Surface mount conductive adhesives

A screen-printable surface mount conductive adhesive comprising:

• (a) about 4 to about 12 parts by weight of a binder resin selected from the group consisting of acrylated urethane resin, acrylic resin, and mixtures thereof;
• (b) about 3 to about 13 parts by weight of a diacrylate monomer;
• (c) about 0.1 to about 1 parts by weight of 2,5-dimethyl-2,5-bis(2-ethyl hexanoyl peroxy);
• and
• (d) about 75 to about 88 parts by weight of silver flakes having an average particle diameter from about 0.1 to about 10 microns;
• said the uncured conductive adhesive composition has a viscosity from about 10,000 to about 700,000 centiposes at 25.degree. C. and a surface resistivity of less than about 1 ohm-cm.

An electrical component surface mounted onto a substrate by means of a surface mount conductive adhesive composition which before curing comprises:

• (a) about 2 to about 15 parts by weight of a binder resin selected from the group consisting of acrylated urethane resin, acrylic resin, and mixtures thereof;
• (b) about 2 to about 15 parts by weight of an acrylate monomer;
• (c) about 0.01 to about 3 parts by weight of a free radical initiator;
• and
• (d) about 72 to about 95 parts by weight of finely divided silver particles.