FAQ

How to choose the correct thermal material?
Thermal management of LED module.
What is thermal interface materials?
What is thermal compound?
Thermal rate and thermal conductivity.

The importance of thermal conductivity:

The thermal conductivity and heat dissipation capacity of the heat dissipation device are closely related to the life and performance of the product of the electronic product. Thermal Conductivity

High thermal conductivity material or thermal conductivity interface material directly to the thermal conductivity of the higher capacity. Thermal conductivity has a variety of different titles, common thermal conductivity, heat transfer, heat transfer, thermal conductivity, thermal conductivity, thermal conductivity, thermal conductivity, heat transfer coefficient and thermal conductivity.

 

Key parameters of thermal interface material - Thermal conductivity:

Heat transfer coefficient (heat transfer Coefficient), also known as heat transfer coefficient (k) in W / mK, thermal conductivity formula k = (Q / t) * L / (A * T), where k is the thermal conductivity, Q is the heat, t is the time, L is the length, A is the area, T is the temperature difference; is used to measure the energy per unit time conduction.

Design of the thermal conductivity of the interface material is the key parameter of the thermal conductivity, select the best performance (high K value) products are not necessarily necessary, hardness, thickness, heat area is also an important design considerations. When the other parameters are equal, the higher the thermal conductivity represents the more efficient thermal management.

 

The k-value interval of the thermally conductive interface material:

Low k value: 1 - 3 W / m-k

In k value: 4 -6 W / m-k

High k value: 6 - 12 W / m-k

 

Thermal conductivity of different substances at room temperature Reference table:​

Materials

Thermal Conductivity W/m.K

Materials

Thermal Conductivity W/m.K

Diamond

2300

Water (l)

0.613

Silver

429

Human's Skin

0.37

Copper

401

Wood

0.17

Gold

317

Helium

0.152

Aluminum

237

Soft Rubber

0.13

Iron

80.2

Glass Fiber

0.043

Mercury

8.54

Air

0.026

Glass

1.4

Hard polyurethane
Foamed Rigid Urethane

0.026

Brick

0.72

The difference of thermal grease and thermal pad.
The feature and application of thermal tape.
Product properties of thermal conductive.
How to properly apply the thermal paste to the CPU and GPU?
The application and category of TIM(Thermal Interface Materi
The meaning of compressibility relative to TIM.
The meaning of hardness relative to TIM.
What is silicon or non-silicon thermal pad?
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