A1 BALL CORNER 425-Ball Chip Scale Package Ball Grid Array [CSP_BGA] (BC-425-1) Dimensions shown in millimeters 19.20 19.00 SQ 18.80 22 20 18 16 14 12 10 8 6 4 2 23 21 19 17 15 13 11 9 7 5 3 1 A C E G 17.60 BSC SQ J L N R 0.80 BSC TOP VIEW 1.50 1.36 1.21 U W B D F H K M P T V Y AA AB AC BOTTOM VIEW DETAIL A 0.65 NOM DETAIL A 0.35 NOM 0.30 MIN 0.35 NOM SEATING PLANE 1.11 1.01 0.91 *0.50 COPLANARITY 0.20 0.45 0.40 BALL DIAMETER *COMPLIANT TO JEDEC STANDARDS MO-205 WITH THE EXCEPTION TO PACKAGE BALL THICKNESS. 061708-A a