European standard dual-gate layout; excellent low-noise characteristics.
: Contains detailed information on pinouts, circuit diagrams, and equivalent components.
: Offers factory information and application notes for brands like NEC, Hitachi, and Motorola. 3SK41 - NEC/HITACHI/MOTOROLA - Jotrin
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:
If you are looking to replace or integrate this component into a design, let me know:
: This allowed for better control and gain, making it ideal for RF (radio frequency) amplification. Fast Switching : Its low
(metal can) package, which provides excellent shielding for RF stability. High Gain & Low Noise
The reveals a component that was far ahead of its time. With its 20V breakdown, 200mW dissipation, and 3dB noise figure, it enabled affordable, high-performance VHF radios for decades. While you shouldn't use it in a new mass-production design, understanding the 3SK41 is essential for restoring classic Sony, Kenwood, and Icom receivers.
The is a legacy N-channel dual-gate MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) primarily designed for high-frequency applications, such as VHF (Very High Frequency) amplifiers and mixers in radio and television tuners. Core Specifications
). 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
The dual-gate construction reduces the internal capacitance between the drain and the input gate, which improves stability and prevents unwanted oscillations at high frequencies. Typical Pinout (TO-72 Style)
The 3SK41 was a popular choice for the RF amplifier stage in the FM tuner sections of high-fidelity receivers. Its low-noise figure and high gain made it ideal for capturing weak FM signals.
made it incredibly efficient for power management in compact designs.