are thicker and softer materials that can bridge larger distances between two surfaces based on surface waviness, tolerances, structures, etc.. As a general rule a soft gap filler should not be compressed by more than 1/3 of its thickness to avoid bleeding.
The thermal conductivity ranges from 1.0 to 6.0 W/mK. Since the thickness is higher than for standard films the resulting thermal resistance is also higher.
Typical thickness range for gap filler is between 0.5 mm and 6 mm. This allows for bridging large gaps.
For bridging larger surface differences the materials are softer and more easy to compress. They are measured on the Shore 00 scale with values between 10 – 75 depending on the type. Driven by the ceramic fillers, higher thermal conductivity leads to a harder material.
They show good electrical isolation performance in the 2 – 14 kV/mm dielectric breakdown voltage range.
Typical application areas for Gap Fillers are:
✓ RAM modules
✓ Heat pipe solutions
✓ Automotive engines
✓ Control units
✓ Irregular shaped components
We carry gap fillers from the following manufacturers: