News and New Products

Gap filler enhances without silicone

By Bill Schweber -- EDN, 9/25/2003

Silicone is one of the most versatile building-block materials of our industry, yet some applications, such as disk drives, brushed motors, and switch contacts, can’t tolerate its presence or contamination. For this reason, Bergquist offers silicone-free, thermally conductive, electrically isolating gap-filling material. The Gap Pad Sil-Free 1000 is soft, and it complies to applied pressure to form a gap-free filling (Picture). Thermal conductivity is 1W/m-K for high heat transfer.

The material, which is available in thicknesses of 0.015 to 0.125 in. as well as custom thicknesses, is nonhomogenous and has a low-tack rubber coating on one side of an embedded fiberglass reinforcement layer and a tacky lower modulus-gap-filling rubber on the other side. Flame-resistant to UL 94 V-O rating, the material costs 15 cents/sq in.

Bergquist Co, 1-800-347-4572, www.bergquistcompany.com.