SMTA International Conference Proceedings


ENVIRONMENT-FRIENDLY VAPOR PHASE CONFORMAL INSULATION OPTIONS FOR RELIABILITY IMPROVEMENT OF ELECTRONICS

Author: Rakesh Kumar
Company: Specialty Coating Systems
Date Published: 10/24/2010   Conference: SMTA International


Abstract: The demand for environment-friendly products in electronic industry is growing to meet the anticipated market and regulatory requirements. This move is forcing material suppliers to come up with new environment-friendly materials to be used in the electronic industry. As the number of advanced electronics is growing, the challenges to make them safe, effective and reliable using halogen-free products are also increasing.

The packaging, protection and reliability of electronics, including pressure and temperature sensors, PCB's, MEMS, a variety of micro and optoelectronic devices, fuel cell components and nano-electronic parts, are becoming more challenging due to long-term performance requirements. Fine geometry parts are more difficult to assemble, particularly with conventional molding, adhesives and coatings, due to difficulty in sealing gaps. Meeting the current demand for environment-friendly products, solvent- and catalyst-free Parylenes, which are applied using vapor phase polymerization, offer solutions to many existing assembly, protective, packaging and reliability challenges of electronic industry, in part because of their excellent electrical & mechanical properties, chemical inertness, long-term thermal stability (including high temperature exposure to over 350oC) and their true conformability to the parts due to their molecular level deposition characteristics.

This presentation highlights key characteristics of environment-friendly and RoHS compliant Parylenes’ impact on electronics. It also discusses comparative advantages over existing conformal coating options for packaging, protection and reliability enhancement of various electronics and their components (metal, plastic, semiconductor and ceramic substrates) from chemical corrosion and other harsh environment effects.

Key words: Parylene, Conformal Coating, Electronics, Reliability



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