11/23/2023 0 Comments Emitter base voltageHowever, since the collector current is 100mA, the transistor won’t favor a large load. Later, the collector terminal collects the emitted electrons from the base terminal. The base terminal in the BC549 transistor works like a control valve that regulates electrons’ numbers. That means when you apply the 5V at its base terminal, it’ll receive biasing and then trigger an electron reaction. Under normal circumstances, the emitter voltage in the BC549 transistor is 5V. Lastly, its package type is SOT54 and TO-92.In addition, its maximum operating temperature and storage should range from -65☌ to +150☌.The maximum collector current is 100mA, while the maximum collector dissipation is 500mW.The minimum and maximum DC gain also range from 110 to 800.The collector capacitance is 4.5 pF, whereas the transition frequency is 200MHz.It’s a low voltage and low current NPN transistor.Then, the maximum emitter-base voltage is 5V.Similarly, the maximum collector-base voltage (V CB) is also 30V. First, it has a maximum collector-emitter voltage (V CE) of 30V.BC549 Transistor FeaturesīC549 transistor has the specifications and features The value ranges from 0.95 to 0.99, but you can also use it as a unity. Often, we have an amplification factor ranging from 420 to 800 in a BC549 transistor.Ĭonversely, we have alpha (α) as the current gain (ratio between emitter current and collector current). Practically, it’s the ratio between base current and collector current. The common emitter type is applicable mainly since it has exact voltage and current rating values for the amplification process.īeta (β) is an amplification factor that defines the amplification’s nature. Collector pin/pin3 – It allows current flow.įurthermore, you can use the BC549 transistor for three main configurations, namely.Base terminal/pin2 controls the current between the emitter and collector.Emitter terminal/pin1 – It often drains the current.Therefore, these ratings for a BJT are useful for these purposes. If so, the transistor can be destroyedĪnd cause widespread damages to other parts of the circuit. Sure that none of these junctions receive more voltage than their specified ratings. These values are important when doing circuit design to make Withstand for each respective junction without being destroyed. Applying more voltage across the emitter-base junction than the V EBO ratingĬan destroy the transistor, so design engineers normally make sure to check this rating and be within bounds of it.Īs you can see explained above, each of these 3 voltages specifies the maximum voltage that a transistor can The V EBO rating which you see in a transistor datasheet is the breakdown voltage rating for the emitter-baseĪgain, this voltage must be checked on the transistor's datasheet to make sure it is not exceeded. The V EBO Rating of a Transistor is the maximum allowable voltage that the emitter-base junction of a In use to make sure this voltage isn't exceeded. Again, make sure to look up this rating for the transistor The V CBO rating which you see in a transistor datasheet is the breakdown voltage rating for the collector-baseĪpply a voltage greater the V CBO rating across the collector-base junction can destroy the transistor. The V CBO Rating of a Transistor is the maximum allowable voltage that the collector-base junction of a The datasheet for the transistor in use and design the circuit so that it receives a voltage lower than this rating across the collector-emitter junction. The V CEO rating which you see in a transistor datasheet is the breakdown voltageĪpplying a voltage to the collector-emitter junction exceeding this rating can destroy the transistor. The maximum allowable voltage that a junction of a transistor can withstand is called the Transistor can handle before it becomes damaged or destroyed. The V CEO Rating of a Transistor is the maximum allowable voltage that the collector-emitter junction of a
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