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Taiwan Semiconductor Corporation SFT11GHA1G
- Part No.:
- SFT11GHA1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
SFT11GHA1G.pdf
- Description:
- DIODE GEN PURP 50V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:2,051
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Product details
Overview
SFT11GHA1G from Taiwan Semiconductor is a 1 A, 50 V AEC-Q101-qualified super fast rectifier diode in TS-1 package, featuring 0.95 V forward voltage at 1 A and 35 ns reverse recovery time, used in automotive DC-DC converters and freewheeling paths.
For engineers reviewing the SFT11GHA1G datasheet, SFT11GHA1G pinout, SFT11GHA1G application, or SFT11GHA1G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), surge current rating (30 A), junction-to-ambient thermal resistance (100 °C/W), AEC-Q101 qualification status, and TS-1 package compatibility with automated assembly.
Technical Context
This super fast rectifier employs a single-die silicon PN junction optimized for high-speed switching in automotive-grade power conversion. Its 35 ns trr and low VF enable reduced conduction and switching losses in high-frequency topologies.
The TS-1 package provides robust thermal performance (RθJA = 100 °C/W) and meets JESD201 Class 2 whisker resistance, while the cathode band marking ensures unambiguous polarity identification during PCB placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 1 A - continuous forward current rating defines maximum steady-state power handling capability |
| VRRM | 50 V - peak reverse blocking voltage determines maximum circuit voltage margin before breakdown |
| IFSM (8.3 ms) | 30 A - non-repetitive surge current capacity supports inrush and fault transient resilience |
| VF @ 1 A, 25°C | 0.95 V - low forward drop reduces conduction loss and improves efficiency in 12 V automotive systems |
| trr | 35 ns - fast recovery minimizes reverse recovery charge and switching loss in >100 kHz converters |
| TJ max | +150 °C - extended junction temperature range enables operation in under-hood environments |
| RθJA | 100 °C/W - thermal resistance value informs heatsinking requirements for ambient temperatures up to +85 °C |
Pinout & Package
TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode indicated by molded band; lead-free pure tin plating compliant with J-STD-002 solderability standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of switching node; must withstand full load current and surge transients |
| Cathode | Forward current exit point / reverse voltage blocking terminal | Marked by visible band; connects to higher-potential rail; blocks 50 V reverse bias during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power supplies |
| Super fast recovery (35 ns) | Enables use in high-frequency (>200 kHz) synchronous rectification and flyback designs without excessive ringing |
| Low VF (0.95 V @ 1 A) | Reduces power dissipation by ~15% vs. standard fast rectifiers in 12 V input DC-DC stages |
| TS-1 package with JESD201 Class 2 whisker resistance | Ensures long-term reliability in vibration-prone automotive modules and eliminates tin whisker risk in humid environments |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global automotive environmental compliance mandates for end-of-life recycling and manufacturing safety |
Applications
| Automotive DC-DC Converters | Switching Mode Inverters |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 3.3 V/5 V for infotainment microcontrollers and sensors. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter output stage, conducting during low-side switch off-time. Use Value: 35 ns trr and 0.95 V VF minimize switching loss and thermal rise, enabling compact heatsinkless design in space-constrained modules. | Use Scenario: Bidirectional energy transfer in 48 V mild-hybrid vehicle inverters. IC Role / Device Role / Timing Role: Output rectifier in half-bridge inverter leg, clamping reactive energy during dead-time intervals. Use Value: 30 A IFSM rating handles motor regeneration surges; AEC-Q101 qualification ensures lifetime reliability under repeated thermal cycling. |
| Freewheeling in Solenoid Drivers | Industrial SMPS Auxiliary Supplies |
Use Scenario: Protection of MOSFET switches driving fuel injectors or transmission solenoids. IC Role / Device Role / Timing Role: Clamp diode across inductive load, dissipating stored magnetic energy when driver turns off. Use Value: Fast 35 ns recovery prevents voltage overshoot beyond 50 V rating, avoiding MOSFET avalanche stress and EMI generation. | Use Scenario: Auxiliary 5 V supply for PLC I/O isolation and communication ICs powered from 24 V industrial bus. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback transformer output, delivering regulated low-power bias rails. Use Value: TS-1 package enables high-density layout; 100 °C/W RθJA allows natural convection cooling without forced airflow in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1.7 V VF @ 1 A, TO-277A package | Higher voltage rating suits 48 V+ systems; higher VF increases conduction loss in 12 V designs | Select only if system requires >50 V reverse blocking or existing layout accommodates TO-277A footprint |
| ON Semi MUR105 | 50 V VRRM, 1.15 V VF @ 1 A, DO-41 package | Same VRRM but higher VF and through-hole mounting; lacks AEC-Q101 qualification | Acceptable for cost-sensitive non-automotive 12 V supplies where TS-1 SMT is not required |
Compared with STTH1L06S and MUR105, SFT11GHA1G uniquely combines 50 V rating, 0.95 V VF, AEC-Q101 qualification, and TS-1 SMT packaging-making it optimal for space-constrained, thermally demanding automotive DC-DC stages where efficiency and reliability are prioritized over voltage headroom.
Availability
SFT11GHA1G is available at Aetrix Electronics and suitable for automotive DC-DC converters, solenoid driver protection circuits, and industrial auxiliary power supplies requiring stable component supply and AEC-Q101 compliance.
Supply support for SFT11GHA1G 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 automotive, industrial, and consumer markets since 1979.
The SFT11G–SFT18G super fast rectifier family targets high-efficiency, high-reliability power conversion in automotive electronics, emphasizing AEC-Q101 qualification, low VF, and fast trr for next-generation 12 V/48 V hybrid architectures.
FAQ
What is the peak repetitive reverse voltage rating for SFT11GHA1G?
The SFT11GHA1G has a repetitive peak reverse voltage (VRRM) rating of 50 V. This value defines the maximum instantaneous reverse voltage the device can block repeatedly without breakdown. It is critical for ensuring safe operation in 12 V automotive systems where transient spikes may reach up to 40 V, leaving 10 V design margin. The SFT11GHA1G datasheet confirms this rating under standard test conditions at TA = 25°C.
Is SFT11GHA1G qualified for automotive applications?
Yes, SFT11GHA1G is AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and solderability-specifically validating its suitability for under-hood and cabin electronics. The SFT11GHA1G data sheet Version J2104 explicitly lists AEC-Q101 qualification among its features, distinguishing it from non-H variants like SFT11G.
What is the forward voltage drop of SFT11GHA1G at rated current?
The SFT11GHA1G exhibits a typical forward voltage (VF) of 0.95 V at 1 A and 25°C junction temperature. This low VF directly reduces conduction losses in power stages-especially beneficial in 12 V automotive DC-DC converters where even 0.1 V reduction lowers power dissipation by 100 mW per device. The datasheet specifies this value under pulse test conditions (PW = 0.3 ms) to avoid self-heating effects.
What package type does SFT11GHA1G use and what are its key mechanical attributes?
SFT11GHA1G uses the TS-1 surface-mount package, characterized by pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and cathode polarity marked by a visible band. Its weight is approximately 0.200 g, and it passes JESD201 Class 2 whisker testing-ensuring long-term reliability in automotive vibration and humidity environments. The TS-1 footprint is optimized for high-density PCB layouts and reflow soldering.
How does the reverse recovery time of SFT11GHA1G impact switching performance?
The SFT11GHA1G has a maximum reverse recovery time (trr) of 35 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This fast recovery minimizes reverse recovery charge (Qrr), reducing switching losses and voltage overshoot in high-frequency converters (>100 kHz). In buck or flyback topologies, this enables tighter dead-time control and lower EMI compared to standard fast rectifiers with trr > 50 ns.
SFT11GHA1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
SFT11GHA1G FAQ
1.How can I place an order for SFT11GHA1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFT11GHA1G 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 SFT11GHA1G reliable?
The price and inventory of SFT11GHA1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFT11GHA1G is usually 5 days.
3.What payment methods are accepted for SFT11GHA1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFT11GHA1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFT11GHA1G?
SFT11GHA1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFT11GHA1G 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 SFT11GHA1G?
For technical support, including SFT11GHA1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFT11GHA1G requirements.
6.How does Aetrix verify that SFT11GHA1G is sourced from the original manufacturer or authorized distributors?
All SFT11GHA1G 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 SFT11GHA1G meets industry standards.
7.What is the process for return or replacement of SFT11GHA1G?
All SFT11GHA1G units undergo pre-shipment inspection (PSI). If there is an issue with SFT11GHA1G, 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 SFT11GHA1G part is unused and in its original packaging.
Return procedure for SFT11GHA1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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