Electronics Forum | Mon Mar 13 10:45:44 EST 2006 | muse95
The original issue was Co. does not need to go Pbfree, but some BGA's they use are only available Pbfree. They don't want to throw away Pb BGA stock, so some boards might have a combination of both Pb and Pbfree BGAs. The question basically was Shou
Electronics Forum | Sun Apr 25 19:03:13 EDT 1999 | Steve Gregory
| Again, I know this does not answer your needs. I do believe there to be a cheaper system than ours that will satisfy your needs. Big Steve found one that seems fairly reasonable for less damandig boards than ours. | | Earl Moon Hi Joe! Yeah Earl
Electronics Forum | Thu Oct 01 17:15:50 EDT 2020 | spoiltforchoice
Stress concerns, spread over 50 pins. Madness, but then people do still seem to have a level of paranoia with SMT. Here we'd suck it up and handsolder them, and the operatives would not be happy about it.
Electronics Forum | Fri Dec 04 13:17:14 EST 2020 | cyber_wolf
As a side note, you get to clean up all the paste that pukes on the bottom heaters of your reflow oven.
Electronics Forum | Thu Dec 17 16:15:56 EST 2020 | itmconsulting
I have found that if you keep lead protrusion below the PCB at less than or equal to 0.030", you will not get icicling or "paste pukes"...
Electronics Forum | Wed Sep 30 13:49:06 EDT 2020 | emeto
I would prefer wave for this parts, but if it not an option, cut 6-8mil stencil and double stroke it on the printer. All the rest is adding additional steps/labor/cost that is not worth it.
Electronics Forum | Thu Dec 17 16:02:41 EST 2020 | proceng1
I think over printing is the best option, and I like the idea of ordering a test stencil with increasing sized apertures. Make sure you go beyond what you think will work, just so you know where line is.
Electronics Forum | Wed Jan 20 07:31:58 EST 2021 | denism
Hi, Option 3 is quite often used, while it is better to glue with uv glue using uv lamps for curing. For this process, two inverters are needed in the line, a dispenser for UV glue and a UV lamp (eg metronelec UV CURE OVEN). It is better to use prefo
Electronics Forum | Wed Sep 30 21:48:13 EDT 2020 | kylehunter
> If you could change the design, a 2x25 1.27mm > pitch surface mount connector is a standard part > from Wurth. Samtec also do versions in any pin > count you might desire, with locating pins, > without, with picking clip etc.
Electronics Forum | Mon Aug 25 20:49:27 EDT 2003 | msimkin
Anyone use glass filled nylon connectors utilising the intrusive reflow techique (pin in paste). We are having probe with them becoming brittle after reflow- apparently due to moisture. We are also seeing bubbling on outside plastic.Peak oven temp 22
