Hi Everyone,

We ran some assemblies where after selective soldering with SAC305, the phosphor bronze leads on a Harwin connector look to have been dissolved.  The solder pot temperature is set at 325 deg C and we dwelled on each pin for no more than 3 seconds.  We are using an OA flux.  Harwin tells me that the melting point of the pins is 954 deg C.

We are having the solder in our selective solder pot analyzed to see if there is anything out of spec that could be causing this.

Has anyone else experienced something similar or does anyone have an idea as to what could be causing this?

A photo is available at the following link.
http://ipc-technet.groupsite.com/galleries/show/27385

Thanks
Peter


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