3sk41 Datasheet Jun 2026

Because the original 3SK41 is an obsolete part that can be difficult to source or expensive to purchase through legacy distributors like Littlediode , cross-referencing alternative part numbers is a common necessity. Depending on the circuit layout and performance parameters, the following parts serve as suitable substitutes: Component Part Number Package Type Key Structural Differences / Notes TO-72 / CAN-4

The 3SK41 is an primarily designed for VHF (Very High Frequency) amplification . All sources agree that it is a low-power, high-frequency device designed for the front-end stages of receivers. The consensus on its key absolute maximum ratings is as follows:

The 3SK41 has the following electrical characteristics: 3sk41 datasheet

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: Don't rely solely on large, generic parts distributors. Specialized vendors like RF Parts Company or CEI Distribution are often a better bet for obsolete RF transistors. Hobbyist-focused electronics suppliers, such as Nikko Electronics , also stock these components, typically priced around £12.99 per unit. Because the original 3SK41 is an obsolete part

The 3SK41’s four leads can be confusing for those who are accustomed to three‑terminal transistors. The typical pinout is:

In an RF amplifier stage, the weak antenna signal is fed into . A variable DC voltage from the receiver’s AGC circuit is applied to Gate 2 . By varying the Gate 2 voltage, the transconductance of the device changes, allowing smooth attenuation of strong signals without detuning the input resonant circuit connected to Gate 1. Low-Noise Mixing The consensus on its key absolute maximum ratings

To make sure you have the exact information needed, are you using this for a or to repair vintage equipment (like a Kenwood transceiver)? 3SK41 NEC/HITACHI/MOTOROLA CAN-4 Transistors

Thanks to a low on-resistance (