Because the 3SK41 is a depletion-mode MOSFET, it is "normally on" with VGS=0V. A multimeter in diode mode will not test it properly. Here is how to test from the suggestions:
(drain-source on-resistance), which minimizes power dissipation and keeps your circuit running cooler.
) allows separate bias control. Users can feed a DC control voltage into G2cap G sub 2 to smoothly scale the transconductance ( gfsg sub f s end-sub
) and allows for AGC (Automatic Gain Control) voltage implementation directly on the second gate. According to historical manufacturing parameters from suppliers like Jotrin Electronics and Veswin , the primary limits and electrical behaviors include: 3sk41 datasheet
This circuit is ideal for FM radio (88-108 MHz) or aircraft band (118-136 MHz).
): The maximum continuous current allowed through the channel (usually in the range of 20mA to 50mA). Total heat dissipation capacity at room temperature ( 25∘C25 raised to the composed with power C ), typically around 100mW to 200mW. Storage & Operating Temperature: Usually rated from -55∘Cnegative 55 raised to the composed with power C +125∘Cpositive 125 raised to the composed with power C 4. Electrical and RF Characteristics
To help me provide more specific information, could you tell me: Because the 3SK41 is a depletion-mode MOSFET, it
A common alternative used in similar VHF applications. Conclusion
: Common modern substitutes with high transconductance and low noise for RF applications.
Typically utilized for AGC (Automatic Gain Control) voltage or local oscillator input in mixer circuits. ) allows separate bias control
Providing initial signal boost for weak radio waves.
The 3SK41 is a legacy N-channel dual-gate MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) primarily designed for VHF (Very High Frequency) applications. These components were staples in the design of high-sensitivity radio equipment, particularly as amplifiers and mixers. Because this part is largely discontinued or considered "vintage," finding modern documentation requires looking back at classic semiconductor standards. 🚀 Technical Specifications Overview
The is a classic N-channel dual-gate MOSFET primarily engineered by semiconductor pioneers like NEC , Hitachi, and Motorola. Encased in a rugged TO-72 (CAN-4) metal package , this specialized field-effect transistor is highly regarded for its low noise figure, fast switching capabilities, and dual-control configuration. This configuration makes it exceptionally well-suited for high-frequency radio frequency (RF) amplification, mixing, and automatic gain control (AGC) circuits.