Master Bond EP17HTS-DA is a one-component, no-mix, die-attach epoxy that is electrically conductive and withstands high temperatures. It is a silver-filled system, which typically results in a lower glass transition temperature (Tg). However, the company reports that with this specialty formulation, a high Tg of 140-150°C is maintained; the product passes MIL-STD-883J thermal stability requirements at 200°C.
The epoxy’s strength profile is also reportedly robust, with a die shear strength of 35-40 kg-f at room temperature. EP17HTS-DA meets NASA low outgassing specifications, and its service temperature extends from -80 to 550°F. It has a low volume resistivity of less than 0.005 ohm-cm and also performs well as a heat conductor.
EP17HTS-DA is a thixotropic paste and can reportedly be easily dispensed manually or via automated dispensing systems. This compound is not premixed and frozen and has an unlimited working life at room temperature. It requires a heat cure of 300°F for 2-3 hrs, followed by post curing at 350°F for 1-2 hrs.
Master Bond reports that this product bonds well to many substrates, including metals, ceramics, and plastics. It is recommended for applications where low volume resistivity and high temperature resistance is required. EP17HTS-DA is available for use in syringes and glass jars, in sizes ranging from 20 g to several pounds.
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