Industrial power-control assembly designers often place heat-generating components on a separate metal-substrate printed circuit board (PCB) that acts as a natural heat sink, then put heat-sensitive components on a standard PCB and interconnect the two.
Problems arise when different thermal expansion characteristics between the two boards stress interconnecting solder joints, and reduce reliability. The "S"-terminal design provides six-direction flexibility to absorb excess stress in solder joints and increase system reliability.
Joe Lynch, Autosplice, Inc., (E) 10121 Barnes Canyon Rd., San Diego, CA 92121; (619) 535-0077.
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