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Gate 1, Gate 2, Source, Drain (often with a 4th lead for the case/shield) Commonly Available Data Sources: Alldatasheet - 3SK41L Veswin 3SK41 Description Utsource 3SK41 Description
, it is a classic component often found in amateur radio equipment and older television tuners. www.jotrin.ru Key Technical Specifications 3sk41 datasheet
The dual-gate structure reduces the internal feedback capacitance ( cap C sub r s s end-sub Gate 1, Gate 2, Source, Drain (often with
| Parameter | Test Condition | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | VG1S = 0V | 2.5 | 7.0 | 15 | mA | | Gate 1 Cut-off Voltage | ID = 100 µA | -1.5 | -0.8 | -0.3 | V | | Forward Transfer Admittance (Yfs) | f = 100 MHz | 7 | 12 | - | mS | | Input Capacitance (Ciss) | f = 1 MHz | - | 3.5 | 5 | pF | | Reverse Transfer Capacitance (Crss) | f = 1 MHz | - | 0.05 | 0.2 | pF | | Output Capacitance (Coss) | f = 1 MHz | - | 1.8 | 2.5 | pF | | Noise Figure (NF) | f = 200 MHz, optimized | - | 4.0 | 6.0 | dB | | Power Gain (Gps) | f = 200 MHz | 18 | 23 | - | dB | Without the datasheet, the device is a black
If replacing a 3SK41 (TO-72) with a BF998 (SOT-143):
The circuit uses the 3SK41 as the primary power-switching element.
Furthermore, the datasheet highlights a growing crisis in the "Right to Repair" movement. For vintage audiovisual enthusiasts and archivists, the 3SK41 is a critical component. When a vintage Sony Trinitron from the 1980s fails to pick up a signal, it is often this small, metal-can transistor that has failed. The datasheet provides the necessary "pinout" and replacement specifications, allowing a modern engineer to hunt for a modern equivalent (like the BF998) to keep the antique running. Without the datasheet, the device is a black box; with it, the device can be understood, reverse-engineered, and potentially revived.
Gate 1, Gate 2, Source, Drain (often with a 4th lead for the case/shield) Commonly Available Data Sources: Alldatasheet - 3SK41L Veswin 3SK41 Description Utsource 3SK41 Description
, it is a classic component often found in amateur radio equipment and older television tuners. www.jotrin.ru Key Technical Specifications
The dual-gate structure reduces the internal feedback capacitance ( cap C sub r s s end-sub
| Parameter | Test Condition | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | VG1S = 0V | 2.5 | 7.0 | 15 | mA | | Gate 1 Cut-off Voltage | ID = 100 µA | -1.5 | -0.8 | -0.3 | V | | Forward Transfer Admittance (Yfs) | f = 100 MHz | 7 | 12 | - | mS | | Input Capacitance (Ciss) | f = 1 MHz | - | 3.5 | 5 | pF | | Reverse Transfer Capacitance (Crss) | f = 1 MHz | - | 0.05 | 0.2 | pF | | Output Capacitance (Coss) | f = 1 MHz | - | 1.8 | 2.5 | pF | | Noise Figure (NF) | f = 200 MHz, optimized | - | 4.0 | 6.0 | dB | | Power Gain (Gps) | f = 200 MHz | 18 | 23 | - | dB |
If replacing a 3SK41 (TO-72) with a BF998 (SOT-143):
The circuit uses the 3SK41 as the primary power-switching element.
Furthermore, the datasheet highlights a growing crisis in the "Right to Repair" movement. For vintage audiovisual enthusiasts and archivists, the 3SK41 is a critical component. When a vintage Sony Trinitron from the 1980s fails to pick up a signal, it is often this small, metal-can transistor that has failed. The datasheet provides the necessary "pinout" and replacement specifications, allowing a modern engineer to hunt for a modern equivalent (like the BF998) to keep the antique running. Without the datasheet, the device is a black box; with it, the device can be understood, reverse-engineered, and potentially revived.