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Base Junction Width of Amplifier Formula

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Base Junction Width is the parameter which signifies how wide is the base junction of any analog electronics element. Check FAQs

w b = \frac{A be \cdot [Charge-e] \cdot D n \cdot n po}{i sat}

w_b - Base Junction Width?A_be - Base Emitter Area?D_n - Electron Diffusivity?n_po - Thermal Equilibrium Concentration?i_sat - Saturation Current?[Charge-e] - Charge of electron?

Base Junction Width of Amplifier Example

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Here is how the Base Junction Width of Amplifier equation looks like with Values.

Here is how the Base Junction Width of Amplifier equation looks like with Units.

Here is how the Base Junction Width of Amplifier equation looks like.

0.0085 = \frac{0.12 \cdot 1.6E-19 \cdot 0.8 \cdot 1E+15}{1.809}

0.0085cm = \frac{0.12cm² \cdot 1.6E-19C \cdot 0.8cm²/s \cdot 1E+151/cm³}{1.809mA}

0.0085 = \frac{0.12 \cdot 1.6E-19 \cdot 0.8 \cdot 1E+15}{1.809}

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Base Junction Width of Amplifier Solution

Follow our step by step solution on how to calculate Base Junction Width of Amplifier?

FIRST Step Consider the formula

w b = \frac{A be \cdot [Charge-e] \cdot D n \cdot n po}{i sat}

Next Step Substitute values of Variables

∴

w b = \frac{0.12cm² \cdot [Charge-e] \cdot 0.8cm²/s \cdot 1E+151/cm³}{1.809mA}

Next Step Substitute values of Constants

∴

w b = \frac{0.12cm² \cdot 1.6E-19C \cdot 0.8cm²/s \cdot 1E+151/cm³}{1.809mA}

Next Step Convert Units

∴

w b = \frac{1.2E-5m² \cdot 1.6E-19C \cdot 8E-5m²/s \cdot 1E+211/m³}{0.0018A}

Next Step Prepare to Evaluate

∴

w b = \frac{1.2E-5 \cdot 1.6E-19 \cdot 8E-5 \cdot 1E+21}{0.0018}

Next Step Evaluate

∴

w b = 8.50242982421227E-05m

Next Step Convert to Output's Unit

∴

w b = 0.00850242982421227cm

LAST Step Rounding Answer

∴

w b = 0.0085cm

Base Junction Width of Amplifier Formula Elements

Variables

Constants

Base Junction Width

Base Junction Width is the parameter which signifies how wide is the base junction of any analog electronics element.

Symbol: w_b

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Base Junction Width

Base Emitter Area

Base Emitter Area is defined as the cross-sectional area of the base emitter junction in an amplifier.

Symbol: A_be

Measurement: AreaUnit: cm²

Note: Value should be greater than 0.

Formulas to find Base Emitter Area

Electron Diffusivity

Electron Diffusivity is the diffusion current is a current in a semiconductor caused by the diffusion of charge carriers (holes and/or electrons).

Symbol: D_n

Measurement: DiffusivityUnit: cm²/s

Note: Value should be greater than 0.

Formulas to find Electron Diffusivity

Thermal Equilibrium Concentration

Thermal Equilibrium Concentration is defined as the concentration of carriers in an amplifier.

Symbol: n_po

Measurement: Carrier ConcentrationUnit: 1/cm³

Note: Value should be greater than 0.

Formulas to find Thermal Equilibrium Concentration

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

Charge of electron

Charge of electron is a fundamental physical constant, representing the electric charge carried by an electron, which is the elementary particle with a negative electric charge.

Symbol: [Charge-e]

Value: 1.60217662E-19 C

Other formulas in Amplifier Characteristics category

Go Power Gain of Amplifier

A p = \frac{P L}{P in}

Go Current Gain of Amplifier

A i = \frac{I o}{i in}

Go Differential Voltage in Amplifier

V id = \frac{V o}{(\frac{R 4}{R 3}) \cdot (1 + \frac{R 2}{R 1})}

Go Current Gain of Amplifier in Decibels

A i(dB) = 20 \cdot (\log 10 (A i))

How to Evaluate Base Junction Width of Amplifier?

Base Junction Width of Amplifier evaluator uses Base Junction Width = (Base Emitter Area*[Charge-e]*Electron Diffusivity*Thermal Equilibrium Concentration)/Saturation Current to evaluate the Base Junction Width, The Base Junction Width of Amplifier refers to the width of the base region in a bipolar junction transistor (BJT) used in the amplifier circuit. This parameter affects the amplifier's gain and bandwidth, as a wider base junction width can provide higher gain and lower distortion. Base Junction Width is denoted by w_b symbol.

How to evaluate Base Junction Width of Amplifier using this online evaluator? To use this online evaluator for Base Junction Width of Amplifier, enter Base Emitter Area (A_be), Electron Diffusivity (D_n), Thermal Equilibrium Concentration (n_po) & Saturation Current (i_sat) and hit the calculate button.

FAQs on Base Junction Width of Amplifier

What is the formula to find Base Junction Width of Amplifier?

The formula of Base Junction Width of Amplifier is expressed as Base Junction Width = (Base Emitter Area*[Charge-e]*Electron Diffusivity*Thermal Equilibrium Concentration)/Saturation Current. Here is an example- 850243 = (0.12*[Charge-e]*8E-05*1E+15)/0.001809.

How to calculate Base Junction Width of Amplifier?

With Base Emitter Area (A_be), Electron Diffusivity (D_n), Thermal Equilibrium Concentration (n_po) & Saturation Current (i_sat) we can find Base Junction Width of Amplifier using the formula - Base Junction Width = (Base Emitter Area*[Charge-e]*Electron Diffusivity*Thermal Equilibrium Concentration)/Saturation Current. This formula also uses Charge of electron constant(s).

Can the Base Junction Width of Amplifier be negative?

No, the Base Junction Width of Amplifier, measured in Length cannot be negative.

Which unit is used to measure Base Junction Width of Amplifier?

Base Junction Width of Amplifier is usually measured using the Centimeter[cm] for Length. Meter[cm], Millimeter[cm], Kilometer[cm] are the few other units in which Base Junction Width of Amplifier can be measured.

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Base Junction Width of Amplifier Formula

Base Junction Width of Amplifier Example

Base Junction Width of Amplifier Solution

Base Junction Width of Amplifier Formula Elements

Other formulas in Amplifier Characteristics category

How to Evaluate Base Junction Width of Amplifier?

FAQs on Base Junction Width of Amplifier

Variable Name