Electronics Forum: through and hole (Page 93 of 167)

Conformal coating to avoid oil leak from circuit board

Electronics Forum | Sun Nov 10 15:36:06 EST 2013 | davef

Assuming your conformal coating material was selected with the intent of living a life in contact with oil, why doesn't your coating meet the IPC-A-610D requirement of that there be no voiding, no breaks in the surface, no loss of adhesion, etc? Furt

Water Washing

Electronics Forum | Mon Jan 04 21:32:40 EST 2010 | boardhouse

Conductive Anodonic Filament My worry is that any extra moisture added to the Lead free Material during assembly may cause this Conductive filament to grow within the material weave. They are water washing after through hole assembly and then after

Immersion Gold (ENIG)

Electronics Forum | Fri Sep 16 11:58:46 EDT 2005 | vinod

Friends, I have a PCB with Immersion GOld (ENIG) finish. Here are the detalis on the PCB. 1. 6 Layers 2. Immersion Gold (ENIG)Nickel 125-250 Micro inch. 3. FR4 Material 4. Thickness 0.062". I am having problem soldering the through hole components.

Immersion Gold (ENIG)

Electronics Forum | Fri Sep 16 13:19:59 EDT 2005 | vinod

Friends, I have a PCB with Immersion GOld (ENIG) finish. Here are the detalis on the PCB. 1. 6 Layers 2. Immersion Gold (ENIG)Nickel 125-250 Micro inch. 3. FR4 Material 4. Thickness 0.062". I am having problem soldering the through hole components.

SMT before through-hole

Electronics Forum | Tue Aug 14 10:01:32 EDT 2007 | gmoritz

I have posted earlier on a UIC Radial inserter machine. We have the machine running after repair of the CnC head. However, I now have a process problem with a board that has 256x3 LED parts (768 LEDs in three colors) where only 50% of the LEDs can b

solder skips in chip wave on a NU/ERA wave solder

Electronics Forum | Tue May 26 06:56:40 EDT 2009 | xinxi

Hi! From your post, it seem like the wave did not really touch the component. You probably need to get the both wave height correct and that it hits the component.It is normal for solder to come through the PCB when using chip wave. The through-hole

DIMM Connectors

Electronics Forum | Mon Jul 30 16:26:45 EDT 2012 | rdouglass

Just curious if anyone else has trouble with the installation and inspection of DIMM Connectors (I know - these are through-hole parts!) We have boards with 240 pin DIMM connectors and occasionally a pin may not be properly aligned prior to press-f

Selective Assembly

Electronics Forum | Mon Jun 10 13:31:29 EDT 2013 | emeto

Is there anything on the other side of the board? If not the process will be very standard. 1. SMT - place the small parts on your board. It is called surface mount technology. Basically one machine applies solder paste on the board, another machine

What's the best company for low volume, quick turn around PCB assembly?

Electronics Forum | Mon Nov 02 10:43:13 EST 2015 | dyoungquist

As for cost, that will depend on several things.... -Turn key or consignment? -Diversity of components? -Total quantity of components to be loaded? -Single or double sided SMT? -Individual boards or are they panelized? -No clean or water soluble flu

PCB Blistering / Delamination

Electronics Forum | Tue Jul 18 12:27:29 EDT 2006 | Nick

What are the root failures of PCB Blistering / Delamination? Could layers short together through vias or thru-holes?


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