0709 Polyurethane Adhesive

0709 is a dark gray, thermally conductive, precision mixed, degassed, and frozen polyurethane adhesive compound for advanced electronic assembly. 0709 (Hacthane 121 B‐1) is HMS‐2353, Type IV certified. This thixotropic compound is suitable for electronic bonding, staking, and may be used as a fillet as well. 0709 has a thermal conductivity of 0.9 W/mK, ideal for heat dissipation of components. 0709 cures to a tough and flexible material with low modulus and a very low Glass Transition Temperature (Tg). The cured material’s ability to not crack or harm bonded rigid components during thermal cycling provides a major advantage, as it will not compromise the integrity of the component. The CTE of 0709 is lower than conventional polyurethane elastomers, while retaining relatively low modulus. 0709 provides thermal conductivity and strain relief for many staking applications.