05-08-1824

LGA Package
28-Lead (15mm × 9mm × 2.82mm)
(Reference LTC DWG # 05-08-1824 Rev A)
SEE NOTES
DETAIL A
2.69 – 2.95
7
aaa Z
7
6
5
4
3
2
1
PAD 1
A
PAD “A1”
CORNER
B
4
C
D
E
15.00
BSC
12.70
BSC
MOLD
CAP
F
G
SUBSTRATE
H
0.290 – 0.350
2.400 – 2.600
J
Z
bbb Z
DETAIL B
K
L
aaa Z
0.630 ±0.025 Ø 28x
X
9.00
BSC
eee S X Y
Y
DETAIL B
3.810
2.540
1.270
0.000
1.270
2.540
PACKAGE TOP VIEW
3.810
7.620
BSC
1.27
BSC
PADS
SEE NOTES
3
PACKAGE BOTTOM VIEW
DETAIL A
6.350
5.080
0.000
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS
3
LAND DESIGNATION PER JESD MO-222
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
5. PRIMARY DATUM -Z- IS SEATING PLANE
COMPONENT
PIN “A1”
LTMXXXXXX
µModule
6. THE TOTAL NUMBER OF PADS: XX
7
!
PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE
LAYOUT CAREFULLY
SUGGESTED PCB LAYOUT
TOP VIEW
PACKAGE IN TRAY LOADING ORIENTATION
LGA 28 0113 REV A
5.080
6.350
TRAY PIN 1
BEVEL
SYMBOL TOLERANCE
aaa
0.15
bbb
0.10
eee
0.05
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