Peter,
We have made pallets 12mm and thicker ( using caps
on the bottom of the pallet). While it does require parameter changes onteh
wave, it is not particuarly uncommon. Most of the customers who use them have
pretty experienced process guys setting up the wave. You do have to be carefull
on how much clearance you have till you actually interferre with the solder
nozzle.
Special care has to be taken in the pallet design
to keep from having excess pressure build up under the pallet. We have seen
pallets that caused solder to squirt out the sides and make quite a
mess.
If you would like to disucss this in more detail,
give me a buzz.
Bill Johnson
GSC
Garland Service
972-494-1911
----- Original Message -----
Sent: Monday, September 30, 2002 3:14
PM
Subject: [TN] Wave soldering pallet
thickness
Technet,
What
is the thickest selective wave soldering pallet that’s been used out
there?
I
am doing DFM on a double sided THT/ SMT product with a few bottom side SMT
components about 11mm high. I need to provide masking for these devices but at
the same time I am concerned about the excessive wave height required to reach
into the deep pockets.
What
are other options to process the board through SMT/wave
soldering?
Rgds,
Peter
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