The Kester FL250D is a no-clean, air or nitrogen reflowable solder paste specifically designed for automotive requirements. FL250D is compatible with post-soldering process chemicals, including conformal coatings and potting compounds. - FL250D is capable of stencil printing downtimes of up to 90 min with an effective first print at 20 mils. FL250D also has the capability of printing up to 8 in/sec (200 mm/sec) with squeegees or within an enclosed head.