05-08-1517

BGA Package
28-Lead (6.25mm × 4mm × 2.22mm)
(Reference LTC DWG # 05-08-1517 Rev Ø)
A1
ccc Z
A
2×
Z
DETAIL A
4
A2
aaa Z
2
SEE NOTES
7
1
PIN 1
A
b1
MOLD
CAP
PIN “A1”
CORNER
b
SUBSTRATE
4
C
F
Z
// bbb Z
B
H1
H2
D
3
D
DETAIL B
E
F
e
Øb (28 PLACES)
G
ddd M Z X Y
eee M Z
X
G
DETAIL B
PACKAGE SIDE VIEW
PACKAGE TOP VIEW
SEE NOTES
3
PACKAGE BOTTOM VIEW
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
2×
aaa Z
e
b
Y
E
DETAIL A
2. ALL DIMENSIONS ARE IN MILLIMETERS
1.2
0.4
0.4
1.2
0.000
DIMENSIONS
0.40 ±0.025 Ø 28x
2.4
1.6
0.8
0.000
0.8
1.6
2.4
SUGGESTED PCB LAYOUT
TOP VIEW
SYMBOL
A
A1
A2
b
b1
D
E
e
F
G
H1
H2
aaa
bbb
ccc
ddd
eee
MIN
2.02
0.30
1.72
0.45
0.37
0.27
1.45
NOM
2.22
0.40
1.82
0.50
0.40
6.25
4.00
0.80
4.80
2.40
0.32
1.50
MAX
2.42
0.50
1.92
0.55
0.43
0.37
1.55
0.15
0.10
0.20
0.15
0.08
TOTAL NUMBER OF BALLS: 28
3
BALL DESIGNATION PER 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
NOTES
5. PRIMARY DATUM -Z- IS SEATING PLANE
6. SOLDER BALL COMPOSITION IS 96.5% Sn/3.0% Ag/0.5% Cu
7
COMPONENT
PIN “A1”
TRAY PIN 1
BEVEL
!
PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE
LAYOUT CAREFULLY
LTMXXXXXX
µModule
PACKAGE IN TRAY LOADING ORIENTATION
BGA 28 0915 REV Ø
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