[ DC Power Bus (up to 400V) ] | | +----+----+ | D | | | [Gate]----| G 3SK | Driver | | IC | S | +----+----+ | +-----> [ Load (Motor/Lamp) ] | GND
). For the 3SK41, this sits around 10 to 18 mS (millisiemens). High transconductance directly correlates to the high gain capability of the FET. Input Capacitance ( Cisscap C sub i s s end-sub
While this article consolidates the critical information, some users need the original scanned document.
Based on the technical specifications found in a typical (a N-channel MOSFET used in switching applications), I have developed a specific application feature.
Since the 3SK41 is no longer in mass production, hobbyists and repair technicians often look for replacements. While no modern part is a 100% mechanical match, the following are often used in similar circuits: A very close relative often used interchangeably. 3sk41 datasheet
The foundation of any datasheet is the component's electrical limits. While a complete official datasheet is no longer publicly available, key parameters have been meticulously compiled from reliable, cross-referenced sources.
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. 3SK41 NEC/HITACHI/MOTOROLA IC Chips | Censtry
The "dual-gate" design is the defining feature of the 3SK41, allowing it to excel in two specific areas:
A high-performance surface-mount (SOT-143) alternative, though it requires a different PCB layout. [ DC Power Bus (up to 400V) ]
I can help narrow down the exact matching pinouts or source further pin configuration schematics. Share public link
| Equivalent / Replacement | Type / Package | Key Considerations & Guidance | | :--- | :--- | :--- | | | N-Channel Dual-Gate MOSFET | Common TV tuner ICs; pinout differs, may require board modification; BF998 offers superior noise figure | | 3N201, 3N211 | N-Channel Dual-Gate MOSFET | Popular, common replacements in vintage gear; verify pinout and adapt if necessary | | 3SK40, 3SK45, 3SK48 | N-Channel Dual-Gate MOSFET | Near-identical specs; some tuner servicing guides report success with direct substitution of 3SK48 for 3SK41 | | NTE454 | N-Channel Dual-Gate MOSFET | Modern universal replacement; widely available, but confirm pin compatibility before use | | KP382A (Russian) | N-Channel Dual-Gate MOSFET | Potential replacement from Russian electronics; verify pin configuration matches your circuit |
VGS(off)cap V sub cap G cap S open paren o f f close paren end-sub ) : 4.0V maximum. Package Design & Pinout Configuration
in commercial avionics and vintage ham radios. Input Capacitance ( Cisscap C sub i s
When reviewing the 3SK41 datasheet, the absolute maximum ratings are critical to prevent component failure. Operating beyond these limits can cause permanent damage. Drain-Source Voltage Gate 1-Source Voltage Gate 2-Source Voltage Drain Current Total Power Dissipation Storage Temperature -55 to +150 3. Electrical Characteristics Under typical operating conditions (usually at ), the 3SK41 exhibits the following performance: Forward Transfer Admittance (
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. Go to product viewer dialog for this item. 1 Pcs - 3sk41 "original" Nec Mosfet N-chanel Tested
While the metal CAN-4 package provides robust protection against thermal stress, the 3SK41 is exceptionally sensitive to . Because it uses ultra-thin insulated metal-oxide gates, a tiny static spark can permanently rupture the internal barriers.