Electronics Forum | Mon Mar 23 16:28:14 EDT 2015 | aqueous
Dendritic growth is always a result of three combined factors: Conductive/corrosive residues Electrical current Moisture A wave solder process normally applies a higher volume of flux than a printed process. Flux however is not the only source. F
Electronics Forum | Thu Jan 18 17:26:30 EST 2018 | davef
I'm aware of no electrical test for detecting voids and air bubbles. If someone was x-raying my boards and saw voids and air bubbles and they weren't happy about it, first thing I'd do is convince them that the boards a within standard. You know some
Electronics Forum | Fri May 11 09:17:12 EDT 2018 | charliedci
I have used a 2006 Electrovert Vectra ES (63/37) for last 3 years, we acquired it used. It had little or no maintenance before we got it, now after replacing a solder pump motor, preheater fans and thermocouples it is pretty reliable. The spray fluxe
Electronics Forum | Wed Oct 24 06:32:18 EDT 2018 | marinaluo96
PCB, PCBA and Materials Procurement services. Our company has won AUDITED SUPPLIER by SGS, ISO9001:2008 and IATF16949:2016 certified, IPC member. 35 assembly lines for bulk order and small volume, 500 staff, 13000㎡, dust-free and static-free works
Electronics Forum | Fri Apr 03 08:34:54 EDT 2020 | SMTA-Gregory
We need to be careful with product to avoid introducing a new failure mode, namely corrosion and dendrite growth, especially those running no clean processes! In addition to heat (reflow, wave and some selective soldering processes) killing the vi
Electronics Forum | Sat Sep 23 15:13:40 EDT 2000 | Francois Racine
Hi Sophia, I`m responsible of SMT line and we solved this problem with a complete automatic solder paste printer machine. In the past we had problem with off alignment and solder height too.... at that time we used a semi-auto printer machine and w
Electronics Forum | Fri Mar 01 08:35:27 EST 2002 | caldon
I am on board with Dave F.(like I usually am). I can not imagine what IPC specs the auditor is speaking about. The Stencil Design criteria, 610, and 001 do not fit the type of solder deposition you speak of (nor I think they should). The machine para
Electronics Forum | Thu Aug 31 18:48:25 EDT 2023 | SMTA-64387600
I presume you have a local flux spray with your selective solder machine (I have no idea what you use). If I have a group of leads in close proximity like this, I would be trying to design a well and nozzle setup that I can use to solder all the joi
Electronics Forum | Wed Oct 06 04:23:09 EDT 1999 | Brian
| | I am a new employee at a company that has had a large turnover of employees over the past year. I am working on a board (components on one side only), the engineer (he is also new ) wants to use an .035 pad with a .021 dia. hole, there are no via
Electronics Forum | Tue Oct 06 17:17:44 EDT 1998 | Chrys
| We are experiencing poor wetting on various components placed on a PCB with En-Tek coating. Is anyone else experiencing simular problems ? We have the following questions: | | 1. How can the thickness of the En-tek coating be measured? | 2. Is En
