LTM8045
20
8045fc
For more information www.linear.com/LTM8045
package DescripTion
Please refer to http://www.linear.com/product/LTM8045#packaging for the most recent package drawings.
5. PRIMARY DATUM -Z- IS SEATING PLANE
6. SOLDER BALL COMPOSITION IS 96.5% Sn/3.0% Ag/0.5% Cu
7 PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE
LAYOUT CAREFULLY
!
PACKAGE TOP VIEW
4
PIN “A1”
CORNER
Y
X
aaa Z
aaa Z
DETAIL A
PACKAGE BOTTOM VIEW
3
SEE NOTES
SUGGESTED PCB LAYOUT
TOP VIEW
0.000
0.635
1.905
0.635
3.175
1.905
4.445
3.175
4.445
2.540
1.270
2.540
1.270
0.3175
0.3175
0.000
H
G
F
E
D
C
B
A
12345
PIN 1
2.8575
3.4925
BGA 40 1212 REV A
LTMXXXXXX
µModule
TRAY PIN 1
BEVEL
PACKAGE IN TRAY LOADING ORIENTATION
COMPONENT
PIN “A1”
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS
BALL DESIGNATION PER JESD MS-028 AND JEP95
4
3
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
DETAIL A
Øb (40 PLACES)
DETAIL B
SUBSTRATE
0.27 – 0.37
3.95 – 4.05
// bbb Z
A
A1
b1
ccc Z
DETAIL B
PACKAGE SIDE VIEW
MOLD
CAP
Z
M
X YZddd
M
Zeee
SYMBOL
A
A1
A2
b
b1
D
E
e
F
G
aaa
bbb
ccc
ddd
eee
MIN
4.72
0.50
4.22
0.71
0.60
NOM
4.92
0.60
4.32
0.78
0.63
11.25
6.25
1.27
8.89
5.08
MAX
5.12
0.70
4.42
0.85
0.66
0.15
0.10
0.20
0.30
0.15
NOTES
DIMENSIONS
TOTAL NUMBER OF BALLS: 40
A2
D
E
e
b
F
G
BGA Package
40-Lead (11.25mm × 6.25mm × 4.92mm)
(Reference LTC DWG # 05-08-1867 Rev A)
7
SEE NOTES
