FAQs
What is DOWSIL TC-5515 LT used for?
It is a two-part, low-density thermally conductive gap filler used to dissipate heat from electronic devices, electric-vehicle modules, and other heat-generating components. It fills the space between a heat source and a heat sink to form a continuous thermal path, moving heat away for cooler operation.
How thermally conductive is it?
Dow characterizes TC-5515 LT as roughly a 2.0 W/mK gap filler that conducts heat far better than unfilled silicone. That thermal performance, combined with its low density, makes it well suited to demanding thermal management in weight-sensitive assemblies like EV battery packs.
Why is low density important for EV batteries?
A low-density gap filler weighs less than a standard one, and in an electric-vehicle battery pack, reducing weight can improve range and efficiency. TC-5515 LT delivers effective heat dissipation while helping keep the assembly lighter, which is why Dow targets EV battery and power modules.
What does 'non-flowable' mean here?
Non-flowable means the dispensed gap filler holds its shape rather than running or slumping, so it stays in the gap where it is placed. This helps maintain a consistent thermal interface layer between components and heat sinks, supporting reliable heat transfer across the assembly.
How is TC-5515 LT cured?
It is a two-part material that can cure at room temperature or be heat-accelerated for faster processing, giving flexibility to match production throughput. Consult the technical data sheet for the recommended mix and cure schedule, and review the Safety Data Sheet before production use.
