Go to product viewer dialog for this item. (also written as STRF6267) is a high-performance, off-line switching regulator IC manufactured by Sanken Electric
. It is primarily designed for use in flyback converters within power supply circuits for consumer electronics. Alltronic Computer Singapore Key Specifications & Features Package Type
: 5-pin overmolded SIP (Single In-line Package), often referred to as a TO-3P style for isolation and thermal performance. Integrated Components
: Combines a power MOSFET with a current-mode PWM controller and frequency jittering circuitry. Efficiency : Capable of reaching up to 95% efficiency. Control Method
: Features off-line quasi-resonant flyback switching for reduced electromagnetic interference (EMI). Protections
: Includes built-in soft start, current limiting, thermal shutdown, and overvoltage protection. Alltronic Computer Singapore Common Applications
The STR-F6267 is frequently found in the primary power stages of: Television and VCR power regulators (e.g., JVC models). AC-DC adapters for laptops and mobile devices. LED drivers and battery chargers. Industrial power supplies and standby power systems. Alltronic Computer Singapore Datasheet and Resource Links
You can find updated technical documentation and pinout details at the following specialized repositories: Alldatasheet str f6267 datasheet pdf updated
: Provides various versions of the PDF datasheet, including related series like the STR-F6600.
: Offers a detailed summary of product attributes, features, and common usage. Veswin Electronics
: A source for availability, pricing, and technical support for older or hard-to-find components. or finding a specific circuit diagram for this IC? STR-F6267 Datasheet, PDF - ALLDATASHEET.COM STR-F6267 Datasheet, PDF - Alldatasheet. ALLDATASHEET.COM
is a high-performance, off-line switching regulator IC developed by Sanken Electric
. It integrates a power MOSFET and a current-mode PWM controller into a single 5-pin package (typically ZIP or TO-3P), designed for efficiency in power supply and motor control applications. Key Technical Specifications Device Type : SMPS Primary IC (Integrated Offline Switching Regulator). : 5-pin SIP or TO-3P. Efficiency : Capable of reaching up to 95%. Core Protection
: Built-in thermal shutdown, current limiting, soft start, and frequency jittering to reduce EMI. Operating Range
: Designed for high-heat environments with reliability up to 105 raised to the composed with power C Common Applications Power Supplies : AC/DC adapters and battery chargers. Consumer Electronics : Home appliances and TV power stages. : LED drivers. Industrial : RF signal amplification and power management systems. Quick Reference Post Manufacturer Integrated Parts Control IC + Power MOSFET Safety Features Overload (OCP), Over-voltage (OVP), Over-temperature (OTP) Equivalents STR-F6268, STR-F6264 (verify pinouts before replacement) Datasheet and Support Resources STR-F6267 | In Stock | Utsource Go to product viewer dialog for this item
* STR-F6267 is a high-performance off-line switching regulator IC made by Sanken. It is a 5-pin SIP package. Description: The STR- STR-F6267 SANKEN Discrete Semiconductors - Jotrin
Blog Title: Power Supply Repair Just Got Easier: The STR-F6267 Datasheet PDF Has Been Updated
Published: [Current Date]
Reading Time: 3 minutes
If you repair LCD TVs, power adapters, or industrial SMPS units, you are likely very familiar with the Sanken STR-F6267. This offline flyback regulator IC is a workhorse, but finding the correct and up-to-date technical documentation for it has always been a bit of a headache—until now.
We are happy to report that a revised and updated version of the STR-F6267 Datasheet (PDF) has just been released.
Here is what has changed in the new revision and why you need to download this version before your next repair job. Blog Title: Power Supply Repair Just Got Easier:
The STR-F6267 series are switched-mode power supply (SMPS) ICs widely used in low-power consumer electronics: chargers, DVD players, flat-panel TV auxiliary supplies, set-top boxes and small household appliances. A recent updated datasheet PDF (revision noted in the file name or header) typically bundles clarifications, corrected limits, and application guidance that matter to designers and repair technicians. Below I summarize the practical highlights you’ll want to read first, plus where to focus when adapting designs.
The original datasheets for the STR-F6267 have been circulating online for over a decade. Many of those scanned copies are blurry, missing the "Typical Application Circuit" page, or contain obsolete part numbers for external components (diodes, transformers).
The newly updated PDF (Rev. 3.1) addresses the following critical areas:
1. Accurate Overcurrent Protection (OCP) Graphs Previous versions had a vague curve regarding the "Detect Voltage" (Pin 3). The updated document provides precise threshold voltages (Vth) for the OCP pin across varying temperatures. This helps you stop nuisance tripping when the load is technically within spec.
2. Revised Start-Up Circuit Details Many repair technicians have been using the wrong value for the Vcc capacitor. The new datasheet clarifies the required Start-up current supply (max 100µA) and the recommended Vcc capacitance (47µF–100µF) to prevent "hiccup mode" during power-on.
3. Corrected Pinout Clarifications While the pinout hasn't physically changed (Pin 1: OCP/FB, Pin 2: Source, Pin 3: FB/OCP, Pin 4: Vcc, Pin 5: Drain), the new document adds high-resolution 3D renderings of the Full Mold Isolated Package. This eliminates confusion regarding heatsink mounting and isolation requirements.
Here is the "Cheat Sheet" data extracted from the fresh update:
The updated document clarifies which faults cause auto-restart vs latch-off. Overload (OLP) triggers auto-restart (1 second hiccup), while OVP on VCC triggers a full latch (requires AC power cycling).