![]() ![]() It can switch loads upto 50V but has a very low collector current rating of only 150mA so this transistor is not really a good choice to be used as a switch. When used as a switch it can easily by controlled by a MCU/MPU since it has a base voltage of only 5V. It is also used as oscillators with is complementary A733 PNP transistor. Hence it was widely used in amplifier applications for pre-amplifying purpose, in high frequency circuits. It has a decent gain value (hfe) of maximum 700 and is highly linear. ![]() ![]() The C945 is an age old Japanese Bipolar audio frequency NPN transistor. Normally during such replacements heat shrink tubes are used to cross over the Base and Collector pins without them getting into contact. But for European transistors like BC546 the order will be as Emitter, Base and Collector. Warning: The C945 is a Japanese NPN transistor and hence the C945 pinout will be in Emitter, Collector, Base order. Collector-Emitter voltage (VCEO) is 50 VĪ733 Modern Replacement by ON SemiconductorĢN3904 (Pinouts are different) Alternative for 2SC945.Continuous Collector current (IC) is 150mA.Current Gain (hFE) is 70 to 700 (high linearity).Japanese High frequency amplifier NPN Transistor.Current Drains out through emitter, normally connected to groundĬurrent flows in through collector, normally connected to loadĬontrols the biasing of transistor, Used to turn ON or OFF the transistor
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