Intel Pentium 4 Processor in the 478-PinPackage at 1.40 GHz, 1.50 GHz, 1.60 GHz, 1.70 GHz, 1.80 GHz, 1.90 GHz, and 2GHz

Package Mechanical Specifications
Datasheet 49
Figure 24 details the keep-In specification for pin-side components. The Pentium 4
processor in the 478-pin package may contain pin side capacitors mounted to the
processor package.
Figure 26 details the flatness and tilt specifications for the IHS. Tilt is measured with the
reference datum set to the bottom of the processor interposer.
NOTES:
1. Pin plating consists of 0.2 micrometers Au over 2.0 micrometer Ni.
2. 0.254 mm diametric true position, pin to pin.
Figure 24. Processor Cross-Section and Keep-In
Figure 25. Processor Pin Detail
13.97mm
1.25mm
IHS
FCPGA
Component Keepin
Socket must allow clearance
for pin shoulders and mate
flush with this surface
Substrate
13.97mm
1.25mm
IHS
FCPGA
Component Keepin
Socket must allow clearance
for pin shoulders and mate
flush with this surface
Substrate
2
PINHEAD DIAMETER
Ø0.65MAX
KEEP OUT ZONE
Ø1.032MAX
2.03±0.08
SOLDER FILLET HEIGHT
0.3 MAX
ALL DIMENSIONS ARE IN MILIMETERS
Ø 0.305±0.025