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Leakage Current of Collector-Base Junction Formula

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Collector Base Leakage Current is a current that flows in a bipolar junction transistor (BJT) between the collector and base terminals when the transistor is in its reverse-biased condition. Check FAQs

I CBO = I C - α \cdot I C

I_CBO - Collector Base Leakage Current?I_C - Collector Current?α - Common-Base Current Gain?

Leakage Current of Collector-Base Junction Example

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Here is how the Leakage Current of Collector-Base Junction equation looks like with Values.

Here is how the Leakage Current of Collector-Base Junction equation looks like with Units.

Here is how the Leakage Current of Collector-Base Junction equation looks like.

30 = 100 - 0.7 \cdot 100

30A = 100A - 0.7 \cdot 100A

30 = 100 - 0.7 \cdot 100

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Leakage Current of Collector-Base Junction Solution

Follow our step by step solution on how to calculate Leakage Current of Collector-Base Junction?

FIRST Step Consider the formula

I CBO = I C - α \cdot I C

Next Step Substitute values of Variables

∴

I CBO = 100A - 0.7 \cdot 100A

Next Step Prepare to Evaluate

∴

I CBO = 100 - 0.7 \cdot 100

LAST Step Evaluate

∴

I CBO = 30A

Leakage Current of Collector-Base Junction Formula Elements

Variables

Collector Base Leakage Current

Collector Base Leakage Current is a current that flows in a bipolar junction transistor (BJT) between the collector and base terminals when the transistor is in its reverse-biased condition.

Symbol: I_CBO

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Collector Base Leakage Current

Collector Current

Collector Current refers to the current that flows between the collector and emitter terminals when the SCR is in its conducting or ON state.

Symbol: I_C

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Collector Current

Common-Base Current Gain

Common-Base Current Gain is defined as the change in collector current divided by the change in emitter current when the base-to-collector voltage is constant.

Symbol: α

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Common-Base Current Gain

Other formulas in SCR Performance Parameters category

Go Derating Factor of Series Connected Thyristor String

DRF = 1 - \frac{V string}{V ss \cdot n}

Go Power Dissipated by Heat in SCR

P dis = \frac{T junc - T amb}{θ}

Go Thermal Resistance of SCR

θ = \frac{T junc - T amb}{P dis}

Go Worst Case Steady State Voltage across First Thyristor in Series Connected Thyristors

V ss = \frac{V string + R stb \cdot (n - 1) \cdot ΔI D}{n}

How to Evaluate Leakage Current of Collector-Base Junction?

Leakage Current of Collector-Base Junction evaluator uses Collector Base Leakage Current = Collector Current-Common-Base Current Gain*Collector Current to evaluate the Collector Base Leakage Current, The Leakage Current of Collector-Base Junction is the difference between the collector current and the common base current gain of the transistor (α) times the emitter current. α is the ratio of I_C to I_E . Collector Base Leakage Current is denoted by I_CBO symbol.

How to evaluate Leakage Current of Collector-Base Junction using this online evaluator? To use this online evaluator for Leakage Current of Collector-Base Junction, enter Collector Current (I_C) & Common-Base Current Gain (α) and hit the calculate button.

FAQs on Leakage Current of Collector-Base Junction

What is the formula to find Leakage Current of Collector-Base Junction?

The formula of Leakage Current of Collector-Base Junction is expressed as Collector Base Leakage Current = Collector Current-Common-Base Current Gain*Collector Current. Here is an example- 30 = 100-0.7*100.

How to calculate Leakage Current of Collector-Base Junction?

With Collector Current (I_C) & Common-Base Current Gain (α) we can find Leakage Current of Collector-Base Junction using the formula - Collector Base Leakage Current = Collector Current-Common-Base Current Gain*Collector Current.

Can the Leakage Current of Collector-Base Junction be negative?

No, the Leakage Current of Collector-Base Junction, measured in Electric Current cannot be negative.

Which unit is used to measure Leakage Current of Collector-Base Junction?

Leakage Current of Collector-Base Junction is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Leakage Current of Collector-Base Junction can be measured.

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