Because the 3SK41 is no longer in active mass production by original semiconductor giants, looking up active inventory or complete datasheet indexes requires targeting legacy electronic component distributors:
By varying the DC bias voltage applied to Gate 2, you can seamlessly control the overall gain of the amplifier stage without heavily detuning the input tank circuit attached to Gate 1. Common Applications
Finding an original 3SK41 can be challenging outside of specialized "New Old Stock" (NOS) electronics vendors like Jotrin Electronics , UTSOURCE , or LittleDiode. If you need a functional substitute for a repair or layout emulation, look into these common alternative components:
Designed to minimize internal noise, often cited as a reason for its use in balanced mixer stages.
This structural shielding eliminates the need for complex neutralization circuits, providing cleaner layouts for active RF designs. Key Applications & Use Cases Thanks to its low continuous current limits ( 3sk41 datasheet
Are you planning to use the 3SK41 for an project or a legacy repair ? 3SK41 Datasheet, PDF - ALLDATASHEET.COM
The classic application from the is a cascode-like RF amplifier. Unlike a single-gate MOSFET, Gate 2 acts as a shield and a gain control.
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
V(BR)GSScap V sub open paren cap B cap R close paren cap G cap S cap S end-sub ): 7.0 V 250 mW at Forward Transfer Admittance ( gfsg sub f s end-sub ): Minimum 8.0 mS (millisiemens) Maximum Input Capacitance ( Cisscap C sub i s s end-sub ): ~5.0 pF Package Type: CAN-4 (Metal-can style with 4 leads) Pinout Configuration Because the 3SK41 is no longer in active
Because the original 3SK41 is an obsolete part that can be difficult to source or expensive to purchase through legacy distributors like Littlediode , cross-referencing alternative part numbers is a common necessity. Depending on the circuit layout and performance parameters, the following parts serve as suitable substitutes: Component Part Number Package Type Key Structural Differences / Notes TO-72 / CAN-4
: Ideal for front-end receiver stages where sensitivity is critical. Applications VHF/UHF amplifiers.
If you are currently executing a repair or designing an emulation layout, let me know:
The 3SK41 is designed for high-performance RF stages. Below are the typical highlights found in its technical datasheet : N-Channel Dual-Gate MOSFET. : Typically housed in a This structural shielding eliminates the need for complex
However, I can guide you on how to find datasheets for electronic components:
The control or modulation input. This is typically used for AGC biasing or local oscillator (LO) injection in mixer circuits.
Because the 3SK41 is an older, often "obsolete" part, it is frequently sought after by hobbyists and engineers for repairing vintage radio gear. AliExpress Where to find : It is still stocked by specialized distributors like Jotrin Electronics Equivalents
Place high-quality ceramic bypass capacitors as close to the Source and Gate 2 pins as possible to prevent unwanted RF oscillations.
The 3SK41 has been obsolete for decades. You will likely need a replacement. Based on direct electrical comparison, here are the best :
When handling the 3SK41, it is essential to take precautions to prevent damage from electrostatic discharge (ESD). The transistor should be handled by the leads only, and not by the body. Additionally, the operating conditions should be within the specified limits to ensure reliable operation.