5390 Epoxy

4.3 W/mK — Highly thermally conductive, electrically insulative

5390 combines remarkable thermal conductivity with electrically insulative properties. Dark gray and self-leveling, this epoxy is ideal for electronics applications that require intense heat dissipation.


Work Life6 hours @ 25°C
ViscosityPaste @ 25°C
Shelf Life6 months @ -40°C 12 months @ -60°C

Cure options

2 hours @ 80°C 1 hr @ 120°C

Cured Properties

Based on cure of 2 hours @ 80°C

ColorDark Gray
Shore D HardnessD/90/0
Glass Transition Temp (°C)20
Density (g/cc)3.14
Lap Shear 2024T3 Clad (psi)1,130
Linear Shrinkage (%)0.16
Tensile Strength (psi)2960
Tensile Modulus (psi)1,220,000
Compressive Strength (psi)14,100
Compressive Modulus (psi)835,000
Poisson’s Ratio0.45
UL 94Meets V0 requirements
Extractable Ionics, ppmChloride: <0.1 Sodium: <0.5 Potassium: <0.1

Electrical Properties

Based on cure of 2 hours @ 80°C

Dielectric Constant6.78 @ 1 MHz
Dissipation Factor0.015 @ 1 MHz
Dielectric Strength (volts/mil)430
Volume Resistivity (ohm-cm)7.1E+13 @ 500 VDC

Thermal Properties

Based on cure of 2 hours @ 80°C

CTE below Tg (ppm/°C)20.9
CTE above Tg (ppm/°C)44.3
Glass Transition Temp (°C)20
Operating Temp. Range (°C)-100 to 160
Thermal Conductivity (W/mK)4.3

Outgassing Properties

Based on cure of 2 hours @ 80°C

TML (%)0.68
CVCM (%)0.03
WVR (%)0.03

Acoustic Properties

Velocity (m/s)4,140
Impedance (MRayls)12.986
Loss (dB/cm-MHz)-8.92
Density (g/cc)3.14

Key Features

  • Very High Thermal Conductivity
  • Electrically Insulative
  • Meets NASA Outgassing Requirements
  • Ideal for Heat Sink Attach and Bonding
  • Injectable
  • Long Pot Life
  • Self Leveling
  • Solvent Resistant
  • √ RoHS Compliant

The data contained herein is provided for informational purposes only and are believed to be reliable. APPLI-TEC does not guarantee suitability of this product for any resultant application or freedom from patent infringement. Furthermore, APPLI-TEC disclaims any liability for incidental and consequential damages of any kind including but not limited to lost profits.

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