2SC2655-O(ND1,AF)

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The 2SC2655-O(ND1,AF) is a type of transistor classified under bipolars or BJTs, single in type. It is an NPN bipolar transistor primarily used in low and medium powered applications, and it belongs to the small Signal Transistor category.

Applications:

The transistor is most commonly used in the audio amplification and switching applications, due to its good noise performance, low impedance output and good current handling capabilities. Common applications it can be used for include, but aren’t limited to: low noise high impedance input amplifiers, tuned amplifier circuits, FM receivers, audio amplifiers, DC-DC converters and medium power switching applications.

Features:

The key features of the transistor include a collector current (IC) of 0.8A, a collector-emitter voltage (VCE) of 40V and a power (PD) of 625mW. Additional features include a current gain (hFE) ranging from 50 – 350, a forward current transfer (hFE) ratio ranging from 150 – 350 and a total capacitance (ft) ranging from 25 – 35MHz. The dimensions are 4.7 x 2.78 mm for the MKV4-1 type transistor and 3.32 x 0.5 mm for the TSSOP package.

Working Principle:

The 2SC2655-O(ND1,AF) works on the principle of bipolar transistors, which employ both electrons and holes to ‘carry’ current from one side of the junction to the other. The electrons and holes are moved together through this process and the movement of the electrons and the holes is then controlled by the base voltage. This generation and movement of electrons and holes allow the transistor to operate as an amplifier or a switch.

Once the base is biased, the tiny current passing through it controls the much larger current flowing through the collector and emitter. The transistor then follows two basic operating modes: the Active Mode and the Cut-off Mode. The Active Mode occurs when there is enough base current driving the transistor at the right level so that it allows current flow in both directions between its Collector and Emitter. The Cut-off Mode occurs when the transistor shuts off and prevents current flow between its Collector and Emitter.

Advantages & Limitations:

The 2SC2655-O(ND1,AF) offers several advantages, such as its relatively low cost, small size, high speed and good current handling capabilities. It also has a higher power handling capability than other similar transistors. Some of the limitations of this transistor are its high power dissipation, large junction leakage, high thermal runaway and noise performance.

Conclusion:

The 2SC2655-O(ND1,AF) is a good choice for certain low and medium-powered applications. Its small size and good current handling capabilities make it ideal for applications such as low noise high impedance input amplifiers, FM receivers, audio amplifiers, tuned amplifier circuits and DC-DC converters. Its main drawbacks are its high power dissipation, high thermal runaway and noise performance. Nevertheless, it is still a great option for many applications due to its cost and performance.

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