Electronics Forum | Wed Aug 12 13:26:31 EDT 2015 | tombstonesmt
Esoderberg, Thank you for the response! I was completely unaware that HumiSeal provided latex masking. I have a sample on the way. I sampled some Wondermask 2211 in the past. By the TDS description, I wonder if they share the same makeup; both
Electronics Forum | Wed Jul 22 06:58:50 EDT 2015 | migliore
Hi, I got the answer from edaboard.com A standard 6-layer stack is using 2 cores. Manufacturing steps for standard 6-layer are: 1. Etch both (double side) core substrates 2. Assemble, press and cure the complete stack: - copper foil - prepr
Electronics Forum | Fri Aug 14 07:52:03 EDT 2015 | mun4o
Hi all, 2 weeks ago we installing a new P&P machine - chip shooter.But , after installation proved that vibration of the new P&P arе very strong.If I use mashine to 100% of the speed the machine vibrating and after 2-3 panels moving 3-5 mm.The machin
Electronics Forum | Tue Oct 27 03:22:43 EDT 2015 | pvogel
I'm looking for some SMD shims or something to solve this problem. We have a coin cell on a PCB and the side that contacts the PCB also has traces under the cell that don't connect to the cell. So I'm after some small dots of something suitable for
Electronics Forum | Thu Jul 07 07:09:16 EDT 2016 | soldertools
BEST is an IPC Master Certification Solder Training Center offering Instructor and Operator courses for IPC-A-610, IPC J-STD-001, IPC/WHMA-620, IPC-A-600, IPC-6012 and IPC 7711/7721. BEST is also known world widely for PCB repair kits and materials t
Electronics Forum | Mon Sep 19 09:16:24 EDT 2016 | markhoch
Hi Shriram, Are you saying that there is a trace running between the pads for this 0603 capacitor? If so, this design may be causing a gasketing issue between the stencil and the PCB. The uneven height prevents the stencil from sitting flat on the PC
Electronics Forum | Tue Jun 06 11:47:33 EDT 2017 | stevezeva
Hi Zac, was that board finished with tin/lead HASL or leadfree/HASL? Also what type of flux were you using? Just because a board is fresh out of sealed packaging doesn't necessarily mean that it's going to solder well. The picture that I've attached
Electronics Forum | Thu Aug 17 12:18:40 EDT 2017 | cyber_wolf
I do not see anything obvious that would cause a thermal mis match. Regarding reflow profiles reducing tombstoning, Unless there is something wrong with your paste or you are running smaller than 0402's, I have NEVER seen a reflow profile reduce tom
Electronics Forum | Tue Dec 05 04:30:02 EST 2017 | jan_pedersen
You find good information in IPC-4554 that includes recommended total Sn thickness and recommended free Sn. It refers to how much usable Sn is needed to meet coating durability categories defined in J-STD-003. As example, if you need 6 months shelf l
Electronics Forum | Wed Dec 13 02:58:03 EST 2017 | robl
You could use a bowl and track vib feeder to present them, but picking them up and pushing them far enough into the PCB is going to be tricky as they look almost flush mount. Also you need to consider the reliability of the post plated hole diameter
