Hello, Technetts:

We are experiencing a big problem with solder balls attaching to the bottom 
of a through-hole connector during wave soldering.
We just switched  to NoClean chemistry (Alpha NR300A2 water based flux).   
Solder pallets are used during wave soldering. There is an opening for the 
connector in the pallet and connector's plastic body (made from GM7001) 
emerges into the solder pot during soldering.
I guess, we have had this problem before , but the solder balls were washed 
away during the wash process.
The solder balls on the bottom of the connector are not acceptable per 
customer spec.
Any suggestions would be appreciated.

Thank you, Stella Neyman
Lectron Products
ph. 248-608-7289 

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