The is a high-performance Silicon N-Channel Dual Gate MOSFET typically used in high-frequency (RF) and microwave applications. It is manufactured by companies including NEC, Hitachi, and Motorola and is often housed in a CAN-4 (similar to TO-72) metal package. Key Features & Applications:
Front-end amplification in FM, VHF, and UHF receivers.
The secondary control gate. Typically linked to an Automatic Gain Control (AGC) line or used as the local oscillator (LO) input terminal in mixing stages.
The 3SK41 utilizes a classic (frequently cross-referenced with the TO-72 form factor). The metal shell serves a dual purpose: it provides robust thermal dissipation and functions as a Faraday shield to decrease electromagnetic interference (EMI) when grounded. 3sk41 datasheet
Tied directly to the metallic can enclosure. Grounding this lead minimizes parasitic feedback from the drain back to Gate 1.
Sourced regularly as an exact OEM replacement part for 1970s and 1980s transceivers. Where to Source Data & Parts
VG1S(off)cap V sub cap G 1 cap S open paren o f f close paren end-sub The is a high-performance Silicon N-Channel Dual Gate
NOS (New Old Stock) 3SK41 transistors can occasionally be found on eBay and from specialized vintage component suppliers. The part is also listed on electronic component sourcing platforms like Utsource , though caution is advised, as counterfeit or remarked parts are common.
): The negative voltage required on Gate 2 to pinch off the channel. Typically ranges between -0.5V and -2.5V. AC / Dynamic Characteristics Also known as transconductance (
is a specialized silicon N-channel dual-gate MOSFET designed primarily for high-frequency radio frequency (RF) applications. It is widely used in tuning and amplification circuits for VHF and UHF signals. Key Technical Specifications The secondary control gate
If you are working on a project and cannot find a 3SK41, modern equivalents like the or older substitutes like the
The is a high-performance N-channel dual-gate MOSFET designed primarily for high-frequency RF applications, including VHF amplifiers and signal conversion. This legacy component, manufactured by industry giants like NEC , Hitachi, and Motorola, is renowned for its low noise figure and efficient power management in compact designs. Key Specifications & Technical Highlights