Base Current of PNP Transistor using Common-Base Current Gain Calculator

✖Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons.ⓘ Common-Base Current Gain [α]			+10% -10%
✖Emitter Current is the amplified output current of a bipolar junction transistor.ⓘ Emitter Current [I_e]			+10% -10%

✖Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.ⓘ Base Current of PNP Transistor using Common-Base Current Gain [I_B]

⎘ Copy

👎

Formula

✖

Base Current of PNP Transistor using Common-Base Current Gain

Formula

`"I"_{"B"} = (1-"α")*"I"_{"e"}`

Example

`"0.076155mA"=(1-"0.985")*"5.077mA"`

Calculator

LaTeX

Reset

👍

Download BJT Formula PDF PDF Image

Base Current of PNP Transistor using Common-Base Current Gain Solution

STEP 0: Pre-Calculation Summary

Formula Used

Base Current = (1-Common-Base Current Gain)*Emitter Current
I_B = (1-α)*I_e
This formula uses 3 Variables

Variables Used

Base Current - (Measured in Ampere) - Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.
Common-Base Current Gain - Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons.
Emitter Current - (Measured in Ampere) - Emitter Current is the amplified output current of a bipolar junction transistor.

STEP 1: Convert Input(s) to Base Unit

Common-Base Current Gain: 0.985 --> No Conversion Required
Emitter Current: 5.077 Milliampere --> 0.005077 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_B = (1-α)*I_e --> (1-0.985)*0.005077

Evaluating ... ...

I_B = 7.61550000000001E-05

STEP 3: Convert Result to Output's Unit

7.61550000000001E-05 Ampere -->0.0761550000000001 Milliampere (Check conversion here)

FINAL ANSWER

0.0761550000000001 ≈ 0.076155 Milliampere <-- Base Current

(Calculation completed in 00.020 seconds)

You are here -

Home » Engineering » Electronics » BJT » Analog Electronics » Current » Base Current » Base Current of PNP Transistor using Common-Base Current Gain

Credits

Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Calculator and 600+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 14 Base Current Calculators

Base Current using Saturation Current in DC

Go Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage)

Saturation Current using Doping Concentration

Go Saturation Current = (Cross-section Area of Base-Emitter Junction*[Charge-e]*Electron Diffusivity*(Intrinsic Carrier Concentration)^2)/(Width of Base Junction*Doping Concentration of Base)

Short Circuit Current Gain of BJT

Go Short-Circuit Current Gain = (Common-Emitter Current Gain at Low Frequency)/(1+Complex Frequency Variable*(Emitter-Base Capacitance+Collector-Base Junction Capacitance)*Input Resistance)

Drain Current given Device Parameter

Go Drain Current = 1/2*Transconductance*Aspect Ratio*(Effective Voltage-Threshold Voltage)^2*(1+Device Parameter*Voltage between Drain and Source)

Base Current 2 of BJT

Go Base Current = (Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage))

Base Current of PNP Transistor using Saturation Current

Go Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Emitter Voltage/Thermal Voltage)

Reference Current of BJT Mirror

Go Reference Current = Collector Current+(2*Collector Current)/Common Emitter Current Gain

Reference Current of BJT Current Mirror

Go Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance

Reference Current of BJT Mirror given Collector Current

Go Reference Current = Collector Current*(1+2/Common Emitter Current Gain)

Base Current of PNP Transistor given Emitter Current

Go Base Current = Emitter Current/(Common Emitter Current Gain+1)

Base Current of PNP Transistor using Collector Current

Go Base Current = Collector Current/Common Emitter Current Gain

Base Current 1 of BJT

Go Base Current = Collector Current/Common Emitter Current Gain

Base Current of PNP Transistor using Common-Base Current Gain

Go Base Current = (1-Common-Base Current Gain)*Emitter Current

Total Base Current

Go Base Current = Base Current 1+Base Current 2

< 20 BJT Circuit Calculators

Transition Frequency of BJT

Go Transition Frequency = Transconductance/(2*pi*(Emitter-Base Capacitance+Collector-Base Junction Capacitance))

Base Current of PNP Transistor using Saturation Current

Go Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Emitter Voltage/Thermal Voltage)

Total Power Dissipated in BJT

Go Power = Collector-Emitter Voltage*Collector Current+Base-Emitter Voltage*Base Current

Unity-Gain Bandwidth of BJT

Go Unity-Gain Bandwidth = Transconductance/(Emitter-Base Capacitance+Collector-Base Junction Capacitance)

Reference Current of BJT Mirror

Go Reference Current = Collector Current+(2*Collector Current)/Common Emitter Current Gain

Common Mode Rejection Ratio

Go Common Mode Rejection Ratio = 20*log10(Differential Mode Gain/Common Mode Gain)

Output Resistance of BJT

Go Resistance = (Supply Voltage+Collector-Emitter Voltage)/Collector Current

Thermal Equilibrium Concentration of Minority Charge Carrier

Go Thermal Equilibrium Concentration = ((Intrinsic Carrier Density)^2)/Doping Concentration of Base

Output Voltage of BJT Amplifier

Go Output Voltage = Supply Voltage-Drain Current*Load Resistance

Total Power Supplied in BJT

Go Power = Supply Voltage*(Collector Current+Input Current)

Common-Base Current Gain

Go Common-Base Current Gain = Common Emitter Current Gain/(Common Emitter Current Gain+1)

Collector to Emitter Voltage at Saturation

Go Collector-Emitter Voltage = Base-Emitter Voltage-Base-Collector Voltage

Base Current of PNP Transistor given Emitter Current

Go Base Current = Emitter Current/(Common Emitter Current Gain+1)

Base Current of PNP Transistor using Collector Current

Go Base Current = Collector Current/Common Emitter Current Gain

Collector Current using Emitter Current

Go Collector Current = Common-Base Current Gain*Emitter Current

Base Current of PNP Transistor using Common-Base Current Gain

Go Base Current = (1-Common-Base Current Gain)*Emitter Current

Collector Current of BJT

Go Collector Current = Emitter Current-Base Current

Emitter Current of BJT

Go Emitter Current = Collector Current+Base Current

Short-Circuit Transconductance

Go Transconductance = Output Current/Input Voltage

Intrinsic Gain of BJT

Go Intrinsic Gain = Early Voltage/Thermal Voltage

Base Current of PNP Transistor using Common-Base Current Gain Formula

Base Current = (1-Common-Base Current Gain)*Emitter Current
I_B = (1-α)*I_e

What is PNP transistor?

The transistor in which one n-type material is doped with two p-type materials such type of transistor is known as PNP transistor. The PNP transistor turns on when a small current flows through the base. The direction of current in the PNP transistor is from the emitter to the collector.

How to Calculate Base Current of PNP Transistor using Common-Base Current Gain?

Base Current of PNP Transistor using Common-Base Current Gain calculator uses Base Current = (1-Common-Base Current Gain)*Emitter Current to calculate the Base Current, The Base Current of PNP Transistor using Common-Base Current Gain is proportional to the number of electrons injected into the base. Base Current is denoted by I_B symbol.

How to calculate Base Current of PNP Transistor using Common-Base Current Gain using this online calculator? To use this online calculator for Base Current of PNP Transistor using Common-Base Current Gain, enter Common-Base Current Gain (α) & Emitter Current (I_e) and hit the calculate button. Here is how the Base Current of PNP Transistor using Common-Base Current Gain calculation can be explained with given input values -> 76.155 = (1-0.985)*0.005077.

FAQ

What is Base Current of PNP Transistor using Common-Base Current Gain?

The Base Current of PNP Transistor using Common-Base Current Gain is proportional to the number of electrons injected into the base and is represented as I_B = (1-α)*I_e or Base Current = (1-Common-Base Current Gain)*Emitter Current. Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons & Emitter Current is the amplified output current of a bipolar junction transistor.

How to calculate Base Current of PNP Transistor using Common-Base Current Gain?

The Base Current of PNP Transistor using Common-Base Current Gain is proportional to the number of electrons injected into the base is calculated using Base Current = (1-Common-Base Current Gain)*Emitter Current. To calculate Base Current of PNP Transistor using Common-Base Current Gain, you need Common-Base Current Gain (α) & Emitter Current (I_e). With our tool, you need to enter the respective value for Common-Base Current Gain & Emitter Current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Base Current?

In this formula, Base Current uses Common-Base Current Gain & Emitter Current. We can use 10 other way(s) to calculate the same, which is/are as follows -

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

Home

FREE PDFs

🔍 Search