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high temperature resistance electrical potting epoxy material for pcb

SATOP®8603 two-component high temperature resistance epoxy potting compound

electrical potting epoxy
electrical potting epoxy
electrical potting epoxy

Product description of electrical potting epoxy

SATOP®8603A/B is a two-component solvent heating type epoxy potting compound, long gel time at room temperature, developed specifically for long-term high temperature 260 °C special requirements, suitable for sensors, high temperature wire harness,  packaging protection of high temperature resistant products in automotive electronics, have excellent adhesion and low shrinkage.           

  • Higher Tg at 260 ℃ for long-term use
  • Excellent adhesion and cracking resistance.
  • Good toughness and high hardness.
  • Excellent electrical insulation and stability.
  • Very low linear expansion coefficient.
  • Good waterproof, moisture-proof, water absorption rate is extremely low.
Before curingTest itemTest standardUnit8603A8603B
color White/black pasteColorless transparent liquid
ViscosityGB/T 10247-200825℃,mPa·s150,000±30,000100±10
DensityGB/T 13354-9225℃,g/cm31.71±0.051.16±0.05
Mix ratioWeight ratioRatio=A:B5:1
Mix viscosityGB/T 10247-200825℃,mPa·s10,000
Operating timeGB/T 10247-200825℃,hr10
Gel timeGB/T 10247-200825℃,hr16
Cure timeGB/T 10247-2008hr1hr/120℃+1hr/150℃
After curingHardnessGB/T 531.1-200825℃,Shore D85
260℃,Shore D60
Coefficient of expansionGB/T 20673-2006μm/(m,℃)
Thermal ConductivityGB/T 10297-1998W/m.k0.65
Glass transition temperatureDSC190
Shear strengthGB 6328-86Mpa,iron/iron15
Dielectric strengthGB/T 1693-2007kV/mm(25℃)≥20
Loss factorGB/T 1693-2007(1MHz)(25℃)0.09
Dielectric constantGB/T 1693-2007(1MHz)(25℃)2.9
Volume resistanceGB/T 1692-92DC500V,Ω· cm2.00E +15


  1. 1.The above data test curing conditions are: 1hr/120℃+1hr/150℃.
  2. 2.The data in the table is the measured data under a specific condition,For reference only, it does not guarantee that the data obtained by the customer during actual use can be completely consistent with it.

Operation process of electrical potting epoxy

  • PartA will settle in the storage process, first mix Part A in the original package, and then add Part A and Part B components by a weight ratio of 5:1. Potting.
  • component may crystallize or agglomerate (normal condition) during storage.If crystallized, need to be placed in an oven at 80°C to melt before use(the container should be open to avoid gas expansion and damage the container), and then used after being cooled to room temperature, this does not affect its performance.
  • If necessary, the potted device can continue to be vacuumed, which is beneficial to increase the electrical performance of the device.
  • Recommended curing conditions: 120°C*1h+150°C*1h for better electrical performance and heat resistance.

Packing of electrical potting epoxy

Part A: 5kg/plastic barrel

Part B: 1kg/bottle

Storage and transportation

  • A, B components need to be protected from light, heat, sealed and stored (can be transported and stored as non-dangerous goods);
  • The storage period is one year.

Product safety information is not included here. Before use, please read the product information, product safety information and packaging label for safe use. The product safety information can be obtained from SATOP and the distributor, or write to the SATOP service center [email protected] or call 021-64243697.

The technical data of this paper are all typical values obtained under laboratory conditions.We are not responsible for the results of methods beyond our control.Because users use condition is different, different material surface state, curing conditions, storage conditions, transportation and other factors can make gum stability and physical and mechanical properties, the actual performance data has some changes are normal phenomenon.Before using this product,Validation is based on the data provided in this article.If you have any problems with the process, you can contact our technical service department and we will provide you with all the help. Our company reserves the right to modify the data in this article.


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