3sk41 Datasheet Now
Unlike single-gate MOSFETs, the dual-gate structure allows for a second gate ( G2cap G sub 2
: The input impedance of the 3SK41 is extremely high (in the megohm range). This makes it susceptible to damage from electrostatic discharge (ESD). Always use grounded soldering irons and anti-static wrist straps when handling.
A highly accessible, surface-mount (SOT-143) N-channel dual-gate MOSFET offering high transconductance and low noise. It is widely used to replace vintage through-hole RF FETs.
): Maximum permissible bias on the primary signal gate (typically ±plus or minus ±plus or minus Maximum permissible bias on the control gate. Drain Current ( IDcap I sub cap D
Direct alternative iterations from similar Japanese design portfolios that align closely in operational voltage and package style.
VBR(DSS)cap V sub cap B cap R open paren cap D cap S cap S close paren end-sub Maximum breakdown voltage across drain and source 3sk41 datasheet
Standard range (e.g., up to 125°C or higher for metal cans) Feature Look-In: The Dual-Gate Advantage The defining characteristic of the 3SK41 is its
While the 3SK41 is considered a legacy or hard-to-find component today, its legacy designs remain active in several industries:
Are you looking to replace an active part or doing a ?
The second gate acts as a shield between the input gate and the drain, drastically reducing internal feedback (Miller effect).
As the 3SK41 is increasingly classified as an "obsolete" or hard-to-find part, finding a modern equivalent is often necessary for repairs or new designs. Common substitutes include: Drain Current ( IDcap I sub cap D
This structural shielding eliminates the need for complex neutralization circuits, providing cleaner layouts for active RF designs. Key Applications & Use Cases Thanks to its low continuous current limits (
The dual-gate structure allows for superior gain control (AGC) and high stability by reducing the internal capacitance between the drain and the primary gate. www.jotrin.ru The "Deep Story": A Relic of the Analog Era
Used for general-purpose signal conversion and switching in alarms and security systems. Datasheet Resources
Excellent alternatives for RF/IF amplifiers with high gain performance. Where to Find the 3SK41 Datasheet
Often used in receiver front-ends to improve sensitivity and selectivity. drastically reducing internal feedback (Miller effect).
Given that the 3SK41 is an obsolete component, finding a reliable replacement is common. Here are known substitutes:
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
Looking at the top or bottom of the device package (refer to your specific datasheet graphic for orientation), the four leads correspond to:
Offers stable matching characteristics for RF preamplifier substitutions.
