One of our core products at NEDC is thermal gap pads. Oftentimes when engineering a new thermal pad into a design, one of the key considerations along with thermal conductivity of the pad is the softness and compliance of it. How well the pad wets out onto the interface can make a huge impact on how well it conducts heat out of the application. There is a grouping of ultra-low modulus pads that help with this from Henkels’ Bergquist. These pads are the ULM(ultra low-modulus) group.
What Thermal Pads are these?
There are currently 5 thermal gap pads that make up the ultra-low modulus family of gap pads. All five pads are silicone based, and have the UL 94 V0 rating. These 5 thermal gap pads make up a family of pads that are very soft/complaint but also are high thermal conductivity thermal pads. The Young’s Modulus is given below to give the reader an idea of how complaint these thermal pads are. That is how these thermal pads exhibit such great thermal performance. In addition, all of these pads exhibit great electrical insulation performance. Lastly, all these pad exhibit a naturally tackiness on both sides to aid in thermal performance.
Ultra-Low Modulus GAP PAD Selection
GAP PAD 3500ULM– 4 psi Young’s Modulus, 3.5 W/m-K, Color Grey, 70 Durometer Shore 000, Available in Thicknesses 0.020”-0.125” Datasheet Download
GAP PAD 6000ULM– 6 psi Young’s Modulus, 6 W/m-K, Color Grey, 60 Durometer Shore 000, Available in Thicknesses 0.040-0.125” Datasheet Download
GAP PAD TGP 7000ULM– 22 psi Young’s Modulus, 7 W/m-K, Color Grey, 75 Durometer Shore 000 Thicknesses Available: .020” – 0.125” Datasheet Download
GAP PAD TGP 10000ULM– 25 psi Young’s Modulus, 10 W/m-K, Color Grey, 75 Durometer Shore 000, Thicknesses Available: 0.040”-0.125” Datasheet Download
GAP PAD TGP 12000ULM- 15 psi Young’s Modulus, 12 W/m-K, Color Grey or Red, 68 Durometer Shore 000, Available in thicknesses from .040-0.125” (this is currently the best thermal pad available that NEDC can find. Due to its ability to wet-out, along with its amazing thermal performance). Datasheet Download
Cutting of Thermal Pads
In conclusion, NEDC sells or converts high thermal conductive thermal pads for its customer. NEDC die-cuts, or otherwise converts Gap Pad sheets into finished Gap Pad preforms for applications. For more information on thermal gap filling pads, or you believe you have an application that could utilize one of these pads, please contact sales@nedc.com.