05-08-1861

LGA Package
121-Lead (15mm × 15mm × 2.82mm)
(Reference LTC DWG# 05-08-1861 Rev B)
aaa Z
SEE NOTES
DETAIL A
15
BSC
X
2.72 – 2.92
Y
11
10
9
8
7
6
5
4
3
2
7
1
A
B
PAD 1
CORNER
C
4
D
E
15
BSC
12.70
BSC
MOLD
CAP
F
SUBSTRATE
G
0.27 – 0.37
H
Z
// bbb Z
2.45 – 2.55
J
1.27
BSC
K
DETAIL B
L
aaa Z
PADS
SEE NOTES
PACKAGE TOP VIEW
DIA (0.630) 121x
3
PACKAGE BOTTOM VIEW
DETAIL B
6.350
5.080
3.810
2.540
1.270
0.000
1.270
2.540
3.810
5.080
6.350
0.955
1.585
eee S X Y
12.70
BSC
6.350
DETAIL A
5.080
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
3.810
2. ALL DIMENSIONS ARE IN MILLIMETERS
2.540
1.270
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
0.000
0.955
1.585
1.270
5. PRIMARY DATUM -Z- IS SEATING PLANE
2.540
6. THE TOTAL NUMBER OF PADS: 121
3.810
7
5.080
!
PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE
LAYOUT CAREFULLY
6.350
SUGGESTED PCB LAYOUT
TOP VIEW
SYMBOL TOLERANCE
aaa
0.15
bbb
0.10
eee
0.05
LTMXXXXXX
µModule
COMPONENT
PIN “A1”
TRAY PIN 1
BEVEL
PACKAGE IN TRAY LOADING ORIENTATION
LGA 121 1212 REV B
PAD 1
DIA (0.630)
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