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Taiwan Semiconductor Corporation SF22G R0G
- Part No.:
- SF22G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF22G R0G.pdf
- Description:
- DIODE GEN PURP 100V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,421
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Product details
Overview
SF22G from Taiwan Semiconductor is a 2 A, 100 V super fast rectifier diode in DO-204AC (DO-15) package, featuring 35 ns reverse recovery time, 0.95 V forward voltage at 2 A and 25°C, and 50 A surge current capability. It serves as a freewheeling or output rectifier in switching-mode power supplies for industrial DC-DC converters.
For engineers reviewing the SF22G datasheet, SF22G pinout, SF22G application, or SF22G equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, low VF for reduced conduction loss, AEC-Q101 qualification option (SF22GH), thermal resistance of 65°C/W, and compatibility with lead-free reflow soldering per J-STD-002.
Technical Context
The SF22G employs a glass-passivated silicon junction to achieve high reliability and low leakage. Its super fast recovery (trr ≤ 35 ns) enables efficient operation in high-frequency switching topologies up to several hundred kHz.
Designed for single-die configuration in axial-leaded DO-204AC, it delivers 2 A average forward current with junction temperature rated from –55°C to +150°C and supports surge currents up to 50 A (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or buck output stages |
| IF(AV) | 2 A - Continuous forward current rating; determines heatsink requirements in 24 V/48 V DC-DC outputs |
| trr | ≤35 ns - Reverse recovery time; minimizes switching loss and EMI in 100–500 kHz SMPS designs |
| VF @ 2A, 25°C | 0.95 V - Forward voltage drop; contributes ~1.9 W conduction loss at full load |
| RθJA | 65 °C/W - Junction-to-ambient thermal resistance; requires ≤45°C ambient for 150°C max junction temp at full load |
| IFSM | 50 A - Non-repetitive surge rating; withstands inrush during cold start or short-circuit events |
| IR @ 100 V, 25°C | ≤5 µA - Reverse leakage; ensures minimal standby power loss in always-on power rails |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, epoxy-molded, cathode indicated by band. Weight ≈ 0.400 g. RoHS-compliant, halogen-free, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck, transformer secondary in flyback) |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; blocks reverse voltage up to 100 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances moisture resistance and long-term reliability under thermal cycling and humid environments |
| Super fast recovery (trr ≤ 35 ns) | Reduces switching losses and improves efficiency in high-frequency converters (>100 kHz) |
| AEC-Q101 qualified variant available (SF22GH) | Validated for automotive under-hood applications including engine control and ADAS power modules |
| Pure tin-plated leads | Enables compatibility with Pb-free reflow processes and eliminates whisker risk per JESD 201 Class 2 |
Applications
| Industrial DC-DC Converters | Automotive Power Modules |
|---|---|
Use Scenario: 24 V input to 5 V/3.3 V isolated DC-DC converter in programmable logic controllers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 0.95 V VF and 35 ns trr reduce total power loss by >15% vs. standard fast recovery diodes at 250 kHz switching. | Use Scenario: 12 V battery-fed buck converter supplying radar sensor electronics in ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in high-side switch-based buck regulator. Use Value: AEC-Q101-qualified variant (SF22GH) ensures operation across –40°C to +125°C ambient with <5 µA leakage at 125°C. |
| Switched-Mode Inverters | LED Driver Power Supplies |
Use Scenario: Auxiliary power supply in 3-phase motor drive inverters converting DC bus to 15 V control rail. IC Role / Device Role / Timing Role: Secondary-side rectifier in auxiliary flyback transformer. Use Value: 50 A IFSM rating handles startup surges without derating; DO-15 package fits compact PCB layouts near transformer. | Use Scenario: Constant-current LED driver for commercial signage using offline AC-DC + DC-DC architecture. IC Role / Device Role / Timing Role: Output rectifier in primary-side regulated flyback stage. Use Value: Low VF minimizes heat generation in enclosed fixtures; halogen-free, RoHS-compliant construction meets IEC 62471 safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R010DJF | 100 V, 2 A, trr = 30 ns, VF = 0.92 V, SOD-123FL package (surface-mount) | Requires PCB redesign for SMD layout; no axial-leaded footprint compatibility | Preferred where board space is constrained and automated assembly is used |
| ON Semi MUR210E | 100 V, 2 A, trr = 35 ns, VF = 0.93 V, DO-204AC package, non-AEC-Q101 | Same axial package and pinout; lacks automotive qualification and halogen-free compliance | Cost-sensitive industrial use where AEC-Q101 and halogen-free are not required |
Compared with STTH2R010DJF and MUR210E, the SF22G offers identical DO-204AC mechanical fit and AEC-Q101 qualification (in GH variant), while delivering competitive VF and trr-making it optimal for drop-in replacement in legacy axial designs requiring automotive-grade reliability.
Availability
SF22G is available at Aetrix Electronics and suitable for industrial DC-DC converters, automotive power modules, and switched-mode inverters requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SF22G 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 SF2xG series was developed specifically for high-efficiency, high-reliability rectification in switching power supplies-emphasizing low VF, fast recovery, and robust thermal performance in standard axial packages.
FAQ
What is the maximum junction temperature rating for SF22G?
The SF22G has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when paired with appropriate thermal design. Derating curves in the SF22G datasheet confirm 2 A average current is sustainable up to 100°C ambient with standard DO-15 mounting.
Is SF22G pin-compatible with other devices in the SF2xG family?
Yes, all SF2xG devices-including SF21G, SF22G, SF23F through SF28G-share identical DO-204AC (DO-15) package dimensions, lead spacing, and polarity marking (cathode band). This enables direct mechanical replacement across voltage grades without PCB changes, though electrical parameters like VRRM and VF differ per variant.
Does SF22G meet automotive qualification standards?
The base SF22G is not AEC-Q101 qualified, but the SF22GH variant is explicitly qualified per AEC-Q101 Rev D. The "H" suffix denotes automotive-grade screening, including extended temperature cycling, high-temperature operating life, and biased HAST testing. Designers requiring automotive use must specify SF22GH-not SF22G-for compliance.
What is the typical reverse recovery time (trr) of SF22G and how is it measured?
The SF22G has a maximum reverse recovery time (trr) of 35 ns, tested under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC standards. This value is confirmed in the Electrical Specifications table and supported by Fig.6 test circuit diagram in the SF22G datasheet. It reflects performance at room temperature and remains stable up to TJ = 125°C.
How does the forward voltage (VF) of SF22G vary with temperature and current?
The SF22G exhibits a typical VF of 0.95 V at IF = 2 A and TJ = 25°C, decreasing slightly with rising temperature due to negative temperature coefficient of silicon PN junctions. At TJ = 125°C, VF drops to approximately 0.82 V. Full VF vs. IF and VF vs. TJ curves are provided in Fig.4 of the SF22G datasheet for precise thermal modeling.
SF22G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF22G R0G FAQ
1.How can I place an order for SF22G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF22G 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 SF22G R0G reliable?
The price and inventory of SF22G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF22G R0G is usually 5 days.
3.What payment methods are accepted for SF22G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF22G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF22G R0G?
SF22G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF22G 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 SF22G R0G?
For technical support, including SF22G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF22G R0G requirements.
6.How does Aetrix verify that SF22G R0G is sourced from the original manufacturer or authorized distributors?
All SF22G 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 SF22G R0G meets industry standards.
7.What is the process for return or replacement of SF22G R0G?
All SF22G R0G units undergo pre-shipment inspection (PSI). If there is an issue with SF22G 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 SF22G R0G part is unused and in its original packaging.
Return procedure for SF22G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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