Intel Pentium 4 Processor 478-Pin Socket (mPGA478) Design Guidelines

Intel® Pentium® 4 Processor 478-Pin Socket (mPGA478)

Figures

Figure 3-1. Typical Reflow Profile for 63Sn/37Pb solder ......................................................... 14

Figure 4-1. Methodology for Measuring Total Electrical Resistance........................................ 18

Figure 4-2. Methodology for Measuring Electrical Resistance of the Jumper.......................... 18

Figure 4-3. Four Different Jumpers Used in the Package Test Vehicle................................... 19

Figure 4-4. Location of type A, B1, B2 and PJRC daisy chains from pin side of PTV ............. 20

Figure 4-5. Electrical Resistance test vehicle top view ............................................................ 21

Figure 4-6. Inductance Measurement Fixture Cross-section................................................... 26

Figure 4-7. Inductance Fixture Design mounted on the socket ............................................... 26

Figure 4-8. Test fixture mounted bottom view with the pins cut............................................... 27

Figure 4-9. Top view of the Test vehicle.................................................................................. 29

Figure 4-10. Capacitance measurement fixture cross section................................................. 29

Figure 4-11. Capacitance Measurement Configuration ........................................................... 30

Figure 4-12. Capacitance Fixture Design and Measurement Configuration............................ 30

Figure 4-13............................................................................................................................... 32

Figure 5-1. Flow chart of Knowledge-based Reliability Evaluation Methodology..................... 33

Figure 7-1. 478-Pin FC-PGA2 Package Keepouts (IHS not shown)....................................... 36

Figure 7-2. 478-Pin FC-PGA Package (Top View) .................................................................. 37

Figure 7-3. 478-Pin FC-PGA Package (Bottom View)............................................................. 38

Figure 7-4. Package Pin Shoulder Dimensions ....................................................................... 39

Figure 8-1. mPGA478 Socket (Top Isometric View)................................................................ 40

Figure 8-2. mPGA478 Socket Critical-to-Function (CTF) Measurements ............................... 41

Tables

Table 3-1. Socket Critical to Function Dimensions .................................................................. 14

Table 4-1. Electrical Requirements.......................................................................................... 16

Table 4-2. Electrical Definitions................................................................................................ 17

Table 4-3. Socket Positions Daisy Chained............................................................................. 22

Table 5-1. Use conditions environment ................................................................................... 33