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Dow introduces thermal interface material with strong thermal conductivity

Easy-to-dispense gap filler
Dow introduces thermal interface material with strong thermal conductivity

DOW Dowsil TC-4040 thermal interface material
The Dowsil TC-4040 dispensable thermal pad is a high thermally conductive material that supports efficient assembly. Source: Dow

Dow introduced the Dowsil TC-4040 dispensable thermal pad, a thermal interface material (TIM) that is easy to dispense, resists slumping and provides strong thermal conductivity, a key property in 5G designs with higher heat caused by greater power densities. This two-part TIM and gap filler allow electronic designers to replace traditional, fabricated pads of various thicknesses with a single UL 94 V-0 material for dispensing or printing through a choice of manual and automated processes. It supports either room temperature or accelerated curing and delivers highly reliable thermal and mechanical performance.

“Thermal interface materials for telecom and network equipment and other advanced devices need to dissipate significant amounts of heat in 5G network and cloud computing systems,” said Samuel Liu, Marketing Manager and Segment Leader. “At the same time, manufacturers need new material solutions that enable reduced labor costs and more efficient assembly. Our new Dowsil TC-4040 dispensable thermal pad is an innovative addition to Dow’s strong and growing portfolio of thermally conductive materials. Its launch underscores Dow’s ongoing commitment to its customers to develop cutting-edge materials that provide a precise balance of properties for outstanding thermal and mechanical performance.”

The company’s dispensable thermal pad supports automated dispensing, stencil printing and screen printing. Piston pump and plunger metering is recommended for dispensing because of the material’s high filler loading. Dowsil TC-4040 dispensable thermal pad offers a superior extrusion rate and delivers precise component coverage with needle dispensing. This high thermally conductive material (4.0 W/mk) has a working time of two to four hours.

The Dowsil TC-4040 is a reworkable gap filler that is supplied as a two-part liquid component kit and has a shelf life of up to six months at room temperature due to its dependable material properties and ease-of-storage. It has excellent reliability of thermal management performance that can resist various harsh environmental testing (e.g. 1000-hour aging test at 150 °C, 1000 cycles thermal shock from –45 °C to 125 °C and 1000-hour 85/85 % RH (high-temperature/high-humidity) aging test).


Company contact

DOW
2211 H. H. Dow Way
Midland, Michigan 48674 USA
Tel.: +1 (989) 636–1000
Website: www.dow.com

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