C1124 Transistor Datasheet | 100% ULTIMATE |

The C1124 transistor is typically housed in a plastic through-hole package. When viewing the flat face with the part number, the leads from left to right are:

Relays often require more current than a logic chip can provide. The C1124’s 500mA current rating allows it to drive small to medium-sized relays effectively. The flyback diode (used to protect the circuit from voltage spikes when the relay turns off) is essential in these configurations. C1124 Transistor Datasheet

Avoid generic "datasheet" sites that only show one line of specs. Ensure the PDF clearly states the manufacturer (Hitachi, NEC, etc.) and includes all absolute maximum ratings and characteristic curves (hFE vs Ic, ft vs Ic, etc.). The C1124 transistor is typically housed in a

Thanks to its combination of moderate voltage (50V Vceo), low noise, and 100mA current capability, the C1124 has been widely used in: The flyback diode (used to protect the circuit

If C1124 is unavailable, use with verification:

| Parameter | Symbol | Value | Unit | |-----------|--------|-------|------| | Collector-Base Voltage | (V_CBO) | 30 | V | | Collector-Emitter Voltage | (V_CEO) | 20 | V | | Emitter-Base Voltage | (V_EBO) | 4 | V | | Collector Current | (I_C) | 50 | mA | | Total Power Dissipation | (P_tot) | 300 | mW | | Junction Temperature | (T_j) | 150 | °C | | Storage Temperature Range | (T_stg) | -55 to +150 | °C |

Given its PNP nature and voltage/current ratings, where is the C1124 typically used?