Maximum Operating Temperature (Tmax): This is the maximum temperature at which the transistor can be operated. Transition Frequency (fT): This is the frequency at which the transistor switches from cut-off to saturation. Power Dissipation (Pd): This is the maximum amount of power that can be dissipated by the transistor. Maximum Collector Current (Ic): This is the maximum amount of current that can be drawn from the collector of the transistor. Maximum Collector-Emitter Voltage (Vce): This is the maximum voltage that can be applied between the collector and emitter of the transistor. The 2N2222 NPN can handle up to 40 volts. Maximum Collector-Base Voltage (Vcb): This is the maximum voltage that can be applied between the collector and base of the transistor. The silicon version is the most popular and the most common. ![]() ![]() Material: The transistor can either be made of silicon or germanium. They influence how it operates and even performs. Let’s look at the key features that make up 2N2222 transistor. Key features and characteristics of 2N2222 transistor On the other hand, the type of material used can also play a role in the transistor’s performance.įor example, silicon is known to be more reliable than germanium, and it can also be used to create transistors with higher gain. Depending on the type of doping used, the performance of the transistor can vary greatly.įor instance, a transistor with n-type doping will have a higher gain than one with p-type doping. So, does the materials used affect the performance of the transistor? Yes, it does. Doping is a process of introducing impurities into the material in order to create a semiconductor, which is necessary for the transistor to function properly. Whichever material is used, it must be doped with either positively charged or negatively charged materials. For example, silicon has a high breakdown voltage and low leakage current, while germanium has a low breakdown voltage and high gain.Īlso, the combination of these two materials allows for greater temperature stability and a slower turn-on time. These two materials have various physical and chemical properties that make them ideal for transistors. Silicon and germanium are the two materials used on the 2N2222. ![]() These three components of the transistor work together in order to control the flow of current through the transistor, allowing it to be used for a variety of applications. When the collector current is decreased, the transistor turns off, blocking current from flowing from the collector to the emitter. When the collector current is increased, it causes the transistor to turn on, allowing current to flow from the collector to the emitter. The collector current is usually proportional to the base current, which means that the larger the base voltage, the larger the collector current. This current flow is called the collector current and is used to control the flow of current through the transistor, thereby controlling the output. When a voltage is applied to the base of the transistor, it causes a current to flow through the emitter and collector. So, how do these three terminals correlate to function together? It is usually the positive terminal of the transistor and is connected to the emitter.
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