The STR-F6267 is a reliable, if older, power supply IC. It is ideal for repairing classic CRT TVs, DVD power supplies, and industrial flyback converters from the 2000s. For new designs, use a modern IC like the STR-A6000 series or TOP26x family (higher efficiency, lower standby power). If you are repairing equipment, check the VCC capacitor and snubber diode first – they cause 70% of failures.
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
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.
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. str f6267 datasheet pdf
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 a high-performance, off-line switching regulator IC developed by Sanken Electric. Designed specifically for Switched Mode Power Supplies (SMPS), it integrates a power MOSFET and a current-mode PWM controller into a single, compact 5-pin package. Key Technical Specifications
The STR-F6267 datasheet outlines several critical attributes that make it a robust choice for power conversion:
Integrated Power MOSFET: Combines the high-voltage switching transistor and control circuitry to reduce external component count.
High Efficiency: Capable of achieving efficiency levels up to 95%.
Operating Temperature: Reliable performance in high-heat environments up to
EMI Management: Features a built-in frequency jittering circuit to minimize electromagnetic interference.
Package Type: Available in a TO-3P (5-pin) or ZIP-5 package, designed for easy heat sink mounting. Comprehensive Protection Features
To ensure the longevity of both the IC and the connected electronics, the STR-F6267 includes several internal safety mechanisms:
Soft Start Circuit: Prevents high inrush current during startup.
Current Limit Circuit: Protects against overcurrent conditions.
Thermal Shutdown: Automatically powers down the device if internal temperatures exceed safe limits. Common Applications
Due to its efficient power regulation and compact design, this IC is widely used in various consumer and industrial products:
Televisions: Frequently found in the power supply stage of CRT and modern display units.
AC-DC Adapters: Used in chargers for laptops and mobile devices.
LED Drivers: Provides stable, regulated power for LED lamps and fixtures.
Home Appliances: Integrated into power modules for various household electronics. Pinout and Installation
The STR-F6267 pinout is critical for correct integration. While specific pin roles can vary by application, they generally include: Drain: Connection to the transformer primary. Source: Ground or current sensing point. VCC: Power supply input for the control IC. Feedback (FB): Used for output voltage regulation.
Synchronization/Soft Start: Controls the timing of the switching cycle. Replacement and Equivalents
If you are searching for an alternative to the STR-F6267, several similar parts from the Sanken STR-F series may be compatible depending on the voltage and current requirements of your circuit: STR-F6268 STR-F6264 STR-F6256 STR-F6238
For those performing repairs, distributors such as Utsource or Veswin Electronics typically provide the full PDF datasheet and current pricing for original Sanken modules.
The STR-F6267 is a high-performance, off-line switching regulator IC manufactured by Sanken Electric. It is specifically designed for use in Switch-Mode Power Supplies (SMPS) to provide efficient and reliable power regulation for various electronic applications. General Specifications Manufacturer: Sanken Electric
Package Type: Available in 5-pin SIP (Single In-line Package) or ZIP packages, often identified in TO-3P style moldings.
Primary Function: SMPS Primary IC / Off-line switching regulator.
Integrated Components: Combines a power MOSFET and a current-mode PWM controller within a single package. Key Features High Efficiency: Capable of achieving efficiency up to 95%.
Low Noise: Features built-in frequency jittering to reduce EMI (Electromagnetic Interference). The STR-F6267 is a reliable, if older, power supply IC
Comprehensive Protection: Includes internal circuits for thermal shutdown, current limiting, and general protection to enhance reliability.
Startup Control: Equipped with a soft-start circuit to minimize component stress during initial power-up. Typical Applications The STR-F6267 is commonly found in: AC/DC adapters and battery chargers. LED and motor drivers.
Standard switching power supply circuits for consumer electronics. Technical Documentation & Resources
For detailed pinout voltages, schematic diagrams, and cross-references, you can access technical support and PDF downloads through distributors like Veswin Electronics or Jotrin Electronics. STR-F6267 Datasheet, PDF - ALLDATASHEET.COM
Understanding the STR-F6267: A Key Component for Power Supply Design
The STR-F6267 is a high-performance, integrated off-line switching regulator IC designed primarily for efficient and reliable power regulation. Manufactured by Sanken Electric, this 5-pin SIP (Single In-line Package) module is a staple in modern power supply units (SMPS) due to its high level of integration. Core Functionality and Features
The STR-F6267 simplifies circuit design by combining a power MOSFET and a current mode PWM controller into a single package. This integration reduces the overall component count on the PCB, which in turn lowers manufacturing costs and saves board space. Key technical features include:
High Efficiency: Capable of achieving efficiency rates up to 95%, minimizing power loss and improving thermal performance.
Built-in Protection: It features comprehensive safety mechanisms, including: Over-Voltage Protection (OVP) Over-Current Protection (OCP) Over-Temperature Protection (OTP)
Low EMI Noise: Includes a frequency jittering circuit specifically designed to reduce electromagnetic interference (EMI).
Robust Thermal Design: Operates reliably in high-heat environments, with some models rated up to 105°C. Common Applications
Due to its versatility and efficiency, the STR-F6267 is frequently found in a variety of electronic devices:
Consumer Electronics: Primarily used in television power supplies and home appliances.
Power Adapters: Ideal for AC/DC adapters and battery chargers.
Industrial Equipment: Used in power supply circuits that require stable and reliable power delivery.
Lighting: Frequently utilized in LED drivers and lighting power supplies. Finding Technical Documentation
If you are looking for the official STR-F6267 datasheet PDF, it provides essential details such as pinout configurations, application notes, and full electrical specifications. You can find detailed technical data and downloads through major semiconductor distributors and databases like ALLDATASHEET or Jotrin Electronics.
For replacement or repair needs, the STR-F6267 is part of a broader series that includes similar models like the STR-F6268 and STR-F6256, though always verify pin compatibility and electrical ratings before substituting. STRF6267 INTEGRATED CIRCUIT STR-F6267 F6267 - Nikkoe
Sanken STR-F6267 is an integrated circuit (IC) designed specifically for off-line quasi-resonant flyback switching regulators
. It combines a high-voltage power MOSFET and a controller in a single package to provide stable and efficient power regulation for applications like TVs and VCRs. Key Features & Functionality Quasi-Resonant Topology
: Operates as a quasi-resonant flyback converter, which helps achieve high efficiency (up to 95%) and significantly lower EMI noise compared to standard PWM solutions. Integrated Power MOSFET
: Includes a built-in power MOSFET and a current-mode controller in one 5-pin package, reducing external component count. Advanced Control
: Features a frequency jittering circuit to further minimize EMI and a feedback mechanism for precise voltage regulation. Soft Start Functionality
: Ensures a gradual and controlled power-up sequence to prevent excessive stress on components during start-up. Built-in Protections Over-Current Protection (OCP)
: Uses cycle-by-cycle current limiting to protect against output overloads. Thermal Shutdown (TSD)
: Automatically shuts down the IC if internal temperatures exceed safe operating limits. Under-Voltage Lock-Out (UVLO) Finding the exact "STR-F6267" datasheet can sometimes be
: Prevents the IC from operating at insufficient supply voltages, ensuring reliable startup and shutdown cycles. Technical Specifications Description Manufacturer Sanken Electric Package Type 5-pin SIP / TO-3P Primary Application Off-line SMPS (Switching Mode Power Supplies) Core Functions Switching regulator, current mode controller Efficiency Common Applications Color TV and VCR power supplies. AC/DC adapters and battery chargers. LED and motor drivers. Alltronic Computer Singapore For a full technical analysis, you can view the STR-F6267 Datasheet AllDatasheet Jotrin Electronics or a specific pinout diagram for this IC?
STR-F6267 SANKEN Discrete Semiconductors - Jotrin Electronics
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 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
Q: Can I replace STR F6267 with STR F6263? A: No, unless you recalculate the primary current limit. The F6263 has a lower drain current rating (3.5A) and higher RDS(on). Always consult both datasheets.
Q: Is the STR F6267 datasheet PDF available in Chinese/Japanese? A: Yes, Sanken provides datasheets in Japanese and often in English. Some aggregated sites offer translation notes.
Q: What is the difference between STR-F6267 and STR-F6267H? A: The "H" variant typically has a lower RDS(on) and higher efficiency. Do not interchange without comparing the full datasheet.
Q: Can I use the STR F6267 for a 150W power supply? A: Not recommended. The maximum continuous drain current is 5.5A. For 150W (e.g., 19V/7.9A), the primary peak current would exceed safe margins. Consider STR-F6600 series.
Finding the exact "STR-F6267" datasheet can sometimes be difficult because Sanken often groups components under series datasheets.
How to find the PDF:
| Parameter | Symbol | Min | Typ | Max | Unit | |-----------|--------|-----|-----|-----|------| | VCC Start-up Voltage | VCC(on) | 14.5 | 15.5 | 16.5 | V | | VCC Shutdown (Under-voltage lockout) | VCC(off) | 8.5 | 9.5 | 10.5 | V | | Operating Current (Normal) | ICC(ON) | - | 3.5 | 5.5 | mA | | Operating Current (Burst mode) | ICC(Burst) | - | 0.9 | - | mA | | Maximum Duty Cycle | Dmax | 70 | 75 | 80 | % | | Oscillation Frequency | fosc | 60 | 67 | 74 | kHz |
Because search engines sometimes surface outdated or fake datasheets, always obtain the STR F6267 datasheet PDF from reliable sources:
Warning: Avoid PDF hosting sites that require a CAPTCHA or ask for a credit card. The STR F6267 datasheet PDF is free for download from legitimate electronics component sites.
Understanding the pinout is critical for troubleshooting or replacing this IC. The standard configuration for the 5-pin package is:
Note: Pin numbering may vary slightly depending on the specific datasheet revision, but standard Sanken pinouts follow this logic.