LGA Package 144-Lead (16mm × 16mm × 4.41mm) (Reference LTC DWG # 05-08-1915 Rev B) A aaa Z SEE NOTES DETAIL A 0.56 – 0.84 12 11 10 9 8 7 6 5 4 3 2 7 1 A PAD “A1” CORNER B 4 b PAD 1 C D E F MOLD CAP D F SUBSTRATE G H H1 H2 Z // bbb Z J K L DETAIL B e M X SEE NOTES G DETAIL B PACKAGE TOP VIEW e b Ø eee S Z X Y Y E aaa Z DIA (0.630 ±0.025) 144x 3 PACKAGE BOTTOM VIEW 2. ALL DIMENSIONS ARE IN MILLIMETERS 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994 DETAIL A 6.9850 0.630 ±0.025 Ø 144x 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 SUGGESTED PCB LAYOUT TOP VIEW 3 LAND DESIGNATION PER JESD MO-222, SPP-010 4 DETAILS OF PAD #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE PAD #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE DIMENSIONS SYMBOL A b D E e F G H1 H2 aaa bbb eee MIN 4.31 0.60 0.36 3.95 NOM 4.41 0.63 16.0 16.0 1.27 13.97 13.97 0.41 4.00 MAX 4.51 0.66 NOTES 5. PRIMARY DATUM -Z- IS SEATING PLANE 6. THE TOTAL NUMBER OF PADS: 144 7 0.46 4.05 0.15 0.10 0.05 TOTAL NUMBER OF LGA PADS: 144 ! PACKAGE ROW AND COLUMN LABELING MAY VARY AMONG µModule PRODUCTS. REVIEW EACH PACKAGE LAYOUT CAREFULLY LTMXXXXXX µModule COMPONENT PIN “A1” TRAY PIN 1 BEVEL PACKAGE IN TRAY LOADING ORIENTATION LGA 144 0213 REV B