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Gold Removal Issues with Hollow Cup Connectors

Question: We are having a hard time with the removal of gold from hollow cup connectors. Using lead free solder, we are wicking the solder out with braid, but what is happening is that the pins are getting overheated and coming loose from the connector. Are there other methods we could explore?

Answer: I understand your methodology is loosening the pins which is a result of the softening up the plastic housing from excessive heat. Another way to remove the solder is to suck it out with a hot air tool offered by manufactures such as Metcal, JBC, Pace, or others providing tools of this type. Size the tip to the style of connector being used and this will reduce your problems as the hot air tool will pull the solder directly out of the cup. Manual solder suckers areĀ  definitely better than using braid solder, as less time is being used to reflow the solder in the cup and remove it resulting in less heat application and possible softening of the surrounding connector materials.

The other option, if you have the luxury, is to get the components with gold pins, without the gold cup, so they do not need to processed at all as you mentioned above.