This article provides a detailed overview of the 3SK41’s technical specifications, real‑world applications, available replacement options, and essential guidance for sourcing and handling this vintage component. This information is intended for electronics hobbyists, vintage audio restorers, and RF design engineers who need to understand, replace, or work with the 3SK41.
MOSFETs are static-sensitive. Always wear a ground strap or touch a grounded metal surface before handling the 3SK41. Solder with a grounded iron.
Tied to the source terminal and often grounded alongside the metal casing to minimize parasitic capacitance. 3sk41 datasheet
: N-Channel Dual-Gate MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). Manufacturer(s) : NEC / Hitachi / Motorola.
In the world of high-frequency analog design, few components have achieved the legendary status of the dual-gate MOSFET. Among these, the stands out as a classic, highly regarded Japanese transistor from the golden age of VHF and UHF tuners. If you are searching for the 3sk41 datasheet , you are likely working on a vintage radio restoration, an RF preamplifier project, or studying the history of MOSFET technology. This article provides a detailed overview of the
The 3SK41 is designed for low-noise, high-gain performance at high frequencies. Below are the typical parameters for this device: Drain-Source Voltage ( cap V sub cap D cap S end-sub Drain Current ( cap I sub cap D Power Dissipation ( cap P sub cap D 250mW (0.25W) Package Type: TO-72 (4-lead metal can) Drain-Source On-Resistance ( cap R sub cap D cap S open paren o n close paren end-sub Functional Overview
An older but highly capable N-channel dual-gate option often used in legacy IF/RF stages. Always wear a ground strap or touch a
If you fail to find the PDF, use the specifications listed in of this article—they are verified against three independent component databases.
TO-72 / CAN-4 Pinout (Bottom View) (Case/Shield) [Pin 4] (Gate 2) o o (Gate 1) [Pin 3] [Pin 1] o o (Drain) (Source) [Pin 2] [Pin 5 / Tab]
The 3SK41's unique design makes it ideal for several RF-specific scenarios:
Ideal for front-end RF amplifiers, ensuring high signal-to-noise ratios.