Thermal Compound

High-performance electronics contain many components - including central processing units (CPUs), microprocessors units (MPUs), graphics processing units (GPUs), LEDs, field-effect transistors (FETs) and integrated bipolar transistors (IGBT’s), uninterrupted power supplies - that heat up during operation. To ensure long term performance of electronic assemblies an efficient heat management using a reliable, long-lasting thermal interface material (TIM) is needed to transfer heat from these components.

Nordson EFD's innovative, non-silicone thermal compounds provide an ideal thermal solution by ensuring reliable heat transfer over a longer time than most industrial thermal interface materials.

Conventional, silicone-based heat sink compounds and thermal greases tend to spread after a number of heating and cooling cycles (so called pump-out), create voids and lose effectiveness, leading to over heating of electronic components and premature product failure.

Nordson EFD's non-silicone thermal compounds are formulated to virtually eliminate pump-out, ensuring long-lasting thermal management and effective heat transfer.

Features and Benefits
  • Excellent heat transfer
    • Good wetting
    • Low bond line
    • Low thermal resistance
    • High thermal conductivity (high bulk thermal conductivity) for thick-film and gap-fill applications
  • Non-silicone
    • Does not dry out
    • Resists spreading / pump-out
    • Long, reliable performance
  • Water cleanable for easy use and clean-up
  • Optimal rheological properties for dispensing from syringe barrels with hand plungers, or more convenient, precise and consistent application of the thermal compound with Nordson EFD’s line of electro pneumatic dispensers
  • High dielectric strength
  • Long shelf-life stability
  • RoHS and REACH compliant
  • Lead-free



Product Stability for reliable long lasting thermal management

Company A: Standard white thermal grease
Competition - Zero thermal cycles Competition - After 300 thermal cycles: Thermal grease pumps out and creates voids
Zero thermal cycles After 300 thermal cycles: Thermal
grease pumps out and creates voids
Nordson EFD non-silicone thermal compound
EFD - Zero thermal cycles EFD - After 300 thermal cycles: Remains tacky, good wetting, no pump out
Zero thermal cycles After 300 thermal cycles: Remains
tacky, good wetting, no pump out

 

Properties TC70 TC70-340WC TC70-57000
Consistency (Penetration, worked, 60x) 320 340 250 to 350
Specific gravity at 25°C 2.7 2.7 N/A
Bleed 24h %/weight 0.1 (at 200°C / 392°F) 0.0 (at 150°C / 302°F) 0.5 (at 200°C / 392°F)
Evaporation 24h %/weight 0.6 (at 200°C / 392°F) 1.0 (at 150°C / 302°F) 1.0 (at 200°C / 392°F)
Thermal conductivity at 36°C / 97°F: W/m °K 0.92 1.3 2.4
Thermal resistance °C/W 0.09 0.03 0.04
Anticipated minimum bond line (based on filler dimensions) 0.05 mm
2.0 mil
0.0127 mm
0.5 mil
0.0127 mm
0.5 mil
Electrical properties TC70 TC70-340WC TC70-57000
Dielectric strength, 0.05” gap, V/mil 305 265 N/A
Dielectric constant, 25°C / 77°F, 1,000 Hz 4.5 4.5 N/A
Dissipation factor, 25°C / 77°F, 1,000 Hz 0.0029 0.0022 N/A
Volume resistivity, Ohm/cm 1.65x1014 20.0x1014 < 0.01
  TC70 TC70-340WC TC70-57000
Operating temperature range -40°C to 200°C
-40°F to 392°F
-40°C to 180°C
-40°F to 356°F
-40°C to 200°C
-40°F to 392°F
Appearance smooth,
off-white paste
smooth,
white paste
smooth paste