3sk41 Datasheet [extra Quality] Info
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:
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.
Thanks to its dual-gate design, the 3SK41 excels in roles where single-gate FETs require complex external neutralizaton circuits. VHF/UHF Amplifiers
): Min 8.0 mS. High gain structure allows weak signal reception. Input Capacitance ( Cisscap C sub i s s end-sub 3sk41 datasheet
: The 3SK41 almost certainly comes in a TO-72 metal can package . If you see a 3SK41 described as a relay, it is almost certainly a mis-categorized product, as some major component distributors have been found to incorrectly list the 3SK41 as a four-channel relay.
3SK41 1Pcs 3SK41 Encapsulation:Can4,N-Channel Dual Gate Mosfet
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. As the 3SK41 is increasingly classified as an
The 3SK41 was specifically intended for use in , where its low noise figure and high input impedance were critical for achieving good sensitivity in FM tuners and other RF front‑ends. It was part of a family of Japanese dual‑gate MOSFETs, with the “3S” prefix indicating a four‑lead, single‑ended, high‑frequency device.
As the world shifted from analog to digital (SDRs and integrated circuits), discrete dual-gate MOSFETs like the 3SK41 became
: 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. Thanks to its dual-gate design, the 3SK41 excels
RDS(on)cap R sub cap D cap S open paren o n close paren end-sub to reduce thermal dissipation during conduction cycles. Pinout and Mechanical Configuration
): The maximum continuous current allowed through the channel (usually in the range of 20mA to 50mA). Total heat dissipation capacity at room temperature ( 25∘C25 raised to the composed with power C ), typically around 100mW to 200mW. Storage & Operating Temperature: Usually rated from -55∘Cnegative 55 raised to the composed with power C +125∘Cpositive 125 raised to the composed with power C 4. Electrical and RF Characteristics
While modern surface-mount devices have largely taken over, the 3SK41 remains a staple for hobbyists and repair centers looking for authentic components for legacy industrial and commercial equipment. It was famously manufactured through collaborations involving giants like , giving it a pedigree of reliability. Quick Technical Summary Type N-Channel Dual-Gate MOSFET Package CAN4 (Metal Can) Common Uses Power amplifiers, motor control, SMPS Key Advantage High gain and low noise at high frequencies
): Extremely low internal capacitance values ensure the device remains stable and does not self-oscillate at UHF frequencies. 5. Common Applications
): Max 5.0 pF. Minimal capacitive loading preserves high-frequency bandwidth. Max 4.0 V. Conduction Efficiency: Designed with a minimized
