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Softness Factor Formula

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Softness Factor is defined as the ratio of times forward current decay and reverse current decay in BJT. Check FAQs

s = \frac{t b}{t a}

s - Softness Factor?t_b - Reverse Current Decay Time?t_a - Forward Current Decay Time?

Softness Factor Example

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Here is how the Softness Factor equation looks like with Values.

Here is how the Softness Factor equation looks like with Units.

Here is how the Softness Factor equation looks like.

0.2351 = \frac{2.25}{9.57}

0.2351 = \frac{2.25s}{9.57s}

0.2351 = \frac{2.25}{9.57}

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Softness Factor Solution

Follow our step by step solution on how to calculate Softness Factor?

FIRST Step Consider the formula

s = \frac{t b}{t a}

Next Step Substitute values of Variables

∴

s = \frac{2.25s}{9.57s}

Next Step Prepare to Evaluate

∴

s = \frac{2.25}{9.57}

Next Step Evaluate

∴

s = 0.235109717868339

LAST Step Rounding Answer

∴

s = 0.2351

Softness Factor Formula Elements

Variables

Softness Factor

Softness Factor is defined as the ratio of times forward current decay and reverse current decay in BJT.

Symbol: s

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Softness Factor

Reverse Current Decay Time

Reverse Current Decay Time is the time required by the reverse current to decays to 25% of the Reverse recovery current in BJT.

Symbol: t_b

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Reverse Current Decay Time

Forward Current Decay Time

Forward Current Decay Time is the time required to make or decay the forward current flowing through the diode to 0 in transistor device.

Symbol: t_a

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Forward Current Decay Time

Other formulas in BJT category

Go Reverse Recovery Time

t rr = \sqrt{2 \cdot \frac{Q RR}{ΔI}}

Go Reverse Recovery Current

I RR = \sqrt{2 \cdot Q RR \cdot ΔI}

Go Reverse Recovery Charge

Q RR = 0.5 \cdot I RR \cdot t rr

Go BJT Turn ON Time

T on = T r + T d

How to Evaluate Softness Factor?

Softness Factor evaluator uses Softness Factor = Reverse Current Decay Time/Forward Current Decay Time to evaluate the Softness Factor, The Softness Factor formula is defined the ratio of reverse current decay time and forward current decay time. Softness Factor is denoted by s symbol.

How to evaluate Softness Factor using this online evaluator? To use this online evaluator for Softness Factor, enter Reverse Current Decay Time (t_b) & Forward Current Decay Time (t_a) and hit the calculate button.

FAQs on Softness Factor

What is the formula to find Softness Factor?

The formula of Softness Factor is expressed as Softness Factor = Reverse Current Decay Time/Forward Current Decay Time. Here is an example- 0.23511 = 2.25/9.57.

How to calculate Softness Factor?

With Reverse Current Decay Time (t_b) & Forward Current Decay Time (t_a) we can find Softness Factor using the formula - Softness Factor = Reverse Current Decay Time/Forward Current Decay Time.

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Softness Factor Formula

Softness Factor Example

Softness Factor Solution

Softness Factor Formula Elements

Other formulas in BJT category

How to Evaluate Softness Factor?

FAQs on Softness Factor

Variable Name