3sk41 Datasheet !!better!!
The 3SK40 is reported to have identical DC and RF specifications and is sometimes used as a direct substitute. The 3SK45 is also very similar, but slight differences in gain or capacitance may require minor circuit adjustments. The 3N201 (also known as MFE201 ) has been used successfully by hobbyists, but care is required when selecting a vendor to avoid counterfeit parts.
If you're restoring a vintage radio or building a high-fidelity RF front end, the 3SK41 datasheet is a must-read for its precise pinout and voltage ratings.
Sourced regularly as an exact OEM replacement part for 1970s and 1980s transceivers. Where to Source Data & Parts
VGS(off)cap V sub cap G cap S open paren o f f close paren end-sub ) : 4.0V maximum. Package Design & Pinout Configuration 3sk41 datasheet
: The dual-gate structure allows one gate to receive the RF signal and the other to receive the Local Oscillator (LO) signal, resulting in efficient mixing.
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Modern, highly popular surface-mount replacement; requires a breakout adapter for through-hole layouts. TO-72 / CAN-4 The 3SK40 is reported to have identical DC
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
Another excellent legacy RF/IF amplifier alternative that maintains high gain profiles across similar frequency bands.
| Parameter | Symbol | Value | Notes | | :--- | :--- | :--- | :--- | | | VDS | 20 V | | | Gate-Source Voltage | VGS | 7 V | | | Drain Current | ID | 25 mA | | | Power Dissipation | Pd | 250 mW | | | Junction Temperature | Tj | 175 °C | | | Package Type | - | TO-72 | Metal can package | | Type | - | N-Channel Dual Gate MOSFET | | If you're restoring a vintage radio or building
: High-frequency, low-noise N-channel MOSFETs (similar to 3SK41).
) and excellent high-frequency characteristics, the 3SK41 is not built for high-power conversion; instead, it thrives in precise signal environments:
The dual-gate structure of the 3SK41 offers specific advantages that single-gate transistors cannot match easily: 1. Superior AGC Performance