Electronics Forum: via and hole and open (Page 3 of 4)

ICT Question, Via holes and Probes

Electronics Forum | Fri Apr 27 10:38:30 EDT 2007 | pjc

No dome needed. You should check what type probe you have. You can look here and consult with them: http://www.qualmaxamerica.com/qualmax/leeno/semi.asp?string=ICT

Selective soldering pallets and solder balls

Electronics Forum | Mon Dec 02 16:19:11 EST 2002 | slthomas

Unfortunately it's nc or we'd be worrying about this on the fly. Non-contact is defintely and issue....this is an 18"x9" board with 1500 bottom side SMT parts that are scattered among the through-hole and vice-versa. We're currently using 7 hold-

Aperture Adjustments and Etch Compensation on Arrays

Electronics Forum | Thu Mar 28 15:53:49 EDT 2019 | SMTA-Jon

As a CM, we don’t have a lot of input on the PCB layouts we receive. Some engineers/software packages output the paste layer 1 to 1, some do an across the board reduction, and some set each part up individually with different reductions per footprin

Wave Soldering and Through Hole Forums

Electronics Forum | Thu Jan 24 09:53:56 EST 2002 | davef

You didn�t tell us about your solder, wave temperature profile, or the distribution of the problem. So, let�s assume the solder is near eutectic and the problem is wide spread. Wolfgang makes good points. So, let's talk a different tact. When we

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Sun Apr 25 12:05:50 EDT 1999 | Chrys Shea

| | | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free solderin

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Mon Apr 26 09:18:27 EDT 1999 | C.K.

| | | | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free so

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef

Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we

IPC Class 3 Annular Ring and Fine Pitch BGA Challenges

Electronics Forum | Fri Sep 08 21:49:24 EDT 2017 | sbar5781

Hello, I have a few PCB boards i am trying to be manufactured that are miniaturized medical devices. Thus they require IPC Class 3 Specs. However as miniature devices they have limited space, including a 0.4mm pitch BGA socket, which currently has

Re: Splicing tape for 8,12, and 16mm component tapes

Electronics Forum | Thu Jun 04 11:13:39 EDT 1998 | Justin Medernach

| Looking for vendors of splicing tape for 8,12 and 16mm tape and reel. | Any net sources? Mike, Give Siemens a call. They have a decent little system. It's comprised of thin metal fasteners that hold the carrier tape together via the holes, a crim

what's the difference between a thru vias and a blind via?

Electronics Forum | Fri Jul 30 16:41:14 EDT 2004 | Dave

Consider a 6 layer board. The Through via gets drilled from top layer to bottom layer. All 6 layers has the hole drilled in it. A blind via is a via that does not got through the entire 6 layers. It would go from layer 1 to layer 2. or layer 6 to lay


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