Intel Pentium 4 Processor 423 Pin Socket (PGA423) Design Guidelines

®
423 Pin Socket Design Guidelines
17
Table 2: Socket Critical To Function Dimensions
Dimension Index Minimum in Maximum in
Socket Housing Overall Length
A
2.970 2.990
Socket Housing Overall Width
B
N/A 2.400
Socket Housing Height (pin field)
C
0.210 0.230
Socket Housing Height (cam)
D
0.330 0.350
Socket Flatness – Cover Top
E
N/A 0.010
Socket Through Cavity Length
F
1.100 N/A
Socket Through Cavity Width
G
1.050 N/A
Lever Arm Height in Locked position
H
N/A 0.210 or Must
not exceed the
cover top
surface
Cover Lead-in Chamfer Diameter
HH
Cover Lead-in Chamfer Depth
J
Package pin shoulder MUST be
fully accommodated in the lead-in
feature in the socket cover. 1x
inspection.
Cover Pin Hole True Position
K
N/A 0.010
Cover Pin Hole Diameter
L
0.021 N/A
Cover Travel
M
N/A 0.060
Tab1 Length (cam end)
N
0.395 0.405
Tab2 Length (non-cam end)
NN
0.440 0.450
Tab width
P
0.095 0.105
Tab Curvature Depth
Q
0.020 0.030
Tab Height
R
0.140 0.150
Tab Lip Length
S
0.020 0.030
Solder Tail True Position
V
N/A 0.010
Heat sink protrusion height
W
0.325 0.335
Heat sink protrusion width at top
X
0.079 0.089
Heat sink protrusion edge
Y
0.142 0.152
Gap between heat sink protrusions
Z
1.245 1.255
Tab Height from Socket Bottom
AA
0.090 0.100
HS Protrusion Offset from Tab
BB
0.045 0.055
Socket Flatness – Housing Bottom
EE
N/A 0.010