LTM8031
19
8031fb
package DescripTion
LGA Package
71-Lead (15mm × 9mm × 2.82mm)
(Reference LTC DWG # 05-08-1823 Rev Ø)
9.00
BSC
PACKAGE TOP VIEW
LGA 71 0108 REV Ø
15.00
BSC
4
PAD 1
CORNER
3
PADS
SEE NOTES
X
Y
aaa Z
aaa Z
2.670 – 2.970
DETAIL A
PACKAGE SIDE VIEW
DETAIL A
SUBSTRATE
MOLD
CAP
0.27 – 0.37
2.40 – 2.60
bbb Z
Z
1.270
BSC
0.635 ±0.025 SQ. 71x
12.700
BSC
7.620
BSC
PAD 1
Ø (0.635)
PACKAGE IN TRAY LOADING ORIENTATION
2.540
2.540
1.270
5.080
5.080
6.350
6.350
3.810
3.810
0.000
1.270
3.810
3.810
2.540
2.540
1.270
1.270
0.000
SUGGESTED PCB LAYOUT
TOP VIEW
LTMXXXXXX
µModule
TRAY PIN 1
BEVEL
COMPONENT
PIN 1
PACKAGE BOTTOM VIEW
67 5 1234
L
K
J
H
G
F
E
D
C
B
A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS
LAND DESIGNATION PER JESD MO-222, SPP-010 AND SPP-020
5. PRIMARY DATUM -Z- IS SEATING PLANE
6. THE TOTAL NUMBER OF PADS: 71
4
3
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
DETAIL A
S
YXeee
DETAIL A
SYMBOL
aaa
bbb
eee
TOLERANCE
0.15
0.10
0.05
1.27
BSC
