is a vintage N-channel dual-gate MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) primarily used in high-frequency applications like VHF/UHF radio amplification. Technical Overview Device Type: Dual-gate MOSFET (Silicon N-channel). Key Manufacturers: Originally produced by Application:
The 3SK41 represents a pivotal chapter in the history of consumer electronics: The Golden Age of RF: 3sk41 datasheet
(Note: A gate driver IC is essential to ensure the $V_GS$ threshold is met quickly to minimize switching losses in the linear region.) Low Noise: Optimized for high-frequency sensitivity
Allows for improved AGC (Automatic Gain Control) characteristics and lower cross-modulation. Low Noise: Optimized for high-frequency sensitivity. giving it a pedigree of reliability.
While modern surface-mount devices have largely taken over, the 3SK41 remains a staple for hobbyists and repair centers looking for authentic components for legacy industrial and commercial equipment. It was famously manufactured through collaborations involving giants like , giving it a pedigree of reliability. Quick Technical Summary Type N-Channel Dual-Gate MOSFET Package CAN4 (Metal Can) Common Uses Power amplifiers, motor control, SMPS Key Advantage High gain and low noise at high frequencies