BJT Turn OFF Time Calculator

✖Storage Time is the time interval between the trailing edge of the input pulse to the 90% of the maximum value of the output in a BJT.ⓘ Storage Time [T_s]			+10% -10%
✖Fall Time is the time taken for the collector current to reach from 90% of its maximum value to 10% of its initial value in a transistor device.ⓘ Fall Time [T_f]			+10% -10%

✖turn Off time is the sum of storage time (t_s ) and fall time (t_f ) is defined as the Turn-off time of diode in transistor device.ⓘ BJT Turn OFF Time [T_off]

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Formula

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BJT Turn OFF Time

Formula

`"T"_{"off"} = "T"_{"s"}+"T"_{"f"}`

Example

`"3.399s"="1.549s"+"1.85s"`

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BJT Turn OFF Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

Turn OFF Time = Storage Time+Fall Time
T_off = T_s+T_f
This formula uses 3 Variables

Variables Used

Turn OFF Time - (Measured in Second) - turn Off time is the sum of storage time (t_s ) and fall time (t_f ) is defined as the Turn-off time of diode in transistor device.
Storage Time - (Measured in Second) - Storage Time is the time interval between the trailing edge of the input pulse to the 90% of the maximum value of the output in a BJT.
Fall Time - (Measured in Second) - Fall Time is the time taken for the collector current to reach from 90% of its maximum value to 10% of its initial value in a transistor device.

STEP 1: Convert Input(s) to Base Unit

Storage Time: 1.549 Second --> 1.549 Second No Conversion Required
Fall Time: 1.85 Second --> 1.85 Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T_off = T_s+T_f --> 1.549+1.85

Evaluating ... ...

T_off = 3.399

STEP 3: Convert Result to Output's Unit

3.399 Second --> No Conversion Required

FINAL ANSWER

3.399 Second <-- Turn OFF Time

(Calculation completed in 00.004 seconds)

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Created by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has created this Calculator and 100+ more calculators!

Verified by Vidyashree V

BMS College of Engineering (BMSCE), Bangalore

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< 7 BJT Calculators

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Go Reverse Recovery Charge = 0.5*Reverse Recovery Current*Reverse Recovery Time

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BJT Turn OFF Time

Go Turn OFF Time = Storage Time+Fall Time

BJT Turn ON Time

Go Turn ON Time = Rise Time+Delay Time

BJT Turn OFF Time Formula

Turn OFF Time = Storage Time+Fall Time
T_off = T_s+T_f

Why don't BJT turn off instantly?

It turn off after some instant due to the presence of junction capacitance, the charge stored in the junction capacitance first needs to be removed in order to turn bjt off.

How to Calculate BJT Turn OFF Time?

BJT Turn OFF Time calculator uses Turn OFF Time = Storage Time+Fall Time to calculate the Turn OFF Time, The BJT turn OFF time formula is defined as the time taken by the BJT to turn off completely or to go from conducting state to non-conducting state. Turn OFF Time is denoted by T_off symbol.

How to calculate BJT Turn OFF Time using this online calculator? To use this online calculator for BJT Turn OFF Time, enter Storage Time (T_s) & Fall Time (T_f) and hit the calculate button. Here is how the BJT Turn OFF Time calculation can be explained with given input values -> 3.399 = 1.549+1.85.

FAQ

What is BJT Turn OFF Time?

The BJT turn OFF time formula is defined as the time taken by the BJT to turn off completely or to go from conducting state to non-conducting state and is represented as T_off = T_s+T_f or Turn OFF Time = Storage Time+Fall Time. Storage Time is the time interval between the trailing edge of the input pulse to the 90% of the maximum value of the output in a BJT & Fall Time is the time taken for the collector current to reach from 90% of its maximum value to 10% of its initial value in a transistor device.

How to calculate BJT Turn OFF Time?

The BJT turn OFF time formula is defined as the time taken by the BJT to turn off completely or to go from conducting state to non-conducting state is calculated using Turn OFF Time = Storage Time+Fall Time. To calculate BJT Turn OFF Time, you need Storage Time (T_s) & Fall Time (T_f). With our tool, you need to enter the respective value for Storage Time & Fall Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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