Plastic Packages for Integrated Circuits Package Outline Drawing Q144.20x20C 144 LEAD THIN QUAD FLATPACK PACKAGE (TQFP) Rev 0, 2/12 MILLIMETERS D SYMBOL D1 D2 A A2 A1 - 0.05 S -D- MIN -B- -A- e b L1 E E1 E2 4X aaa C A-B D bbb H A-B D 0.05 0.10 0.95 1.00 1.05 0.037 0.039 0.041 0.15 0.002 0.004 0.006 D 22.00 BSC D1 20.00 BSC 0.866 BSC 0.787 BSC E 22.00 BSC 0.866 BSC 20.00 BSC 0.787 BSC R2 0.08 - 0.20 0.003 R1 0.08 - - 0.003 - - θ 0° 3.5° 7° 0° 3.5° 7° ccc C -C- SEATING PLANE - 0.008 θ1 0° - - 0° - - θ2 11° 12° 13° 11° 12° 13° θ3 11° 12° 13° 11° 12° 13° c 0.09 - - 0.008 L 0.45 L1 S 0.20 0.004 0.60 0.75 0.018 0.024 0.030 1.00 REF 0.20 - 0.039 REF - 0.008 - - 144L MILLIMETERS θ MAX A2 C SEE DETAIL "X" NOM A1 ddd M C A-B s D s θ1 θ2 MIN 1.00 1.10 1.20 0.039 0.043 0.047 TOP VIEW SIDE VIEW MILLIMETERS MAX A E1 4X NOM MILLIMETERS SYMBOL MIN NOM MAX MIN NOM MAX b 0.17 0.20 0.27 0.007 0.008 0.011 e 0.50 BSC 0.020 BSC D2 17.50 0.689 E2 17.50 0.689 TOLERANCES OF FORM AND POSITION aaa 0.20 0.008 bbb 0.20 0.008 ccc 0.08 0.003 ddd 0.08 0.003 NOTES: R1 R2 GAUGE PLANE 0.25mm -H- L θ3 S DETAIL "X" 1. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0.25mm per side. D1 and E1 are maximum plastic body size dimensions including mold mismatch. 2. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall not cause the lead width to exceed the maximum b dimension by more than 0.08mm. Dambar cannot be located on the lower radius or the foot. Minimum space between protrusion and an adjacent lead is 0.07mm for 0.4mm and 0.5mm pitch packages. 3. Control dimensions are in millimeters. 1