Source terminal of the internal MOSFET. Connected to the primary ground via a current-sensing resistor. Ground terminal for the internal control circuitry. Pin 4
The output voltage on the secondary side is monitored by a shunt regulator (like a TL431) and sent back across the isolation barrier via an optocoupler. This optocoupler dictates the current flowing into Pin 5 (FB) , adjusting the MOSFET's on-time to maintain a steady output voltage. 5. Equivalent and Replacement ICs
The Sanken STR-F6267 is a powerful and efficient solution for offline switching power supplies, especially in quasi-resonant designs. Its high level of integration, combining a power MOSFET, control logic, and protection features, allows for reliable and compact power supply units.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. str f6267 datasheet pdf
Engineers diagnosing or sourcing the component must prioritize specific peak stress parameters to avoid physical damage during power spikes:
The STR-F6267 datasheet outlines several critical attributes that make it a robust choice for power conversion:
(Note: Certain vendor footprint variations list basic layouts under standard 5-pin configuration systems for simplified ZIP processing). Key Electrical Parameters Source terminal of the internal MOSFET
Based on repair datasheets and real-world service manuals:
This component is primarily found in . It functions as a high-voltage power switch and controller, integrating a power MOSFET and a control IC into a single package.
Minimizes component stress during power-up sequence. 2. Pin Configuration and Functions Pin 4 The output voltage on the secondary
Whether you need a cross-reference part available from a .
| Parameter | Symbol | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | | | | | | | 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 |
Performance tradeoffs and equivalents