It is just the forward biased diode equation. The BC junction is forward biased in saturationHelena Wells said:yeah just write there is a formula for the relationship between collector , emitter current and base current in forward active mode i was wondering if there is for saturation.
BJT saturation is a state in which the transistor is fully turned on and the collector-emitter voltage is at its minimum level. In this state, the transistor behaves like a closed switch, allowing a large amount of current to flow from the collector to the emitter.
In BJT saturation, the base-collector current is at its maximum value. This is because the transistor is fully turned on, allowing a large amount of current to flow from the collector to the emitter. The amount of base current required to achieve saturation is called the saturation current, and it is typically a few percent of the collector current.
The base-collector current in BJT saturation is affected by the base current, the collector-emitter voltage, and the characteristics of the transistor itself. The base current must be sufficient to turn on the transistor, and the collector-emitter voltage must be low enough to keep the transistor in saturation. The transistor's characteristics, such as its gain and saturation current, also play a role in determining the base-collector current in saturation.
BJT saturation and active mode are two different operating states of a transistor. In active mode, the transistor is partially turned on and acts as an amplifier, while in saturation, the transistor is fully turned on and behaves like a switch. In active mode, the collector current is controlled by the base current, while in saturation, the collector current is determined by the characteristics of the transistor.
The base-collector current in BJT saturation is an important parameter in transistor circuits, as it determines the amount of current that can flow through the transistor. It is also used in the design and analysis of transistor circuits, as it helps in determining the operating point and the stability of the circuit. In addition, the base-collector current in saturation is used to calculate the transistor's power dissipation and efficiency.