: Improving receiver sensitivity by up to 6dB in some modifications.

Engineers and repair technicians looking for pricing, availability, and alternative replacements can find details across component networks like Jotrin Electronics and Veswin . Core Specifications and Absolute Maximum Ratings

| Parameter | Conditions | Value | | :--- | :--- | :--- | | | - | 5 pF | | On-State Resistance (RDS(on)) | - | 200 Ω |

In a typical RF amplifier stage, the Drain of the 3SK41 will be at a positive voltage (e.g., 12–14 V in many Kenwood transceivers), while the Source is near ground potential. A sudden loss of signal, a drop in gain, or excessive noise are often the first signs of a failing 3SK41 in vintage equipment.

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