Electronics Forum | Fri Mar 31 03:55:37 EST 2000 | Chris May
I have a similar problem with a screen printer. It is 5 years old and has seen better days.But it still works, doesn't it ? Now that most companies are fronted by financial guys and not engineers who have worked their way up, it is harder to prove y
Electronics Forum | Thu Apr 06 10:10:43 EDT 2000 | Jon Wentz
Dreamsniper, Always remember your ace in the hole when it comes to equipment used in this industry; its complexity! CPK, PPK and various other cost studies are excellent ways to "communicate" to bean counters your situation with the particular mach
Electronics Forum | Wed Mar 29 17:10:25 EST 2000 | Jon Wentz
Hi Dave, What feeder model do you have? I took a quick look in my parts list manual and again, depending on your feeder model, you might be able to buy the needed part(s) from Zevatech/Juki. Have you checked with them yet? For example, the main feed
Electronics Forum | Mon Mar 27 20:52:22 EST 2000 | Dave F
Marc: In printed circuit board fabrication, fabricators place sheets of prepreg between each pair of glass cores. They stack these layers into books. As they heat and press the books, the sheet melts into an epoxy glue. The thickness of the prepr
Electronics Forum | Fri Mar 24 17:40:51 EST 2000 | John Thorup
Hello Chris As John says, a Dremel works well but be careful not to let it grab and get away from you or to let it cut too deep on a multi layer board. If you are using one of the traditional long and pointy Exacto blades I can understand the frust
Electronics Forum | Mon Mar 27 21:25:01 EST 2000 | Dave F
Pete: Two angles on your question: 1 Yes, the layout of your board can affect the level of bridging you see. 2 That aside, the set-up of your machine also can affect the level of bridging on your board. Shaw, I could set-up your machine to bridge i
Electronics Forum | Fri Mar 24 10:26:45 EST 2000 | Russ
Sal, Interesting problem, I have found that W.S. pastes tend to have a shorter tack time in real life than what is advertised. Usually the manufacturers specify tack time as after placement let the board sit and then turn it upside down and see if
Electronics Forum | Wed Mar 22 17:28:13 EST 2000 | Steve Harshbarger
Donnie, It's funny you ask this question. I just last month was at a company doing exactly what you are asking (Alpha 310 flux with infrared heating). They were successful, but they had 2 important things going for them. 1) A spray fluxer that wa
Electronics Forum | Wed Mar 29 04:14:49 EST 2000 | Marc
Charlie B: You mentioned that you have an air conditioned environment and a RH 0rf 50, baking the boards is predominately done when the history of the PCB delivery and / or previous storage conditions are un known. When I was with a CM, we did this a
Electronics Forum | Tue Mar 21 20:36:11 EST 2000 | Dave F
Armin: Boca makes some good points about release. So, let me spin this up from a different angle ... SM-782 suggests "full radius corners" as an alternative to the more familiar square corner pads on PLCC, TSOP and QFP. We see both also. We thin
