Str F6267 Datasheet Pdf May 2026
The STR F6267 is a highly integrated, off-line switching power supply IC developed by Sanken Electric Co., Ltd. It belongs to the STR-F6200 series, which is specifically designed for flyback converter topologies in consumer electronics and industrial power supplies. For engineers, technicians, and hobbyists, accessing the official STR F6267 datasheet PDF is the first critical step toward understanding its electrical characteristics, thermal limits, and application circuits.
This article serves as a comprehensive reference, consolidating the key technical data you would find in the original STR F6267 datasheet PDF, including pin configuration, absolute maximum ratings, typical application schematics, and sourcing information.
If you are repairing a board where the STR-F6267 has failed (shorted internal MOSFET), consider the following:
Disclaimer: This technical brief is for educational and repair purposes. Always consult the official manufacturer datasheet for precise design parameters before implementation.
The STR-F6267 is a high-performance, off-line switching regulator integrated circuit (IC) manufactured by Sanken Electric Co., Ltd.. Primarily designed for use in Switch-Mode Power Supplies (SMPS), this 5-pin device integrates a power MOSFET and a controller IC into a single package, typically the TO-3P or ZIP-5 form factor. Key Technical Specifications
According to technical data from Utsource and Xecor, the STR-F6267 is engineered for efficiency and reliability in power conversion.
Integrated Components: Includes a power MOSFET, a current-mode PWM controller, and a frequency jittering circuit to minimize EMI.
Operating Modes: Specifically optimized for off-line quasi-resonant flyback switching.
Efficiency: Capable of achieving high efficiency, with some benchmarks reaching up to 95%.
Temperature Rating: Certain models are rated to operate reliably at temperatures up to 105°C. Pin Configuration and Functions
The 5-pin configuration simplifies PCB layout compared to discrete designs.
Pin 1 (D/ST): Drain/Startup terminal for the MOSFET and startup signal input. Pin 2 (S/OCP): Source/Overcurrent Protection terminal. Pin 3 (GND): Ground terminal. Pin 4 (VCC): Power supply terminal for the control circuit.
Pin 5 (FB): Feedback terminal for constant voltage control signals. Core Features and Protections str f6267 datasheet pdf
The STR-F6267 incorporates several built-in protection mechanisms to safeguard electronic systems:
Over-Voltage Protection (OVP): Monitors input voltage to prevent component failure.
Over-Current Protection (OCP): Limits output current to safe levels.
Thermal Shutdown (OTP): Automatically shuts down the IC if it exceeds safe operating temperatures.
Soft Start: Gradually increases output voltage during startup to reduce component stress.
Frequency Jittering: Reduces electromagnetic interference (EMI) noise, aiding in regulatory compliance. Common Applications
Due to its robust power regulation, the STR-F6267 is widely used across consumer and industrial electronics:
Consumer Electronics: Historically prevalent in TV and VCR power regulator circuits (e.g., JVC units).
Power Adapters: AC/DC adapters and battery chargers for various peripherals.
Lighting: Utilized as a stable power source for LED drivers.
Industrial Equipment: Applied in motor drivers and general-purpose power supply units. STRF6267 Sk | | Xecor
The STR-F6267 is an integrated circuit (IC) manufactured by Sanken Electric Co. It is primarily used as an off-line switching regulator in power supply circuits for consumer electronics like televisions and AC adapters. 📋 Technical Overview The STR F6267 is a highly integrated, off-line
The STR-F6267 is a 5-pin SIP (Single In-line Package) module that combines several critical components into one chip to simplify power supply design: Power MOSFET: Handles high-voltage switching.
Current Mode PWM Controller: Regulates output power precisely.
Built-in Protection: Includes thermal shutdown, overcurrent protection, and soft-start functionality to prevent damage during power-up.
Efficiency: Capable of reaching up to 95% efficiency, which reduces heat and saves energy. ⭐ Expert Review & Performance
This IC is widely regarded as a "workhorse" component for mid-range power applications.
Reliability: It is known for its robust protection suite. The thermal shutdown is particularly effective at preventing the IC from burning out during heavy loads or poor ventilation.
Ease of Use: Because it integrates the MOSFET and PWM controller, it significantly reduces the number of external components needed on a PCB, lowering production costs.
Quiet Operation: Features a built-in frequency jittering circuit that helps reduce electromagnetic interference (EMI) noise, making it easier for products to pass regulatory standards.
Availability: While common in older hardware, it is often treated as an "obsolete" or "hard-to-find" part by modern distributors, though it is still widely available from specialty suppliers like Jotrin Electronics or Veswin. ⚠️ Common Use Cases
Televisions: Often found in the primary stage of CRT or early LCD power boards. Adapters: Used in high-wattage AC/DC power bricks.
Industrial: Found in some small-scale motor drivers and battery chargers.
💡 Key Takeaway: If you are repairing an older device or designing a simple, cost-effective power supply, the STR-F6267 is a solid choice due to its high efficiency and minimal external component requirements. STR-F6267 | In Stock | Utsource If you are repairing a board where the
is a high-performance off-line switching regulator IC manufactured by
. It is designed to simplify the construction of efficient flyback converters by integrating a power MOSFET and a controller into a single 5-pin SIP/ZIP package. Jotrin Electronics Core Review & Features
is highly regarded for its integration, which significantly reduces the component count and PCB footprint for power supply designs High Efficiency : It can achieve efficiency levels up to , minimizing heat generation and energy loss. Integrated Power MOSFET
: Combines a robust power transistor with a current-mode PWM controller. EMI Reduction : Features a built-in frequency jittering circuit
that spreads the energy of switching noise, helping devices meet electromagnetic interference standards more easily. Protective Suite : Includes comprehensive safety features such as: Thermal shutdown Current limit and soft start Overvoltage protection (OVP) Jotrin Electronics Common Applications
This IC is versatile and typically found in small-to-medium power conversion devices: Jotrin Electronics Consumer Electronics : AC-DC adapters for laptops and mobile devices. Industrial Equipment : Reliable power sources for machinery and control units.
: LED driver power supplies requiring stable, efficient current. Standby Systems : Minimizing idle energy consumption in home appliances. Datasheet Resources
You can find the full technical specifications, pinout diagrams, and application circuits on major repository sites: ALLDATASHEET
: Provides multiple versions of the original Sanken technical manual.
: Offers quick-reference attributes and stock information for this specific part. Veswin Electronics
: Includes details on pinout, manual, and potential equivalent/cross-reference parts. parts for the or look into a specific schematic design STR-F6267 Datasheet, PDF - ALLDATASHEET.COM STR-F6267 Datasheet, PDF - Datasheet Search Engine. ALLDATASHEET.COM
STR-F6267 SANKEN Discrete Semiconductors - Jotrin Electronics
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