Because the 3SK41 is an older component, it can sometimes be difficult to source. If you cannot find an original, consider these common substitutes: Very similar characteristics, often interchangeable.
Historical datasheets provided two classic topologies: and AGC-controlled IF Amplifier .
A highly popular, widely available Silicon dual-gate MOSFET from NXP/Infineon. While it has different biasing characteristics because it is silicon-based rather than Gallium Arsenide, it serves a very similar functional purpose in VHF/UHF amplifier and mixer stages.
The is a classic, high-performance N-channel dual-gate Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) manufactured by prominent semiconductor pioneers such as NEC , Hitachi, and Motorola. Primarily packaged in a hermetically sealed metal TO-72 (CAN-4) enclosure , this device is legendary in legacy RF (Radio Frequency) engineering for its high switching speeds, exceptionally low power dissipation, and outstanding noise-performance balance. 3sk41 datasheet
| Parameter | Symbol | Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | VDS | 20 | V | | Gate 1 to Source Voltage | VG1S | ±15 | V | | Gate 2 to Source Voltage | VG2S | ±15 | V | | Drain Current | ID | 30 | mA | | Total Power Dissipation (Ta=25°C) | Ptot | 200 | mW | | Channel Temperature | Tch | 125 | °C | | Storage Temperature | Tstg | -40 to +125 | °C |
In the 1970s and 80s, components like the 3SK41 were the "brain" behind the clear signal reception of color televisions and high-fidelity FM radios. Obsolescence:
Are you planning to use the 3SK41 for an project or a legacy repair ? 3SK41 Datasheet, PDF - ALLDATASHEET.COM Because the 3SK41 is an older component, it
[ DC Power Bus (up to 400V) ] | | +----+----+ | D | | | [Gate]----| G 3SK | Driver | | IC | S | +----+----+ | +-----> [ Load (Motor/Lamp) ] | GND
Typically connected to the system ground or a self-biasing resistor network. The substrate is often tied to this lead to minimize RF feedback.
The is more than just a transistor; it is a snapshot of RF engineering history. Its datasheet reveals a device optimized for stable, high-gain, low-feedback operation in VHF television and radio applications – a true workhorse of its era. A highly popular, widely available Silicon dual-gate MOSFET
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Minimizes loading on preceding stages. 2. Technical Specifications (Absolute Maximum Ratings)
The 3SK41 was developed in the late 1970s and early 1980s by Japanese manufacturers like Hitachi, NEC, and Sanyo. It was famously used in the RF front-ends of high-end analog television tuners (Channels 1-12) and FM radio receivers.