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Hi Peter,

Up to 10mm thick is doable (8mm and thinner is better), but anything thicker than that is pretty challenging. I have used one set of 12mm pallets, but we were able to add deep bottomside channels the length of the pallet, parallel to the direction of flow through the wave. This allowed good solder flow to the TH components. Of course if your tall bottomside components are "in line" with the TH components, then the deep channels will not be possible. I'm sure there are other tricks, just keep in mind that the wave becomes even less predictable than normal when you have to crank up the RPMs to overcome a thick pallet.

I would recommend considering the options that Carrie suggested.

Regards,  Dave

-----Original Message-----
From: Peter Lee [mailto:[log in to unmask]]
Sent: Monday, September 30, 2002 2:15 PM
To: [log in to unmask]
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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