C1124 Transistor Datasheet Better Upd Info

The authentic C1124 variant is typically housed in a or variant TO-220 form factor. It features a distinct metal tab or heat-sink mounting plane that allows it to dissipate up to 5 Watts when properly paired with an external cooling profile. Primary Applications

The full part number is , with common variants including 2SC1124-1 , 2SC1124-3 , and sometimes it appears simply as C1124 on the component itself. This transistor uses a silicon (Si) semiconductor material. As an NPN bipolar junction transistor (BJT), it works in a configuration where a positive layer is sandwiched between two negative layers to create its three terminals: the Base , Collector , and Emitter .

. A lower saturation voltage ensures efficient switching and less power wasted as heat. Typically 100 MHz (

Because it handles up to 140V, it’s a workhorse for linear power supply regulators in older CRT monitors and lab equipment. c1124 transistor datasheet better

Typically 60 to 320 (Often categorized into ranks like R, O, Y)

The (often labeled simply as C1124 ) is an NPN silicon power transistor designed for high-voltage audio amplification and general switching. It is frequently paired with its PNP complement, the 2SA706 , in audio output stages. ⚡ Key Specifications Description Type Silicon Bipolar Junction Transistor (BJT) V CEO 120V – 140V Max Collector-Emitter voltage (varies by manufacturer) I C 1.0A – 1.5A Max continuous Collector current P C 5W – 7.9W Max power dissipation (with proper heat sinking) h FE 50 – 442

If your device has a blown C1124, don't just swap it. Something killed it: The authentic C1124 variant is typically housed in

The C1124 was traditionally housed in a variant featuring a thin metal tab. This tab allows it to be fastened directly to an aluminum heat sink, which is critical for dissipating thermal energy when pushing the transistor toward its 5W–7.9W upper limits. Pin Layout (Front View)

| Parameter | C1124 Original | KSC2690A (Better) | | :--- | :--- | :--- | | | 50V | 120V (2.4x better) | | Ic | 1A | 1.2A (slightly better) | | Pc | 8W | 20W (2.5x better) | | fT | 80 MHz | 150 MHz (2x better) | | hFE @ 1A | ~50 | 100+ (2x better) |

Finding a Better Substitute for the C1124 Transistor: Datasheet Breakdown and Upgrades This transistor uses a silicon (Si) semiconductor material

(formally known as the ) is a high-voltage NPN silicon transistor originally manufactured by Sony and Hitachi, frequently found in classic audio equipment like Pioneer amplifiers. Finding a modern replacement requires careful attention to its unique combination of high voltage and power handling. Key Specifications (Datasheet Summary)

The 2SC1124 is generally housed in a modified or TO-92L package (longer body for better heat dissipation).

— Receives the triggering current to switch or modulate the flow between collector and emitter.

You won't find the 2SC1124 at Mouser or DigiKey. Production stopped in the late 1990s.