaging.
Return procedure for SF32G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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