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Taiwan Semiconductor Corporation SF28GH
- Part No.:
- SF28GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF28GH.pdf
- Description:
- DIODE GEN PURP 600V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,460
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Product details
Overview
SF28GH from Taiwan Semiconductor is a 2 A, 600 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 1.70 V max forward voltage at 2 A and 35 ns reverse recovery time. It delivers high surge current capability (50 A), low power loss, and AEC-Q101 qualification for automotive-grade reliability in DC-DC converters and switching inverters.
For engineers reviewing the SF28GH datasheet, SF28GH pinout, SF28GH application, or SF28GH equivalent, key selection criteria include peak reverse voltage (600 V), thermal resistance (RθJA = 65 °C/W), junction temperature range (–55 to +150 °C), and AEC-Q101 qualification status - all critical for high-reliability power conversion designs.
Technical Context
The SF28GH employs a glass-passivated single-die silicon junction optimized for fast switching in high-frequency switching mode power supplies. Its 35 ns reverse recovery time and 20 pF junction capacitance at 1 MHz/4 V enable efficient operation in 50–500 kHz converter topologies while minimizing switching losses.
Designed for surface-mount-compatible through-hole assembly, the device supports 50 A non-repetitive surge current (8.3 ms half-sine) and operates across –55 °C to +150 °C junction temperature, with RθJC = 16 °C/W enabling effective heat transfer to PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in high-voltage DC bus applications |
| IF | 2 A - Continuous average forward current; sets steady-state power handling capacity at TA = 25 °C |
| IFSM | 50 A - Peak non-repetitive surge current; supports transient overload tolerance during startup or fault conditions |
| VF (max) | 1.70 V @ 2 A, 25 °C - Forward conduction loss directly impacts efficiency and thermal design in high-current paths |
| trr | 35 ns - Reverse recovery time; determines minimum dead-time requirements and switching loss in synchronous rectification |
| CJ | 20 pF @ 1 MHz, 4 V - Junction capacitance affects high-frequency EMI and snubber design in resonant converters |
| RθJA | 65 °C/W - Thermal resistance from junction to ambient; used to calculate maximum allowable power dissipation on standard FR-4 PCB |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, glass-passivated, RoHS-compliant, halogen-free molding compound (UL 94V-0), pure tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side of circuit; polarity marked by absence of cathode band |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible cathode band; connected to higher-potential side or output node in freewheeling configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments |
| Low VF and trr | Reduces conduction and switching losses simultaneously - critical for >90% efficiency targets in compact SMPS |
| High IFSM/IF ratio (25:1) | Enables robustness against line surges and inrush currents without derating or oversized heatsinking |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated end equipment |
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 vehicle architectures. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or asymmetrical half-bridge topology. Use Value: AEC-Q101 qualification and 150 °C TJMAX ensure uninterrupted operation under engine bay thermal transients. | Use Scenario: Output stage rectification in 3 kW industrial UPS inverters operating at 100 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode in IGBT-based H-bridge output stage. Use Value: 35 ns trr minimizes cross-conduction loss and enables stable gate drive timing margins. |
| Server PSU Secondary Side | Renewable Energy Charge Controllers |
Use Scenario: +12 V and +54 V output rectification in 80 PLUS Titanium server power supplies. IC Role / Device Role / Timing Role: Secondary-side superfast rectifier replacing Schottky diodes where higher VRRM is required. Use Value: 600 V VRRM provides margin for reflected voltage spikes in LLC resonant converters. | Use Scenario: MPPT charge controller rectification in off-grid solar battery systems with 400 V PV string inputs. IC Role / Device Role / Timing Role: Input-stage isolation rectifier in dual-active-bridge isolated DC-DC stage. Use Value: 50 A IFSM withstands lightning-induced surge events per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R06 | Same 600 V VRRM, 2 A IF, but trr = 50 ns; RθJA = 70 °C/W; not AEC-Q101 qualified | Lacks automotive qualification; higher trr increases switching loss in >200 kHz designs | Select when AEC-Q101 is not required and cost sensitivity outweighs 15 ns trr penalty |
| ES2D | Lower VRRM (200 V); same IF and trr (35 ns); TO-220AC package; no AEC-Q101 | Not suitable for 400–600 V bus applications; requires different mounting and thermal interface | Use only in sub-200 V secondary-side rectification where DO-15 footprint is not mandatory |
Compared with STTH2R06 and ES2D, the SF28GH uniquely combines 600 V rating, 35 ns recovery, and AEC-Q101 qualification in a DO-15 package - making it the sole option for space-constrained, automotive-grade 600 V rectification where thermal resistance and surge robustness are jointly critical.
Availability
SF28GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switch-mode inverters, and renewable energy charge controllers requiring stable component supply, AEC-Q101 compliance, and consistent DO-15 packaging.
Supply support for SF28GH 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 global automotive, industrial, and computing markets since 1979.
The SF28GH belongs to TSC's SF2xG super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where fast recovery, high surge tolerance, and extended temperature operation are mandatory.
FAQ
What is the maximum junction temperature rating for SF28GH?
The SF28GH has a maximum junction temperature (TJMAX) of +150 °C and a minimum storage temperature of –55 °C. This wide operating range allows the SF28GH to function reliably in under-hood automotive environments and high-ambient industrial enclosures without derating below full 2 A current capacity at board-level temperatures up to 105 °C.
Is SF28GH pin-compatible with other SF2xG series devices?
Yes - all SF2xG devices, including SF28GH, share identical DO-204AC (DO-15) mechanical dimensions, lead spacing, and anode/cathode polarity marking. This enables direct substitution within the same voltage grade group (e.g., SF27G/SF28G) without PCB layout changes, provided thermal and electrical margins remain acceptable for the specific VRRM and VF values.
Does SF28GH meet automotive qualification standards?
Yes, the "H" suffix in SF28GH explicitly denotes AEC-Q101 qualification per Rev H2105 documentation. The device has undergone full stress testing including HTGB, HTRB, temperature cycling, and ESD per AEC-Q101-004, making SF28GH suitable for automotive powertrain and chassis applications where component reliability is mission-critical.
What is the typical forward voltage drop of SF28GH at rated current?
The SF28GH exhibits a maximum forward voltage (VF) of 1.70 V at 2 A and 25 °C junction temperature, with typical values lower depending on thermal conditions. At 125 °C, VF decreases slightly due to negative temperature coefficient, supporting stable performance across its full –55 °C to +150 °C operating range.
How does SF28GH compare to standard fast recovery diodes in switching loss?
With a guaranteed 35 ns reverse recovery time (trr) and 20 pF junction capacitance, the SF28GH reduces switching loss by up to 40% compared to standard fast recovery diodes (trr > 75 ns) in 100–300 kHz hard-switched converters. This directly improves system efficiency and eases thermal management in compact power supplies using the SF28GH.
SF28GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF28GH FAQ
1.How can I place an order for SF28GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF28GH 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 SF28GH reliable?
The price and inventory of SF28GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF28GH is usually 5 days.
3.What payment methods are accepted for SF28GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF28GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF28GH?
SF28GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF28GH 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 SF28GH?
For technical support, including SF28GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF28GH requirements.
6.How does Aetrix verify that SF28GH is sourced from the original manufacturer or authorized distributors?
All SF28GH 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 SF28GH meets industry standards.
7.What is the process for return or replacement of SF28GH?
All SF28GH units undergo pre-shipment inspection (PSI). If there is an issue with SF28GH, 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 SF28GH part is unused and in its original packaging.
Return procedure for SF28GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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