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Junction Current Formula

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Junction Current is junction leakage from source/drain diffusions. Check FAQs

i j = (\frac{P st}{V bc}) - (i st + i con + i g)

i_j - Junction Current?P_st - Static Power?V_bc - Base Collector Voltage?i_st - Sub Threshold Current?i_con - Contention Current?i_g - Gate Current?

Junction Current Example

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With units

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Here is how the Junction Current equation looks like with Values.

Here is how the Junction Current equation looks like with Units.

Here is how the Junction Current equation looks like.

134.8167 = (\frac{0.37}{2.22}) - (1.6 + 25.75 + 4.5)

134.8167mA = (\frac{0.37W}{2.22V}) - (1.6mA + 25.75mA + 4.5mA)

134.8167 = (\frac{0.37}{2.22}) - (1.6 + 25.75 + 4.5)

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Junction Current Solution

Follow our step by step solution on how to calculate Junction Current?

FIRST Step Consider the formula

i j = (\frac{P st}{V bc}) - (i st + i con + i g)

Next Step Substitute values of Variables

∴

i j = (\frac{0.37W}{2.22V}) - (1.6mA + 25.75mA + 4.5mA)

Next Step Convert Units

∴

i j = (\frac{0.37W}{2.22V}) - (0.0016A + 0.0258A + 0.0045A)

Next Step Prepare to Evaluate

∴

i j = (\frac{0.37}{2.22}) - (0.0016 + 0.0258 + 0.0045)

Next Step Evaluate

∴

i j = 0.134816666666667A

Next Step Convert to Output's Unit

∴

i j = 134.816666666667mA

LAST Step Rounding Answer

∴

i j = 134.8167mA

Junction Current Formula Elements

Variables

Junction Current

Junction Current is junction leakage from source/drain diffusions.

Symbol: i_j

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Junction Current

Static Power

Static Power is defined as the leakage current due to the very low static power consumption in CMOS devices.

Symbol: P_st

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Static Power

Base Collector Voltage

Base Collector Voltage is a crucial parameter in transistor biasing. It refers to the voltage difference between the base and collector terminals of the transistor when it is in its active state.

Symbol: V_bc

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Base Collector Voltage

Sub Threshold Current

Sub Threshold Current is subthreshold leakage through OFF transistors.

Symbol: i_st

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Sub Threshold Current

Contention Current

Contention Current is defined as the contention current occuring in the ratioed circuits.

Symbol: i_con

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Contention Current

Gate Current

Gate Current is defined as when there is no voltage between the gate and source terminals, no current flows in the drain except leakage current, because of a very high drain-source impedance.

Symbol: i_g

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Gate Current

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V x = E x \cdot E ch

Go DIBL Coefficient

η = \frac{V t0 - V t}{V ds}

How to Evaluate Junction Current?

Junction Current evaluator uses Junction Current = (Static Power/Base Collector Voltage)-(Sub Threshold Current+Contention Current+Gate Current) to evaluate the Junction Current, The Junction Current formula is defined as the flow of electrons from the n-side towards the p-side of the junction takes place when there is an increase in the voltage. Junction Current is denoted by i_j symbol.

How to evaluate Junction Current using this online evaluator? To use this online evaluator for Junction Current, enter Static Power (P_st), Base Collector Voltage (V_bc), Sub Threshold Current (i_st), Contention Current (i_con) & Gate Current (i_g) and hit the calculate button.

FAQs on Junction Current

What is the formula to find Junction Current?

The formula of Junction Current is expressed as Junction Current = (Static Power/Base Collector Voltage)-(Sub Threshold Current+Contention Current+Gate Current). Here is an example- 134816.7 = (0.37/2.22)-(0.0016+0.02575+0.0045).

How to calculate Junction Current?

With Static Power (P_st), Base Collector Voltage (V_bc), Sub Threshold Current (i_st), Contention Current (i_con) & Gate Current (i_g) we can find Junction Current using the formula - Junction Current = (Static Power/Base Collector Voltage)-(Sub Threshold Current+Contention Current+Gate Current).

Can the Junction Current be negative?

No, the Junction Current, measured in Electric Current cannot be negative.

Which unit is used to measure Junction Current?

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

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Junction Current Formula

Junction Current Example

Junction Current Solution

Junction Current Formula Elements

Other formulas in VLSI Material Optimization category

How to Evaluate Junction Current?

FAQs on Junction Current

Variable Name