Electronics Forum | Fri Nov 08 14:19:59 EST 2019 | dwl
You can try putting titanium stiffeners on the PCB to prevent it from warping. How thick is your stencil? More paste would give you a wider window however too much and you risk bridging. You could try over printing the pad at the heel and toe to get
Electronics Forum | Mon Nov 02 23:12:13 EST 1998 | Kelly
We run stiffeners on all of our product through our wave solder process and most of our product through our reflow and adhesive cure oven. The problem is we continually put on and take off stiffeners because of poor reliability of stiffeners staying
Electronics Forum | Tue Nov 03 12:23:00 EST 1998 | Bill Schreiber
Kelly, How are you cleaning the stiffeners? The Smart Sonic cleaning process has been very successful in such applications. Visit the Smart Sonic Web Site at: www.smartsonic.com Or call me at 1(800) 806-440-R. Regards, Bill | We run stiffeners
Electronics Forum | Wed Nov 04 16:56:27 EST 1998 | Chris Lampron
| | We run stiffeners on all of our product through our wave solder process and most of our product through our reflow and adhesive cure oven. The problem is we continually put on and take off stiffeners because of poor reliability of stiffeners sta
Electronics Forum | Tue Nov 03 10:33:10 EST 1998 | Chrys
| We run stiffeners on all of our product through our wave solder process and most of our product through our reflow and adhesive cure oven. The problem is we continually put on and take off stiffeners because of poor reliability of stiffeners stayi
Electronics Forum | Thu Apr 20 17:51:52 EDT 2006 | Geo
When we have warpage issues we use Titanium Panel Stiffeners even though the stiffeners are mainly used for Wave we find little issue for reflow. Mind you the boards have to be large enough.
Electronics Forum | Thu Jun 17 10:25:43 EDT 1999 | Brian Wycoff
| | We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centr
Electronics Forum | Mon Jun 14 09:23:57 EDT 1999 | C.K.
| We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centre
Electronics Forum | Tue Oct 07 08:44:49 EDT 2014 | emeto
Hi, 1. I will run the board on the mesh if single sided. 2. For double sided board, I will try stiffeners. 3. If stiffeners don't work, then you have to create a handling fixture(holds the board and has enough openings to let the air flow to the PC
Electronics Forum | Tue Feb 23 14:21:17 EST 1999 | Mike McMonagle
| A rash of new products here at my company have designs with multi-pin connectors 90 out-of-phase (orientation)wiht respect to wave direction, which has lead to massive bridging (shorts) problems.... | | Does anyone still use the 45 Degree Pallet
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