3sk41 Datasheet Now
The 3SK41’s two gate terminals are its defining feature. In a typical dual‑gate MOSFET, is the input that receives the RF signal to be amplified, while Gate 2 is used for a control voltage. By varying the voltage on Gate 2, the circuit can adjust the transistor’s gain, a technique known as Automatic Gain Control (AGC) in receivers. This allowed radio designers to build simpler and more sensitive front‑ends for FM tuners without relying on variable attenuators or multi‑stage control loops.
Whether you are performing a vintage restoration, analyzing high-frequency communication circuits, or looking for equivalent contemporary options, understanding the exact specifications on a is vital to securing circuit stability and preventing system failure. Technical Specifications Overview
architecture. This provides two independent control points for the channel, offering several benefits: Automatic Gain Control (AGC):
V(BR)GSScap V sub open paren cap B cap R close paren cap G cap S cap S end-sub ): 7.0 V 250 mW at Forward Transfer Admittance ( gfsg sub f s end-sub ): Minimum 8.0 mS (millisiemens) Maximum Input Capacitance ( Cisscap C sub i s s end-sub ): ~5.0 pF Package Type: CAN-4 (Metal-can style with 4 leads) Pinout Configuration 3sk41 datasheet
European standard dual-gate layout; excellent low-noise characteristics.
The 3SK41 is designed for low-noise, high-gain performance at high frequencies. Below are the typical parameters for this device: Drain-Source Voltage ( cap V sub cap D cap S end-sub Drain Current ( cap I sub cap D Power Dissipation ( cap P sub cap D 250mW (0.25W) Package Type: TO-72 (4-lead metal can) Drain-Source On-Resistance ( cap R sub cap D cap S open paren o n close paren end-sub Functional Overview
Crucial for selecting and converting television and radio broadcast frequencies. Oscillators: The 3SK41’s two gate terminals are its defining feature
The second gate acts as a shield between the input gate and the drain, significantly reducing Miller effect capacitance. This provides better stability and higher gain at VHF frequencies. Automatic Gain Control (AGC):
: Provides significant amplification, especially in VHF bands.
If you are working on a specific design or repair,I can help you verify if a specific will function safely within your target circuit. Share public link This allowed radio designers to build simpler and
) of the transistor. This functionality is perfect for variable gain amplifiers and RF front-ends in communication receivers, helping prevent signal overloading. 3. High-Efficiency Low-Noise Mixing
For a detailed visual of the pinout or specific performance curves, you can find the 3SK41 PDF datasheet on sites like AllDatasheet circuit diagrams
) allows separate bias control. Users can feed a DC control voltage into G2cap G sub 2 to smoothly scale the transconductance ( gfsg sub f s end-sub