a PIN 1 INDICATOR 20-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 4 x 4 mm Body, Very Very Thin Quad (CP-20-10) Dimensions shown in millimeters 4.10 4.00 SQ 3.90 0.30 0.25 0.20 0.50 BSC 20 16 PIN 1 INDICATOR 15 1 EXPOSED PAD 5 2.65 2.50 SQ 2.35 11 TOP VIEW SEATING PLANE 6 10 BOTTOM VIEW 0.25 MIN 0.05 MAX 0.02 NOM COPLANARITY 0.08 0.20 REF COMPLIANT TO JEDEC STANDARDS MO-220-WGGD. 061609-B 0.80 0.75 0.70 0.50 0.40 0.30