TK Series Thermal Pads

The TK-P Series thermal conductive silicone pad is a specially designed thermal pad material, utilizing silica gel with a thermally conductive ceramic filler to provide effective thermal conduction. It is reinforced with a glass fiber cloth to improve durability and performance. This highly compressible silicone thermal conductive silicone pad offers excellent thermal conductivity due to its soft and thermally conductive properties. It can be placed in close contact with electronic components, resulting in reduced thermal resistance of the interface, thus providing superior thermal conductivity.

Heatsink cooling thermal conductive silicone pad is designed with a range of features to ensure the utmost safety and protection. It is equipped with self-adhesive on one side, making it easy to install. It is also puncture-proof, offering an extra layer of protection. Additionally, its anti-penetration voltage enhancement ensures your safety in high voltage environments. This thermal conductive pad is designed to be highly reliable and stable in a wide range of temperatures, ranging from -40℃ to 150℃. Additionally, it meets the stringent UL94V0 flame retardant requirements, making it a safe and reliable choice.

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Technical Sheet of TK-P Series Thermal Conductive Silicone Pad

Item Value Test Method
Part No. TK-P4100 TK-P4120 TK-P4150 TK-P4200 TK-P4300 TK-P4400  
Material Ceramic Filler & Silicone & Reinforced Fiberglass Ceramic Filler & Silicone Ceramic Filler & Silicone Ceramic Filler & Silicone Ceramic Filler & Silicone Ceramic Filler & Silicone -
Color White, Brownish Red Light Red Light Grey Grey Light Blue Purple Visual
Thickness 0.5~1.2 mm 0.5~1.2 mm 1.0 ~ 10.0 mm 1.0 ~ 12.0 mm 0.5 ~ 8.0 mm 1.0 ~ 10.0 mm ASTM D374
Density 1.9 g/cc 2.3 g/cc 2.5 g/cc 2.82 g/cc 3.0 g/cc 3.1 g/cc ASTM D792
Hardness 30 Shore C 20 Shore C 40 Shore C 25 Shore C 50 Shore C 55 Shore C ASTM D2240
Thermal Conductivity 1.0 W/m.K 1.2 W/m.K 1.5 W/m.K 2.0 W/m.K 3.0 W/m.K 4.0 W/m.K  
Breakdown Voltage ≥ 8.0 Kv/mm ≥ 6.5 Kv/mm ≥ 7.0 Kv/mm ≥ 6.0 Kv/mm >5.0 Kv/mm >6.0 Kv/mm ASTM D149
Dielectric Constant 5.3 1MHz 5.3 1MHz 6.66 1MHz 7.0 10MHz 7.3 1MHz  7.5 1MHz ASTM D150
Volume Resistivity 10¹³ Ω.cm 10¹² Ω.cm 10¹³ Ω.cm 10¹³ Ω.cm 10¹³ Ω.cm 10¹³ Ω.cm ASTM D257
Flammability V-0 V-0 V-0 V-0 V-0 V-0 UL 94

Features of TK-P4100 Thermal Conductive Silicone Pad

It is necessary to carefully consider its features and properties when selecting a thermal materials. TOPKING's thermal conductive silicone pads are manufactured with the highest quality standards and the most competitive prices in the market. With our commitment to providing the best value for money, TOPKING's thermal conductive silicone pads are the perfect solution for your thermal management needs.

  • It provides excellent heat conduction, making them ideal for use in a wide range of applications, including automotive, medical, and aerospace, etc.
  • It is made of high-quality silicone, which is highly durable and resistant to temperature extremes. 
  • Its excellent thermal conduction capabilities ensure that heat is quickly and evenly distributed, helping to reduce the risk of overheating and improving performance. 
  • It is easy to install, making them a convenient and cost-effective solution for any thermal management need. 
  • It is soft and flexible, allowing it to conform to any surfaces.
  • It provides high electrical insulation to protect sensitive electronic devices from short circuits and other potentially hazardous conditions. 
  • It is designed to meet the highest standards for environmental requirements, offering superior performance and reliability. 


Thermal Conductive Silicone Pad Applications

Thermal conductive silicone pads are ideal thermal materials to provide efficient heat transfer and insulation between two surfaces, and widely used in a variety of industries and applications. 

  • Electronics: to protect delicate components from overheating while still providing effective thermal management.
  • Automotive & New Energy Vehicles: battery packs, power inverters, charger, controllers, vibration and shock absorption of components, etc.

Nowadays, the development of various industries is inseparable from the operation of a large number of electronic devices, but the operation of electronic devices will generate heat, so if this heat is not well distributed, it will cause harm to the equipment, and even seriously affect the normal operation of the various parts of the equipment. In order to solve this problem, thermally conductive materials have been developed and are constantly being updated in iterations. Generally, thermally conductive materials are chemical substances, so some of their own performance parameters determine whether the material is able to conduct heat and dissipate heat well. Here we take a look at important performance parameters of thermally conductive materials.

What are Important Parameters When Buying Thermal Conductivity Materials?

  • Thermal Conductivity Coefficient

The higher the coefficient, the better the thermal conductivity and the more widely it is used. It is measured in W/mK and the higher the value, the faster this material can transfer heat.

  • Working Temperature

Working temperature is also a very important performance factor for thermally conductive materials, the working temperature determines the performance of the material to be used. Thermally conductive materials in the solid state or liquid state is very important, after all, the temperature is too high or too low are not very suitable for the material for heat dissipation. Many thermal materials are with working temperature range, such as thermal conductive silicone grease, the most commonly used materials. Its working temperature is generally in -50 ℃ ~ 220℃. Within this temperature range, heat dissipation is not a problem, so it is important that the temperature generated by the components of the equipment does not exceed this range, especially for components such as cups.

  • Thermal Resistance Coefficient

The thermal resistance coefficient is the effect of the obstruction of the material on the conduction of heat. In fact, resistance is relatively well understood, the object will have a certain obstruction to the conduction of heat, the greater the obstruction, the worse the heat dissipation effect, so the lower the thermal resistance is the better. The normal operation of the equipment, the ambient temperature is certainly a certain, so it is necessary to consider the thermal conductivity.

  • Dielectric Constant

CPU is one of the most important components in terms of heat dissipation. Nowadays, not only mobile phones, computers and other devices have high requirements for heat dissipation. The dielectric constant is a very important parameter to be considered inside the computer inside the computer, and only if this parameter is normal, which can ensure there are no short circuits inside the computer. Ordinary silicone is not electrically conductive, but some silicone containing silver may have some conductivity.

Above is some important performance parameters of thermal conductivity materials, which is needed to pay attention to when selecting, buying or using thermal materials. Only normal parameters can ensure good heat dissipation, and equipment parts can operate well.