Highest performance dispensable thermal gel offers vertical tackiness

The Chomerics Division of Parker Hannifin has introduced its new THERM-GAP GEL 75VT, a high-performance dispensable thermal gel offering 7.5W/m-K typical thermal conductivity. The fully cured product performs reliably in vertical and high-vibration applications, including those that are mission-critical.

To ensure its appropriateness for conducting heat away from electronics to heatsinks or enclosures in demanding operating conditions, the company subjected the thermal gel to several long-term reliability tests. The product passed automotive vertical slump testing, high-vibration testing and telecommunications thermal material verification processes. With its long-term reliability, it can meet the needs of design engineers who require their new electronic device to deliver consistent thermal performance over many years of challenging, continuous service.

Offering resistance to vertical slump (‘VT’ or vertical tackiness), reliability in high-vibration operating conditions and high thermal performance, this single-component material is suited for use in a wide range of systems. Automotive sensors and devices, telecommunications modules, BESS modules, industrial electronics, network and IT infrastructure, power electronics, and consumer electronics are all among potential beneficiaries.

The thermal gel requires no mixing or secondary curing, while its 15-25g/min flow rate ensures straightforward application and rework/field repair. Only a very low compressive force is required to ensure deformation under assembly pressure. Users can dispense the thermal gel (manually or via automated dispensing machines) at various bond line thicknesses, typically up to 4mm, to fill gaps that result from assembly or manufacturing tolerances.

Fully RoHS-compliant, important electrical properties of THERM-A-GAP GEL 75VT include: 7.9kVac/mm dielectric strength (ASTM D149 test method); 1014Ωcm volume resistivity (ASTM D257); 5.2 dielectric constant at 1,000KHz/0.76mm thick (ASTM D150); and 0.003 dissipation factor at 1,000kHz/0.76mm thick (Chomerics test method).

Manual syringes, plastic cartridges, EFD plastic cartridges, aluminium cartridges, and pail containers are among the packaging choices for GEL 75VT, offering a range of fill volumes up to 2500cc.