C1124 Transistor Datasheet Better May 2026

The 2SC1124 is a vintage, high-voltage NPN silicon BJT designed for audio amplification, featuring 140V-160V VCEOcap V sub cap C cap E cap O end-sub

| Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | Collector-Base Voltage | ( V_CBO ) | 100 | V | | Collector-Emitter Voltage | ( V_CEO ) | 60 | V | | Emitter-Base Voltage | ( V_EBO ) | 6 | V | | Collector Current (DC) | ( I_C ) | 3 | A | | Collector Current (Pulse) | ( I_CP ) | 5 | A | | Collector Dissipation | ( P_C ) | 20 (with heatsink) | W | | Junction Temperature | ( T_J ) | 150 | °C | | DC Current Gain (( h_FE )) | at 500mA | 60 – 240 | - | c1124 transistor datasheet better

3. Switching Time

If you are using this in a power supply (SMPS), the original C1124 has a ( t_off ) of ~2.5µs. Modern alternatives like the MJE340 are faster, reducing heat. The 2SC1124 is a vintage, high-voltage NPN silicon

If you want, I can draft a short forum/social media post version or fetch the exact manufacturer datasheet PDF. If you want, I can draft a short

): 140 MHz, making it suitable for high-frequency signal processing. DC Current Gain ( hFEh sub cap F cap E end-sub