![]() ![]() ![]() The collector current is large compared to the base current. ![]() The current flowing by the remaining electrons is known as the collector current I C. MCC TM Micro Commercial Components TIP31/A/B/C 20736 Marilla Street Chatsworth Micro Commercial Components CA 91311 Phone: (818) 701-4933 Fax: (818) 701-4939 Features TO-220 package Silicon NPN The complementary PNP types are the TIP32 respectively Case Material: Molded Plastic. Most of the electrons pass the depletion region of a collector-base junction and pass through the collector region. Typically, it is 2-5% of the total emitter current. The base current is very small compared to the emitter current. Hence, most of the electrons will pass the base region and few of them will recombine with the holes.īecause of the recombination, the current will flow through the circuit and this current is known as base current I B. So, it has a few holes to recombine with the electrons. But the base region is very thin and lightly doped. These electrons move further to the base. This current is known as emitter current I E. And because of electrons, the current will start flowing the emitter-base junction. Therefore, electrons start flowing from N-type emitter to a P-type base. ![]() In N-type emitter, the majority charge carrier is electrons. The depletion region of the emitter-base region is thin compared to the depletion region of the collector-base junction (Note that the depletion region is a region where no mobile charge carriers are present and it behaves like a barrier that opposes the flow of the current). ![]()
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