Electronics Forum | Mon Aug 01 08:38:57 EDT 2005 | kamrant
Joseph, What is the topside temp reading of your board before reaching the pot? Do you have top-heater in your wave machine? It sounds like; you got an insufficient per-heating issue.
Electronics Forum | Mon Aug 01 20:02:20 EDT 2005 | Joseph
We use SAC305 and top side particular joint temp. is 110 deg C, and the terminal finish for that particular lead is pure tin. It look like hot tearing at the primary side of PTH.
Electronics Forum | Wed Aug 03 09:58:16 EDT 2005 | Rob
http://www.micromat.co.uk/economy.htm We've got one of these & it's been great - whether for depanelising, making wave solder pallets, SMT flexi carriers, drilling prototype pcbs etc. Really easy to programme too.
Electronics Forum | Mon Aug 08 19:26:22 EDT 2005 | Tom B
That uis correct if your wanting solderable gold it should be 10-17uinches, but for coantact suchas as switches and card edge 30 is used
Electronics Forum | Mon Aug 08 20:25:39 EDT 2005 | plcc
Hi Davef, I'm suspecting that too! The recipe we are using is the optimum for good soldering results. I'm checking with our supplier on the type of pcb material. Do you know the recommended material for pcb undergoing reflow, under ROsH condition?
Electronics Forum | Mon Aug 08 21:34:44 EDT 2005 | davef
Jim Can you be more specific? What's going "yellow / beige" on you? * Laminate * Solder mask * Legend
Electronics Forum | Mon Aug 08 22:40:49 EDT 2005 | davef
Jim Can you be more specific? What's going "yellowish" on you? * Laminate * Solder mask * Legend
Electronics Forum | Tue Aug 09 10:38:45 EDT 2005 | SuMoTe
Water soluable dots will wash off after reflow. A water soluable liquid mask will work as well. dots are better for defined (round)holes, whereas the liquid mask works well with odd shapes.
Electronics Forum | Wed Aug 10 15:09:06 EDT 2005 | pr
O.K. thanks, I'll look into it............through a rep, since all our boardhouses are in China/Taiwan. I'm seeing a pattern! thanks, pr
Electronics Forum | Thu Aug 18 13:11:39 EDT 2005 | jsloot
We have our board house apply a peel coat mask that can be brushed off after wave or reflow. You need to brush off while it's still warm.
