3sk41 Datasheet ~upd~ (2026 Edition)

Whether you need a for biasing the dual gates.

Although the 3SK41 is no longer in production, its legacy as a high-performance dual-gate MOSFET continues. This guide compiles the scattered but essential information from its unofficial datasheet, detailing its critical role and electrical specifications. As you work on vintage gear, use this resource to identify the device, understand its function, and find suitable modern equivalents for reliable repairs.

Instead of applying full voltage instantly (which causes high inrush current and mechanical stress), this feature gradually ramps up the voltage delivered to the load using Pulse Width Modulation (PWM).

(Note: A gate driver IC is essential to ensure the $V_GS$ threshold is met quickly to minimize switching losses in the linear region.)

If you are maintaining vintage communications gear, restoring old television tuners, or studying legacy RF design, understanding the 3SK41 datasheet is essential. This article breaks down its core specifications, pin configuration, and practical application parameters. 1. Key Features and Applications 3sk41 datasheet

: Provides various versions of the PDF datasheet from multiple manufacturers.

If you meant and can confirm that, I can provide typical characteristics (IDSS, Vgsoff, Yfs, Ciss) based on similar 3SK series devices, but an official manufacturer datasheet is not in my current knowledge base.

Highly compatible N-channel dual-gate alternative with matching gain characteristics.

| | Symbol | Value | Unit | Source | | :--- | :--- | :--- | :--- | :--- | | Output Capacitance | Coss | 5 | pF (picofarads) | | | Drain-Source On-State Resistance | RDS(on) | 200 | Ω (Ohms) | | | Drain-Source Cutoff Current (Idss) | Idss | > 4 | mA | | Whether you need a for biasing the dual gates

), engineers can easily adjust the amplifier's gain without affecting the input characteristics at the first gate ( G1cap G sub 1

The is a historically significant, high-performance N-channel dual-gate MOSFET designed primarily for high-frequency (RF) amplification, mixing, and switching applications . Jointly associated with major semiconductor manufacturers like NEC, Hitachi, and Motorola , this component has been a staple in communication equipment and sensitive analog circuits.

This article provides a detailed overview of the 3SK41’s technical specifications, real‑world applications, available replacement options, and essential guidance for sourcing and handling this vintage component. This information is intended for electronics hobbyists, vintage audio restorers, and RF design engineers who need to understand, replace, or work with the 3SK41.

: Typically supplied in a CAN-4 (TO-72) metal package, providing excellent shielding. As you work on vintage gear, use this

A common alternative used in similar VHF applications. Conclusion

Used in VCO (Voltage-Controlled Oscillator) and PLL (Phase-Locked Loop) circuits. Security & Signal Systems:

Operating the 3SK41 beyond these limits can cause permanent damage. Always design with a safety margin of at least 20-30% below these maximums. Drain-Source Voltage ( VDScap V sub cap D cap S end-sub

NOS (New Old Stock) 3SK41 transistors can occasionally be found on eBay and from specialized vintage component suppliers. The part is also listed on electronic component sourcing platforms like Utsource , though caution is advised, as counterfeit or remarked parts are common.

The signal output. It connects to the primary RF tank circuit or intermediate frequency (IF) transformer setup.