LGA Package 141-Lead (15mm × 15mm × 2.82mm) (Reference LTC DWG # 05-08-1840 Rev B) 12 A aaa Z SEE NOTES DETAIL A 11 10 9 8 7 6 5 4 3 2 7 1 M L b K J H MOLD CAP SUBSTRATE G F D E Z bbb Z F H1 H2 D DETAIL B C B e 0.630 ±0.025 SQ. 143x PIN “A1” CORNER A eee S X Y 4 X aaa Z DETAIL B PACKAGE SIDE VIEW G 3 PACKAGE BOTTOM VIEW NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994 DETAIL A 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 PACKAGE TOP 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 DIMENSIONS SYMBOL A b D E e F G H1 H2 aaa bbb eee MIN 2.72 0.60 0.27 2.45 NOM 2.82 0.63 15.00 15.00 1.27 13.97 13.97 0.32 2.50 MAX 2.92 0.66 NOTES 3 BALL DESIGNATION PER JESD MS-028 AND JEP95 4 DETAILS OF PIN #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE PIN #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE 5. PRIMARY DATUM -Z- IS SEATING PLANE 6. THE TOTAL NUMBER OF PADS: 141 7 0.37 2.55 0.15 0.10 0.05 TOTAL NUMBER OF LGA PADS: 141 ! PACKAGE ROW AND COLUMN LABELING MAY VARY AMONG µModule PRODUCTS. REVIEW EACH PACKAGE LAYOUT CAREFULLY LTMXXXXXX µModule 6.9850 SUGGESTED PCB LAYOUT TOP VIEW C(0.22 x 45°) PAD 1 e b SEE NOTES Y E COMPONENT PIN “A1” TRAY PIN 1 BEVEL PACKAGE IN TRAY LOADING ORIENTATION LGA 141 1212 REV B