Free PCB Temperature Calculator

This PCB thermal analysis online calculator software is used to estimate the junction temperature rise of an exposed pad device attached to a printed circuit board (PCB). The calculator computes the total junction to ambiemt PCB thermal resistance due to the conduction through and convection and radiation.

Thermal analysis of the PCB is conducted by computing the equivalent thermal conductivity of the PCB based on the copper coverage area, number and thickness of the PCB layers, size of the attached device and strength of natural convection and radiation from the surface of the PCB.

PCB Layers

Air Flow

Device

Calculate

PCB Dimensions

L: mm

W: mm

PCB Layers

Number of Layers: 1 2 4 6 8 10

Material	Thickness [mm]	% Coverage	Device
Copper
FR-4/Pre-preg		-
Copper Aluminum
FR-4/Pre-preg		-
Copper Aluminum
FR-4/Pre-preg		-
Copper Aluminum

Ambient Temperature: °C

Heat Transfer Surfaces

Select the surface(s) from which heat transfer will occur.

Surface 1

Surface 2

Surfaces 1 & 2

Orientation

Radiation

Emissivity Surface 1:

Emissivity Surface 2:

W_p: mm

L_p: mm

P: Watts

θ_jb: °C/W

Thermal Vias

d_via: mm

t_via: mm

k_via: W/(m⋅K)

Via Pattern I

Via Pattern II

s: mm

Filled Thermal Vias

k_filler: W/(m⋅K)

Oops....An error occured during the calculations. Check your inputs.

°C

Junction Temperature

°C/W

Thermal Resistance

Dimensions

Length:

mm

Width:

mm

PCB Thickness:

mm

Air Flow

Ambient Temperature:

°C

Emissivity Surface 1:

Emissivity Surface 2:

Orientation:

Power Source

W_p:

mm

L_p:

mm

Power:

W

R_th-jc:

°C/W