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The BC558 is a PNP transistor and a heavy-duty drop-in replacement for a 2N2222 or 2N3906. The three terminals of a bipolar transistor are called the emitter, base, and collector. A small current into the base controls a large current flow from the collector to the emitter. The current at the base is typically one-hundredth of the collector-emitter current. Moreover, the large current flow is almost independent of the voltage across the transistor from collector to emitter. This makes it possible to obtain a large amplification of voltage by taking the output voltage from a resistor in series with the collector.
read our blog explaining the BC547 Transistor: Basic Knowledge, Pin Configuration & Features.
|Collector-Base Voltage (VCBO)
|Collector-Emitter Voltage (VCEO)
|Continuous Collector Current (IC)
|Transition Frequency (fT)
|Power Dissipation (PD)
|5 x 4 x 3cms
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