Copper Clad Board, We offer 1/16", 1/32" and 1/64" FR4 laminate with 1 ounce copper per square foot. This flame retardant laminate is translucent in color and made of continuous woven glass cloth impregnated with epoxy resin. The copper on 1 ounce boards is 1.34 mil thick (0.0341 mm, 34.1 microns). The boards are made of FR4 which is a flame retardant material.
Developed specifically for the circuit processing industries' requirements. Complies with UL #E214381 (select boards comply to UL #E213990). Our presensitized boards provide high resolution and excellent fine line control. They are ideal for prototypes, small production runs, and student training. Easy Cutting!! We also offer a large thin (12" x 18" x 1/32 inch) cat#675 paper phenolic presensitized board, perfect for cutting into smaller boards with no special equipment - perfect for the classroom.
Specifications Property Treatment Condition Unit FR-4 Index Peel Strength (As received) A Ib/in >= 8.0 (After thermal stress) A Ib/in >= 8.0 Surface Resistivity at elevated temperature E-24/125 M Ohm >= 103 Volume Resistivity E-24/125 M Ohm cm >= 103 Water Absorption (0.1-0.77MM) E-1/105+des+D-24/23 % <=0.8 (0.78-3.20MM) E-1/105+des+D-24/23 % <=0.35 Flexural Strength (Lengthwise) A Mpa >=410 (Crosswise) A Mpa <=340 Dielectric Breakdown Parallel to laminate D-48/50+D-0.5/23 KV >=40 Dielectric Constant Permittivity at 1MHZ C-40/23/50 <=5.4 Bow and Twist (Double sided) A % <=1.0 Flammability Rating A&E-1/105+des UL 94 V-0 Thermal stress(288C, 20 seconds) Unetched, A No defect After etched A No defect Pressure vessel thermal stress A No defect Dimensional stability E-4/105+des+E-2/150 Um/em +/-5.0 TG DSC C >= 130C TD ( C/TGA 5% wt loss) C 300-310C