(Note: If "str f6267" refers to a specific legacy audio component or a less common variant, the pinout may differ, but the STF6267 is the primary active component matching this part number).
Based on repair datasheets and real-world service manuals:
| Symptom | Likely Cause | Test Point | | :--- | :--- | :--- | | No output, VCC cycling 0V→15V→0V | Short on secondary or overload on FB pin | Check diodes, caps on output | | No output, VCC stuck <15V | Start-up resistor open or VCC cap dried out | Replace 100µF/50V cap | | Blows fuse, D-S shorted | Primary snubber failed or AC line surge | Check RCD snubber diode (FR107) | | Output present but ticking noise | Overload or faulty optocoupler | Isolate FB pin, check load | | Output high (overvoltage) | Feedback loop open (optocoupler or TL431 dead) | Immediate danger – will trigger OVP latch |
To obtain the complete, manufacturer-verified datasheet with graphs (thermal derating, frequency vs. temp, characteristic curves):
Disclaimer: The values in this report are typical from historical datasheets (circa 2005-2015). Always consult the latest official Sanken datasheet for your specific revision before designing or repairing any power supply.
is a high-performance, off-line switching regulator IC specifically designed for Quasi-Resonant Flyback converters. Manufactured by Sanken Electric
, this integrated circuit combines a high-voltage power MOSFET with a specialized controller into a single 5-pin SIP or TO-3P package. Jotrin Electronics Core Technical Profile Primary Function:
Regulates and controls off-line switching power supplies (SMPS) to provide stable and efficient DC power. Efficiency: Capable of reaching up to 95% efficiency through its quasi-resonant switching mode. Thermal Tolerance:
Designed for durability, operating reliably in environments up to Built-in Protections:
Features integrated safety mechanisms, including thermal shutdown, current limiting, and soft-start circuits to prevent component failure during power-up or overload conditions. Pin Configuration & Functions
Though typically found in a 5-pin configuration, the internal controller logic manages several critical tasks: Pin Number Description System ground connection. Power supply input for the internal control logic. Feedback input used to regulate the output voltage.
Current sense input to monitor and limit primary-side current. Connection to the high-voltage internal MOSFET's drain. Practical Applications
The STR-F6267 is a versatile component found in a variety of consumer and industrial electronics: AC/DC Adapters: Common in charging bricks for laptops and peripherals. Battery Chargers: Used in fast-charging systems for portable electronics. LED Drivers: Provides regulated power for high-intensity lighting. Motor Drivers: Integrated into low-to-medium power motor control circuits. Design & Troubleshooting Tips EMI Management: The IC includes a frequency jittering circuit
to reduce electromagnetic interference (EMI) noise, making it easier to meet regulatory standards. Thermal Management:
Because it handles high power in a compact package, adequate heat sinking is critical for long-term reliability. Equivalent Models: Depending on the power requirements of your circuit, the
are often listed as functional equivalents or alternatives for similar flyback designs. To help further, would you like a comparison of the STR-F6267 versus the STR-F6624 to see which fits your power budget better? STR-F6267 Datasheet, PDF - ALLDATASHEET.COM
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 str f6267 datasheet pdf
: 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
Here are concise, engaging content ideas and angles for a topic about "STR F6267 datasheet PDF" (assume it's a power IC / regulator). Use these as headings, summaries, or sections in an article, blog post, or social media thread.
If you want, I can:
Which deliverable would you like?
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 (Note: If "str f6267" refers to a specific
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
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) developed by Sanken Electric, designed primarily as an off-line switching regulator for Switched-Mode Power Supplies (SMPS). It combines a high-voltage power MOSFET and a control circuit into a single compact package, typically a 5-pin SIP (Single In-line Package) or TO-3P. Key Specifications & Features
This IC is engineered for high-efficiency power conversion, often reaching up to 95% efficiency.
Integrated Design: Houses both the switching element (MOSFET) and the PWM controller, which reduces total component count and simplifies PCB layout.
Frequency Jittering: Built-in circuitry to minimize Electromagnetic Interference (EMI) noise, a common challenge in switching power supplies. Go to Sanken Electric's official website
Comprehensive Protection: Includes built-in safety features like Thermal Shutdown (TSD), Over-Current Protection (OCP), and Over-Voltage Protection (OVP).
Soft Start: Ensures a gradual power-up sequence to prevent sudden current surges during startup. Pinout Configuration (5-Pin Package) Description GND Ground reference Vcc Power supply for the IC's internal logic FB Feedback pin for voltage regulation CS Current Sense input for over-current protection DRAIN Connected to the internal power MOSFET's drain
Note: Some references mention additional pins (up to 8) for specific variants or synchronization inputs, so always check your physical chip's configuration. Common Applications
The STR-F6267 is a popular choice for designers needing a compact and reliable power solution for:
Consumer Electronics: AC-DC adapters for monitors, TVs, and audio equipment.
Industrial Equipment: Power supplies for mechatronics and industrial control systems.
LED Drivers: Providing regulated power for lighting systems.
Battery Chargers: Efficiently converting AC mains to DC for charging mobile or portable devices. Datasheet Resources
You can find the detailed technical documentation on several electronics portals:
AllDatasheet provides standard PDF downloads for Sanken power ICs.
Ariat-Tech offers a direct datasheet PDF for the Sanken variant.
Utsource and Jotrin Electronics provide summarized parameters and functional descriptions. Are you planning to use this IC in a new design, or STR-F6267 - SANKEN - Jotrin Electronics
The STR-F6267 is ruggedized for harsh electrical environments. You will most commonly find this IC in:
When viewing the printed side (face) of the IC, pins are numbered from left to right.
| Pin | Name | Function Description | | :--- | :--- | :--- | | 1 | FB (Feedback) | Receives feedback current from the optocoupler. Controls duty cycle. | | 2 | S/OCP (Source) | Source pin for the internal MOSFET. Also senses current via an external resistor for overcurrent protection. | | 3 | VCC (Supply) | Power supply input for the control IC (typically 18V to 22V operating). | | 4 | D (Drain) | Drain pin of the built-in high-voltage MOSFET. Connects to the primary transformer winding. | | 5 | GND | Ground pin for the control circuit. (Note: Isolated from the MOSFET source internally). |
| Parameter | Symbol | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | MOSFET Section | | | | | | | Drain-Source Breakdown | ( V_DSS ) | 800 | - | - | V | | Static Drain-Source On-Resistance | ( R_DS(on) ) | - | 1.8 | 2.5 | ( \Omega ) | | Control Section | | | | | | | Oscillator Frequency | ( f_OSC ) | 60 | 66 | 72 | kHz | | Start-up Voltage | ( V_CC(ON) ) | 15.0 | 16.0 | 17.0 | V | | Shutdown (Stop) Voltage | ( V_CC(OFF) ) | 9.0 | 10.0 | 11.0 | V | | Operating Current (after start) | ( I_CC ) | - | 3.5 | 5.5 | mA | | FB Pin Open Voltage | ( V_FB(open) ) | - | 5.7 | - | V | | Overcurrent Detection Threshold | ( V_S/OCP ) | 0.65 | 0.72 | 0.79 | V |
The STF6267 is a single-channel high-side switch designed using STMicroelectronics’ proprietary VIPower™ M0-5 technology. It is engineered to drive incandescent lamps, LEDs, and resistive loads in automotive and industrial applications. The device integrates robust protection features and advanced diagnostics, making it ideal for modern body control modules (BCM) and lighting systems.