Electronics Forum | Wed Feb 28 19:48:11 EST 2001 | davef
If we were talking about a single board problem, we�d be thinking about the laminate, but since you imply the problem is broad-based across multiple assemblies, consider the following machine parameters: * Crank-up preheat time / temperature to driv
Electronics Forum | Thu Apr 05 22:24:32 EDT 2001 | davef
I think your solder mask is a partial cause of your solder balling. Additionally, adjusting some machine set-up parameters may also help. 1 If we were talking about a single assembly problem, we�d be thinking about the laminate, but since you say t
Electronics Forum | Thu Oct 14 23:01:48 EDT 1999 | Dennis O'Donnell
With loaded boards, warpage can be removed by placing the assembly in a wave solder conveyor pallet as you would if you were going to wave solder the assembly. Place board and fixture in a Blue M forced air oven at 90 C for 30 minutes. Let cool to r
Electronics Forum | Tue Aug 31 08:10:38 EDT 1999 | Brian Conner
| I am building a board with T1/34 LED's in a 10X10 array there are 12 arrays in a panel. The LED's are body to body in the array, .1 spaced. The LEDS have been autoinserted on a Universal RAD III, so they are cut and clinched. The trouble I am havin
Electronics Forum | Sun May 21 23:29:38 EDT 2017 | zsoden
Hi all, We run an old Seho 1135C wave solder with a 63/37 pot at 250°C. It has been running well for a couple of years but we have noticed lately that all of the larger pads (terminal blocks, transformers, etc.) require additional solder to be appli
Electronics Forum | Sun Mar 07 09:24:55 EST 1999 | Scott Cook
| Hi Ya'll... | it's a Soltec Prisma and the conveyer keeps jamming. What it's doing is up at the exit end where the drive motor is, the chain keeps wrapping itself around the drive sprocket and jamming...this is on the backside rail, the frontside
Electronics Forum | Sat May 27 02:52:20 EDT 2006 | TimS
Gentlemen I have managed to pull myself together after banging my head. I am not sure the flux volume is the total solution here. All spray processes deposit flux in a similar manner, that is to say the vast majority of material sprayed onto the PCB
Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
Electronics Forum | Wed Jun 02 15:27:27 EDT 1999 | JohnW
| | Hi, | | | | To improve the Design For Manufacturing I am currently looking to write down some design rules that can (and should be) used by our engineering department. | | | | Can somebody help me get started or give some usefull tips on where
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