Power Dissipated by Heat in SCR Solution

STEP 0: Pre-Calculation Summary
Formula Used
Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance
Pdis = (Tjunc-Tamb)/θ
This formula uses 4 Variables
Variables Used
Power Dissipated by Heat - (Measured in Watt) - Power Dissipated by Heat in SCR is defined as the average of the total heat generated at the junctions of the SCR due to movement of charge.
Junction Temperature - (Measured in Kelvin) - Junction temperature is defined as the temperature of the junction of a SCR due to movement of charge.
Ambient Temperature - (Measured in Kelvin) - Ambient temperature is defined as the temperature of the surroundings of the SCR.
Thermal Resistance - (Measured in Kelvin per Watt) - Thermal resistance of SCR is defined as the the ratio of the temperature difference between the two faces of a material to the rate of heat flow per unit area in a SCR.
STEP 1: Convert Input(s) to Base Unit
Junction Temperature: 10.2 Kelvin --> 10.2 Kelvin No Conversion Required
Ambient Temperature: 5.81 Kelvin --> 5.81 Kelvin No Conversion Required
Thermal Resistance: 1.49 Kelvin per Watt --> 1.49 Kelvin per Watt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Pdis = (Tjunc-Tamb)/θ --> (10.2-5.81)/1.49
Evaluating ... ...
Pdis = 2.94630872483221
STEP 3: Convert Result to Output's Unit
2.94630872483221 Watt --> No Conversion Required
FINAL ANSWER
2.94630872483221 2.946309 Watt <-- Power Dissipated by Heat
(Calculation completed in 00.004 seconds)

Credits

Created by Parminder Singh
Chandigarh University (CU), Punjab
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5 SCR Performance Parameters Calculators

Worst Case Steady State Voltage across First Thyristor in Series Connected Thyristors
Go Worst Case Steady State Voltage = (Resultant Series Voltage of Thyristor String+Stablizing Resistance*(Number of Thyristors in Series-1)*Off State Current Spread)/Number of Thyristors in Series
Derating Factor of Series Connected Thyristor String
Go Derating Factor of Thyristor String = 1-Resultant Series Voltage of Thyristor String/(Worst Case Steady State Voltage*Number of Thyristors in Series)
Leakage Current of Collector-Base Junction
Go Collector Base Leakage Current = Collector Current-Common-Base Current Gain*Collector Current
Power Dissipated by Heat in SCR
Go Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance
Thermal Resistance of SCR
Go Thermal Resistance = (Junction Temperature-Ambient Temperature)/Power Dissipated by Heat

16 SCR Characteristics Calculators

Worst Case Steady State Voltage across First Thyristor in Series Connected Thyristors
Go Worst Case Steady State Voltage = (Resultant Series Voltage of Thyristor String+Stablizing Resistance*(Number of Thyristors in Series-1)*Off State Current Spread)/Number of Thyristors in Series
Thyristor Commutation Voltage for Class B Commutation
Go Thyristor Commutation Voltage = Input Voltage*cos(Angular Frequency*(Thyristor Reverse Bias Time-Auxiliary Thyristor Reverse Bias Time))
Derating Factor of Series Connected Thyristor String
Go Derating Factor of Thyristor String = 1-Resultant Series Voltage of Thyristor String/(Worst Case Steady State Voltage*Number of Thyristors in Series)
Time Period for UJT as Oscillator Thyristor Firing Circuit
Go Time Period of UJT as Oscillator = Stablizing Resistance*Capacitance*ln(1/(1-Intrinsic Stand-off Ratio))
Emitter Current for UJT based Thyristor Firing Circuit
Go Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance)
Circuit Turn off Time Class B Commutation
Go Circuit Turn Off Time Class B Commutation = Thyristor Commutation Capacitance*Thyristor Commutation Voltage/Load Current
Frequency of UJT as Oscillator Thyristor Firing Circuit
Go Frequency = 1/(Stablizing Resistance*Capacitance*ln(1/(1-Intrinsic Stand-off Ratio)))
Thyristor Conduction Time for Class A Commutation
Go Thyristor Conduction Time = pi*sqrt(Inductance*Thyristor Commutation Capacitance)
Peak Current Class B Thyristor Commutation
Go Peak Current = Input Voltage*sqrt(Thyristor Commutation Capacitance/Inductance)
Intrinsic Stand-off Ratio for UJT based Thyristor Firing Circuit
Go Intrinsic Stand-off Ratio = Emitter Resistance Base 1/(Emitter Resistance Base 1+Emitter Resistance Base 2)
Circuit Turn off Time Class C Commutation
Go Circuit Turn Off Time Class C Commutation = Stablizing Resistance*Thyristor Commutation Capacitance*ln(2)
Leakage Current of Collector-Base Junction
Go Collector Base Leakage Current = Collector Current-Common-Base Current Gain*Collector Current
Power Dissipated by Heat in SCR
Go Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance
Thermal Resistance of SCR
Go Thermal Resistance = (Junction Temperature-Ambient Temperature)/Power Dissipated by Heat
Discharging Current of dv-dt Protection Thyristor Circuits
Go Discharging Current = Input Voltage/((Resistance 1+Resistance 2))
Emitter Voltage to Turn On UJT based Thyristor Firing Circuit
Go Emitter Voltage = Emitter Resistance Base 1 Voltage+Diode Voltage

Power Dissipated by Heat in SCR Formula

Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance
Pdis = (Tjunc-Tamb)/θ

What are the junctions in a SCR?

SCR are mainly used in electronic devices that require control of high voltage and power. This makes them applicable in medium and high AC power operations such as motor control function.
An SCR conducts when a gate pulse is applied to it, just like a diode. It has four layers of semiconductors that form two structures namely; NPNP or PNPN. In addition, it has three junctions labeled as J1, J2 and J3 and three terminals anode,cathode and gate.

How to Calculate Power Dissipated by Heat in SCR?

Power Dissipated by Heat in SCR calculator uses Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance to calculate the Power Dissipated by Heat, The power dissipated by heat in SCR formula is defined as the loss of energy during the working of SCR due to the dissipation of heat from SCR junctions. Power Dissipated by Heat is denoted by Pdis symbol.

How to calculate Power Dissipated by Heat in SCR using this online calculator? To use this online calculator for Power Dissipated by Heat in SCR, enter Junction Temperature (Tjunc), Ambient Temperature (Tamb) & Thermal Resistance (θ) and hit the calculate button. Here is how the Power Dissipated by Heat in SCR calculation can be explained with given input values -> 2.924717 = (10.2-5.81)/1.49.

FAQ

What is Power Dissipated by Heat in SCR?
The power dissipated by heat in SCR formula is defined as the loss of energy during the working of SCR due to the dissipation of heat from SCR junctions and is represented as Pdis = (Tjunc-Tamb)/θ or Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance. Junction temperature is defined as the temperature of the junction of a SCR due to movement of charge, Ambient temperature is defined as the temperature of the surroundings of the SCR & Thermal resistance of SCR is defined as the the ratio of the temperature difference between the two faces of a material to the rate of heat flow per unit area in a SCR.
How to calculate Power Dissipated by Heat in SCR?
The power dissipated by heat in SCR formula is defined as the loss of energy during the working of SCR due to the dissipation of heat from SCR junctions is calculated using Power Dissipated by Heat = (Junction Temperature-Ambient Temperature)/Thermal Resistance. To calculate Power Dissipated by Heat in SCR, you need Junction Temperature (Tjunc), Ambient Temperature (Tamb) & Thermal Resistance (θ). With our tool, you need to enter the respective value for Junction Temperature, Ambient Temperature & Thermal Resistance 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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