The C1124 transistor datasheet provides the following key parameters:
| Parameter | Symbol | Value | Unit | Notes | | :--- | :--- | :--- | :--- | :--- | | | $V_CBO$ | 150 | V | The max voltage the transistor can handle when off. | | Collector-Emitter Voltage | $V_CEO$ | 100 | V | The max voltage between collector and emitter. | | Emitter-Base Voltage | $V_EBO$ | 6 | V | Low tolerance; be careful with drive circuits. | | Collector Current | $I_C$ | 5 | A | Max continuous current it can sink. | | Peak Collector Current | $I_C(pulse)$ | 8 | A | For short bursts (pulse applications). | | Power Dissipation | $P_C$ | 50 | W | Max power it can dissipate (requires a heatsink). | | DC Current Gain | $h_FE$ | 40 - 100 | - | Determines amplification factor. |
If you are fixing vintage equipment and want it to sound original:
