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Base Current using Saturation Current in DC Formula

GoBase Current 1 of BJT Formula

GoBase Current 2 of BJT Formula

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Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on. Check FAQs

I B = (\frac{I sat}{β}) \cdot e^{\frac{V BC}{V t}} + e s \cdot e^{\frac{V BC}{V t}}

I_B - Base Current?I_sat - Saturation Current?β - Common Emitter Current Gain?V_BC - Base-Collector Voltage?V_t - Thermal Voltage?e_s - Saturation Vapour Pressure?

Base Current using Saturation Current in DC Example

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Here is how the Base Current using Saturation Current in DC equation looks like with Values.

Here is how the Base Current using Saturation Current in DC equation looks like with Units.

Here is how the Base Current using Saturation Current in DC equation looks like.

3.6E+6 = (\frac{1.675}{65}) \cdot e^{\frac{2}{4.7}} + 17.54 \cdot e^{\frac{2}{4.7}}

3.6E+6mA = (\frac{1.675mA}{65}) \cdot e^{\frac{2V}{4.7V}} + 17.54mmHg \cdot e^{\frac{2V}{4.7V}}

3.6E+6 = (\frac{1.675}{65}) \cdot e^{\frac{2}{4.7}} + 17.54 \cdot e^{\frac{2}{4.7}}

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Base Current using Saturation Current in DC Solution

Follow our step by step solution on how to calculate Base Current using Saturation Current in DC?

FIRST Step Consider the formula

I B = (\frac{I sat}{β}) \cdot e^{\frac{V BC}{V t}} + e s \cdot e^{\frac{V BC}{V t}}

Next Step Substitute values of Variables

∴

I B = (\frac{1.675mA}{65}) \cdot e^{\frac{2V}{4.7V}} + 17.54mmHg \cdot e^{\frac{2V}{4.7V}}

Next Step Convert Units

∴

I B = (\frac{0.0017A}{65}) \cdot e^{\frac{2V}{4.7V}} + 2338.4679Pa \cdot e^{\frac{2V}{4.7V}}

Next Step Prepare to Evaluate

∴

I B = (\frac{0.0017}{65}) \cdot e^{\frac{2}{4.7}} + 2338.4679 \cdot e^{\frac{2}{4.7}}

Next Step Evaluate

∴

I B = 3578.80121683189A

Next Step Convert to Output's Unit

∴

I B = 3578801.21683189mA

LAST Step Rounding Answer

∴

I B = 3.6E+6mA

Base Current using Saturation Current in DC Formula Elements

Variables

Base Current

Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.

Symbol: I_B

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Base Current

Saturation Current

Saturation Current is the diode leakage current density in the absence of light. It is an important parameter which differentiates one diode from another.

Symbol: I_sat

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Saturation Current

Common Emitter Current Gain

Common emitter current gain is influenced by 2 factors: width of base region W, and relative dopings of base region and emitter region. Its range varies from 50-200.

Symbol: β

Measurement: NAUnit: Unitless

Note: Value should be between 49 to 201.

Formulas to find Common Emitter Current Gain

Base-Collector Voltage

Base-Collector Voltage is the electric potential between the base and collector region of a transistor.

Symbol: V_BC

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Base-Collector Voltage

Thermal Voltage

Thermal Voltage is the voltage produced within the p-n junction.

Symbol: V_t

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Thermal Voltage

Saturation Vapour Pressure

Saturation Vapour Pressure at Water Surface (mm of mercury) is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature.

Symbol: e_s

Measurement: PressureUnit: mmHg

Note: Value can be positive or negative.

Formulas to find Saturation Vapour Pressure

Other Formulas to find Base Current

Go Base Current 1 of BJT

I B = \frac{I c}{β}

Go Base Current 2 of BJT

I B = (\frac{I sat}{β}) \cdot (e^{\frac{V BE}{V t}})

Go Total Base Current

I B = I B1 + I B2

Go Base Current of PNP Transistor using Collector Current

I B = \frac{I c}{β}

Other formulas in Base Current category

Go Drain Current given Device Parameter

I d = \frac{1}{2} \cdot G m \cdot WL \cdot {(V ov - V th)}^{2} \cdot (1 + V A \cdot V DS)

Go Reference Current of BJT Current Mirror

I ref = \frac{V DD - V BE}{R}

Go Reference Current of BJT Mirror given Collector Current

I ref = I c \cdot (1 + \frac{2}{β})

Go Saturation Current using Doping Concentration

I sat = \frac{A E \cdot [Charge-e] \cdot D n \cdot {(n i1)}^{2}}{W base \cdot N B}

How to Evaluate Base Current using Saturation Current in DC?

Base Current using Saturation Current in DC evaluator uses Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage) to evaluate the Base Current, The Base current using saturation current in DC a common-base (also known as grounded-base) amplifier is one of three basic single-stage bipolar junction transistor (BJT) amplifier typologies, typically used as a current buffer or voltage amplifier. Base Current is denoted by I_B symbol.

How to evaluate Base Current using Saturation Current in DC using this online evaluator? To use this online evaluator for Base Current using Saturation Current in DC, enter Saturation Current (I_sat), Common Emitter Current Gain (β), Base-Collector Voltage (V_BC), Thermal Voltage (V_t) & Saturation Vapour Pressure (e_s) and hit the calculate button.

FAQs on Base Current using Saturation Current in DC

What is the formula to find Base Current using Saturation Current in DC?

The formula of Base Current using Saturation Current in DC is expressed as Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage). Here is an example- 3.6E+9 = (0.001675/65)*e^(2/4.7)+2338.46788*e^(2/4.7).

How to calculate Base Current using Saturation Current in DC?

With Saturation Current (I_sat), Common Emitter Current Gain (β), Base-Collector Voltage (V_BC), Thermal Voltage (V_t) & Saturation Vapour Pressure (e_s) we can find Base Current using Saturation Current in DC using the formula - Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage).

What are the other ways to Calculate Base Current?

Here are the different ways to Calculate Base Current-

Base Current=Collector Current/Common Emitter Current Gain
Base Current=(Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage))
Base Current=Base Current 1+Base Current 2

Can the Base Current using Saturation Current in DC be negative?

No, the Base Current using Saturation Current in DC, measured in Electric Current cannot be negative.

Which unit is used to measure Base Current using Saturation Current in DC?

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

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Base Current using Saturation Current in DC Formula

​GoBase Current 1 of BJT Formula

​GoBase Current 2 of BJT Formula

Base Current using Saturation Current in DC Example

Base Current using Saturation Current in DC Solution

Base Current using Saturation Current in DC Formula Elements

Other Formulas to find Base Current

Other formulas in Base Current category

How to Evaluate Base Current using Saturation Current in DC?

FAQs on Base Current using Saturation Current in DC

Variable Name

GoBase Current 1 of BJT Formula

GoBase Current 2 of BJT Formula