DS DSEN 61249-2-21 2004-APR-05 Materals for prnted boards and other nterconnectng structures - Part 2-21 Renforced base materals clad and unclad - Non-halogenated epoxde woven E-glass renforced lamnated sheets of defned flammablty vertcal burnng test copper-clad
This specification gives requirements for properties of non-halogenated epoxide woven Eglass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad of thicknesses 0,05 mm to 3,2 mm. The flammability rating is achieved through the use of non-halogenated inorganic and/or organic compounds acting as fire retardants. These fire retardants are contained as part of the polymeric structure or in addition to it. The glass transition temperature is defined to be 120 °C minimum.
