Electronics Forum | Thu Apr 22 17:19:57 EDT 1999 | JohnW
| | We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have t
Electronics Forum | Mon Dec 17 15:41:15 EST 2007 | shrek
Ha-ha-ha-ha-ha,me lad. Wave solder is like an onion, it's got many many layers. Kind of like me-self. I'm a big ogre with many complex layers. At any rate i like the other colleague with his adverstising trigger finger. by golly, me chap, he's a
Electronics Forum | Wed Oct 25 10:38:49 EDT 2000 | JohnW
Adam, Ha yes the joy that is wave soldering, and don't we love customers that forget the simple little things like putting connectors in the right way! It's a common thing and one way to get round it is to angle the cards towards the wave, typicaly
Electronics Forum | Thu Oct 25 04:52:17 EDT 2001 | Vai
I'm running intrusive reflow. What happened was when the board went thru' the first reflow ( which is secondary side ), at Post reflow, I can see the solder joint quality is very good smooth and shiny. But when we proceed with the 2nd reflow, at Post
Electronics Forum | Sun May 23 10:14:14 EDT 1999 | M Cox
| Has anyone had any experience or data using vibration during the reflow process. | We introduced a vibration device attached to the fixed rail on a Vitronics reflow oven. The reason was to prevent skewing on large PLCC devices. The process worked v
Electronics Forum | Sun Jun 06 13:03:14 EDT 2010 | whitewing
I'm sure you could buy everything you need to make your own stencils in-house for way less than 200K - lasercut or photochemical etch. If you have someone local with a typesetter of photoplotter , photoetch should be really cheap to set up. I've also
Electronics Forum | Thu Jun 28 10:46:44 EDT 2001 | genny
Thank you. I'm sorry if I came across frustrated or anything, but I wasn't sure if people were ignoring the one question I kept asking or if, as you said, they just didn't know. Here's the deal. We are a small company rapidly growing into a larger
Electronics Forum | Thu Apr 22 08:43:25 EDT 1999 | Michael N.
| | I'm having problems with trying to get a good solder joint using a Ceramic PCB. We are using AMTECH hi-temp solder (ws-486 96.5/3.5ag). My profile looks great and I used the recommended profile from Amtech with a few adjustments. My max temp is a
Electronics Forum | Fri Nov 17 19:28:36 EST 2006 | rob@spinpcb.com
What kind of board finish do you have? You describe solder bubbles...and when you remove them, you find open vias. Are you, by chance, discovering flux contained in these bubbles? We've been experiencing the same thing with pb-free soldering on a
Electronics Forum | Fri Apr 21 14:58:04 EDT 2023 | rgduval
I mean...there are a ton of possibilities for bridging on selective solder before you ever get to alloy purity. Are the bridges happening consistently in the same spot? Are the leads too long? Can you modify the approach/exit/peel off to address? Wh
