Thermal materials for PV panels and inverters, gap fillers, encapsulants, and interface materials that protect power electronics through decades of field exposure.
A string inverter dissipates 50–150 W of heat inside a sealed IP65 enclosure exposed to direct sunlight, rain, and temperature swings from −25 °C to +60 °C, for a warranty period of 20 to 25 years. IGBT and SiC switching devices push junction temperatures past 150 °C during peak generation. The thermal interface materials and encapsulants that move this heat to the heatsink must survive thousands of thermal cycles without cracking, pump-out, or loss of adhesion.
HeTone supplies field-proven gap fillers, potting compounds, and conformal coatings from Henkel, Bergquist, and Parker Chomerics, selected and validated for the long-life reliability that solar OEMs must guarantee. We match material selection to your enclosure design, gap tolerances, and IEC 62109 safety requirements.
Licensed materials, the components around them, and the engineering to sign the system off.
Gap fillers and pads (1.0–6.0 W/m·K) that pull heat from IGBTs and SiC MOSFETs into the heatsink, sized for your stack-up gap and compression tolerance, maintaining thermal resistance below specification through 2,000+ power cycles.
Two-part silicone and polyurethane systems that protect PCBs, magnetics, and bus bars from moisture, salt fog, and thermal cycling in IP65/IP67 outdoor enclosures, with UL 94 V-0 flame ratings where required.
Material selection backed by accelerated thermal-cycling (IEC 61215), damp-heat, and UV-ageing data, matched to the 25-year field life your product warranty has to cover.
Representative materials we supply for this domain, the exact set is qualified to your design.
Tell us your application and constraints, we will qualify a material system for it.