Drain Current in BJT Formulas

Drain Current below threshold voltage is defined as the subthreshold current and varies exponentially with gate to source voltage. And is denoted by I_d. Drain Current is usually measured using the Milliampere for Electric Current. Note that the value of Drain Current is always negative.

Formulas to find Drain Current in BJT

fxDrain Current given Device ParameterGo

BJT formulas that make use of Drain Current

fxEmitter Current given Base CurrentGo

fxEmitter Current given Collector CurrentGo

fxOutput Resistance of Current Source given Device ParameterGo

fxOutput Voltage of BJT AmplifierGo

fxTransconductance of BJT at Intrinsic GainGo

List of variables in BJT formulas

fx Transconductance Go

fx Aspect Ratio Go

fx Effective Voltage Go

fx Threshold Voltage Go

fx Device Parameter Go

fx Voltage between Drain and Source Go

FAQ

What is the Drain Current?

Drain Current below threshold voltage is defined as the subthreshold current and varies exponentially with gate to source voltage. Drain Current is usually measured using the Milliampere for Electric Current. Note that the value of Drain Current is always negative.

Can the Drain Current be negative?

Yes, the Drain Current, measured in Electric Current can be negative.

What unit is used to measure Drain Current?

Drain Current is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Drain Current can be measured.

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