CoolTherm® EP-343 Thermally Conductive Epoxy Conformal Coating | #CoolTherm EP-343


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CoolTherm EP-343

CoolTherm® EP-343 Thermally Conductive Epoxy Conformal Coating | #CoolTherm EP-343

CoolTherm® EP-343 coating is a two-component, dielectric epoxy coating recommended for coating printed circuit boards, semiconductors & heat sink assemblies. It efficiently distributes heat from the circuits throughout the coated surface of the board.


Technical Specifications

  • Trade Name: CoolTherm EP-343 Thermally Conductive Epoxy Conformal Coating
  • Cure Time: 2 Hours @ 257°F (125°C)
  • Volume Resistivity: 1 x 10^16 OHM-CM @ 77°F (25°C)
  • Color: Black Liquid (resin), Amber Liquid (hardener), Black Liquid (mixed)
  • Dynamic Viscosity: 65 cP @ 77°F (25°C) (resin), 55 cP @ 77°F (25°C) (hardener), 55 cP @ 77°F (25°C) (mixed)
  • Dielectric Strength: 59 kV/mm, 1500 V/mil
Safety Warning

Item Information

CoolTherm® EP-343 coating is a two-component, dielectric epoxy coating recommended for coating

printed circuit boards, semiconductors and heat sink assemblies. CoolTherm EP-343 coating efficiently

distributes heat from the circuits throughout the coated surface of the board.


Features and Benefits:

• High Thermal Conductivity – provides high electrical insulation with exceptionally good heat transfer.

• Environmentally Resistant – provides good resistance to water and a wide variety of chemicals.

• Broad Temperature Range – can be used on parts and devices that experience operating temperatures from -65°C to +130°C.

• Low Viscosity – maintains low viscosity, allowing easy application with conventional spray equipment.

• MIL-E-5272 Compliant – meets requirements of Military Specification MIL-E-5272.

• Lasting Appearance – cured system is free of dimpling; provides good edge coverage and excellent hiding power, even in thin applications.


Shelf Life/Storage:

Shelf life is one year for CoolTherm EP-343 resin and two years for CoolTherm EP-343 hardener when stored at 25°C in original, unopened container.

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