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

Intel® Pentium® 4 Processor 478-Pin Socket (mPGA478)
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4.
Electrical Requirements ............................................................................................................. 16
4.1. Electrical Requirements ................................................................................................ 16
4.2. Definitions...................................................................................................................... 17
4.3. Socket Electrical Characterization................................................................................. 17
4.4. Electrical Resistance ..................................................................................................... 17
4.5. Determination of Maximum Average Resistance.......................................................... 24
4.6. Inductance..................................................................................................................... 25
4.6.1. Procedure for Inductance Measurements:.................................................. 27
4.6.2. Correlation of measurement and model data Inductance........................... 28
4.7. Pin-to-Pin Capacitance:................................................................................................. 28
4.7.1. Procedure for Capacitance Measurements:................................................ 30
4.8. Dielectric Withstand Voltage ......................................................................................... 31
4.9. Insulation Resistance .................................................................................................... 31
4.10. Contact Current Rating.................................................................................................. 31
5. Environmental Requirements..................................................................................................... 33
5.1. Porosity Test.................................................................................................................. 34
5.1.1. Porosity Test Method .................................................................................. 34
5.1.2. Porosity Test Criteria................................................................................... 34
5.2. Plating Thickness .......................................................................................................... 34
5.3. Solvent Resistance........................................................................................................ 34
5.4. Durability........................................................................................................................ 34
6. Documentation Requirements ................................................................................................... 35
7. Appendix Z.1.............................................................................................................................. 36
8. Appendix Z.2.............................................................................................................................. 40