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Taiwan Semiconductor Corporation SF61GH
- Part No.:
- SF61GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF61GH.pdf
- Description:
- DIODE GEN PURP 50V 6A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,249
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Product details
Overview
SF61GH from Taiwan Semiconductor is a 6A, 50V AEC-Q101-qualified super fast rectifier diode in DO-201AD package, featuring 0.975V forward voltage at 6A/25°C, 35ns reverse recovery time, and 150A surge current capability; used in automotive-grade DC-DC converters and freewheeling paths.
For engineers reviewing the SF61GH datasheet, SF61GH pinout, SF61GH application, or SF61GH equivalent, key selection criteria include its AEC-Q101 qualification, 50V VRRM rating, DO-201AD mechanical compatibility, low VF for thermal efficiency, and 35ns trr for high-frequency switching performance.
Technical Context
This super fast rectifier employs a single-die silicon PN junction optimized for minimal reverse recovery charge (Qrr) and low conduction loss. Its 35ns trr and 0.975V VF at rated current enable efficient operation in 100–500kHz switching topologies.
The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, with pure tin-plated leads compliant to J-STD-002. Junction-to-lead thermal resistance is 5°C/W, supporting sustained 6A conduction under controlled PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for blocking capability in 12V–48V automotive bus applications. |
| IF | 6 A - Continuous average forward current; defines steady-state power handling with appropriate heatsinking or PCB copper. |
| VF @ 6A, 25°C | 0.975 V - Forward voltage drop determining conduction loss (5.85W at 6A); directly impacts thermal design and efficiency. |
| trr | 35 ns - Reverse recovery time; enables use in high-frequency SMPS without excessive switching loss or EMI. |
| IFSM | 150 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and fault-current tolerance in power supplies. |
| RθJL | 5 °C/W - Junction-to-lead thermal resistance; allows direct thermal path to PCB pad or heatsink for reliable 6A operation. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test standard; required for under-hood and ADAS power modules. |
Pinout & Package
Package: DO-201AD - Axial leaded, molded plastic case with cathode band marking; 1.20g mass; UL 94V-0 rated compound; RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path); requires low-inductance layout for trr optimization. |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); cathode band must align with PCB silkscreen polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive temperature cycling, HTRB, and ESD stress-enables deployment in engine control units and body electronics. |
| 35 ns reverse recovery time | Reduces switching loss and EMI generation in 200–500 kHz DC-DC converters compared to standard fast rectifiers (>100 ns). |
| 0.975 V forward voltage @ 6A | Lowers conduction loss by ~15% versus comparable 50V rectifiers with VF > 1.1V, improving thermal margin in sealed enclosures. |
| 150 A IFSM surge rating | Withstands motor startup surges and load dump transients without failure-critical for 12V automotive auxiliary power rails. |
| DO-201AD with tin-plated leads | Ensures solder joint reliability per J-STD-002 and prevents whisker growth (JESD201 Class 2), supporting long-term field operation. |
Applications
| Automotive DC-DC Converter | Industrial SMPS Freewheel Diode |
|---|---|
Use Scenario: Step-down conversion from 12V battery to 3.3V/5V for infotainment microcontrollers and sensors. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology; conducts during low-side switch off-time. Use Value: 35ns trr minimizes dead-time losses and ringing; AEC-Q101 compliance ensures functional safety in ASIL-B systems. | Use Scenario: Output rectification in 24V input industrial AC-DC power supplies delivering 12V/5A to PLC I/O modules. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 6A load with transient peaks up to 150A. Use Value: 0.975V VF reduces heat sink size; DO-201AD axial form factor simplifies through-hole assembly on high-voltage isolation barriers. |
| LED Driver Flyback Snubber | UPS Inverter Bridge Clamp |
Use Scenario: Snubber diode across primary-side MOSFET in 48V-input LED driver for street lighting. IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off using fast recovery to absorb leakage inductance energy. Use Value: 50V VRRM matches typical 48V bus derating; 35ns trr prevents snap-off oscillation that could damage gate drivers. | Use Scenario: Anti-parallel clamp in three-phase IGBT inverter stage of online UPS systems. IC Role / Device Role / Timing Role: Provides bidirectional voltage clamping and freewheeling path during PWM commutation. Use Value: 150A IFSM withstands short-circuit current during grid fault conditions; RθJL = 5°C/W enables direct mounting to heatsink baseplate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH6L06S | 6A/600V, VF = 1.7V @ 6A, trr = 35ns, TO-220AC package | Higher voltage rating but higher VF; larger footprint and thermal mass | Select when 600V blocking is required and board space permits TO-220 mounting. |
| ON Semi MUR620E | 6A/200V, VF = 1.15V @ 6A, trr = 35ns, DO-201AD package | Same package and trr, but 200V VRRM and higher VF; no AEC-Q101 qualification | Acceptable for non-automotive 24V/48V SMPS where qualification is not mandated. |
Compared with STTH6L06S and MUR620E, SF61GH uniquely combines AEC-Q101 qualification, 50V VRRM optimization for low-voltage automotive rails, DO-201AD compatibility, and lowest VF (0.975V) in its voltage class-making it the preferred choice for space-constrained, thermally sensitive, and safety-certified designs.
Availability
SF61GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS freewheeling circuits, and LED driver snubber networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SF61GH 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 SF61GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive and harsh-environment industrial applications.
FAQ
What is the peak repetitive reverse voltage rating of SF61GH?
The SF61GH has a peak repetitive reverse voltage (VRRM) rating of 50 V. This value is specified in the Absolute Maximum Ratings table and defines the maximum reverse-biased voltage the device can block repeatedly without breakdown. It is intended for use in low-voltage DC-DC applications such as 12V and 24V automotive subsystems where precise voltage margining is critical. The SF61GH is not rated for voltages beyond 50 V.
Is SF61GH qualified to AEC-Q101 standards?
Yes, SF61GH is explicitly AEC-Q101 qualified, as confirmed by the "H" suffix in the ordering code and documented in the product revision G2105 datasheet. This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing per the AEC-Q101 standard, making SF61GH suitable for automotive power modules, body control units, and ADAS subsystems requiring validated reliability.
What is the forward voltage drop of SF61GH at 6A and 25°C?
The forward voltage drop (VF) of SF61GH is 0.975 V at 6 A and junction temperature of 25°C, as specified in the Electrical Specifications table under "Forward voltage(1)". This value is measured under pulsed conditions (PW = 0.3 ms) and represents the conduction loss baseline for thermal and efficiency calculations in buck or flyback converter designs using SF61GH.
Does SF61GH have a defined reverse recovery time?
Yes, SF61GH has a maximum reverse recovery time (trr) of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is listed in the Electrical Specifications table and confirms SF61GH's suitability for high-frequency switching applications up to 500 kHz. The 35 ns trr is consistent across the SF61G–SF68G family and enables low-loss operation in modern SMPS topologies.
What package type does SF61GH use, and what are its key mechanical features?
SF61GH uses the DO-201AD package: an axial-leaded, molded plastic case with cathode band polarity marking. Key mechanical features include UL 94V-0 flammability rating, pure tin-plated leads compliant to J-STD-002, JESD201 Class 2 whisker resistance, and approximate weight of 1.20 g. These attributes ensure robust manufacturability and long-term reliability in automated through-hole assembly lines.
SF61GH 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):
- 50 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 975 mV @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 100pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF61GH FAQ
1.How can I place an order for SF61GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF61GH 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 SF61GH reliable?
The price and inventory of SF61GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF61GH is usually 5 days.
3.What payment methods are accepted for SF61GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF61GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF61GH?
SF61GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF61GH 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 SF61GH?
For technical support, including SF61GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF61GH requirements.
6.How does Aetrix verify that SF61GH is sourced from the original manufacturer or authorized distributors?
All SF61GH 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 SF61GH meets industry standards.
7.What is the process for return or replacement of SF61GH?
All SF61GH units undergo pre-shipment inspection (PSI). If there is an issue with SF61GH, 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 SF61GH part is unused and in its original packaging.
Return procedure for SF61GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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