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Typical Conditions:

• 1hr/cycle

• Long duration time;

-40oC to 125oC, 1000 cycles

• Implicit Transient problem

• Material nonlinear/Creep/Temperature

dependent, Eutectic Solder (63Sn/37Pb) Tm=183oC

FR4 Tg is around 130 oC

20 oC

100 oC

(273 + 20oC)

= 0.6425

(273 + 183oC)

Flip Chip (6mm x 6mm) 1/8 Finite Element Model

(26,262 Solid-3D Elements)

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