Is there any way to solder the stack through PC/104 bus connectors to a module PCB other than by hand soldering?
The unique self-stacking capability of the PC/104 bus is made possible by the bus connectors. This arrangement is unique as the bus connectors are hermaphroditic interconnects i.e., a single bus connector functions as both plug and receptacle. The long .025 square tails of a bus connector on the solder side of an upper module plug into the receptacle side of the bus connector on a lower module. The basics of a reliable separable interconnection for signal level contacts require a noble metal finish (typically gold) on both plug and receptacle contacts. Therefore, any solder deposits on the mating portion of the connector tails would result in an unreliable connection. This rules out wave or localized solder fountain soldering. Solder preforms are an option to hand soldering. There are several drawbacks to using solder preform donuts; additional raw material cost, additional labor to install the loose donuts on each connector contact tail, retaining the donuts on the contact tails so th
