Electronics Forum: screen and print (Page 31 of 117)

Re: Solder cream kits (flux and powder separately)

Electronics Forum | Fri Mar 03 09:48:06 EST 2000 | Wolfgang Busko

I have heard about it. The main reason is to save money. The problem is, or better is said, that the mixing isn�t that simple for you got have a homogen paste afterwards and the solderballs shouldn�t be deformed in size so that problems during printi

Re: Conductive Adhesives and Underfill used on flex ckt

Electronics Forum | Tue Jan 12 15:02:12 EST 1999 | Earl Moon

| I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chi

Re: Conductive Adhesives and Underfill used on flex ckt

Electronics Forum | Tue Jan 12 15:04:40 EST 1999 | Earl Moon

| I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chi

DPMO calc and Overall Manufacturing Index (OMI) calculations

Electronics Forum | Mon Aug 27 19:24:00 EDT 2001 | sharafali

It has been mentioned that DPMO offers large advantages over First Pass yield calculations for measuring process performance!!regarding the same I have a few queries: What are the benchmarks for using DPMO as measures of process performance? How is

"Gap" in completed solder joint between lead and pad

Electronics Forum | Thu Nov 30 15:19:56 EST 2006 | CK the Flip

Mike, dude, I feel your pain. Hearing stories like this makes my blood boil! It's almost as ridiculous as a customer who told me to put more solder paste on a MELF component to overcome noise issues - he used more solder paste as antennas to overco

Volume and average height of solder paste after printing machine

Electronics Forum | Thu Oct 02 01:47:57 EDT 2008 | myleb

I'm new to SMT. Now, i'm making program for SPI machine to inscpect for solder paste of SP60-MU. I think this is a very good printer but some times, my program shows only 50-60% of volume transfer; and the average height is very high: nearly 200 pct.

Volume and average height of solder paste after printing machine

Electronics Forum | Thu Oct 02 12:22:26 EDT 2008 | JerryS

Hello Ok there is not much info here. What you have to mae sure of is several key factors. 1. Have you entered the correct stencil thickness. 2. Are you using the stencil gerber (not the paste layer) The paste layer is usually not adjusted for ap

Possibility of a cheaper pick and place machine design?

Electronics Forum | Mon Jul 07 21:33:15 EDT 2014 | andrespena

The problem about covering it with glue (without using solder) is that the components might dislodge by a miniscule amount underneath the glue. So maybe the contact points will disconnect. I'm not sure if this will be a real problem, but if so it wo

RoHS and Non-RoHS products in same ICT Fixture

Electronics Forum | Mon Apr 03 02:09:58 EDT 2017 | soldertraining

Restriction of Hazardous Substances (RoHS) bans products that contain a high level of hazardous materials from entering the market like the EU market. If we talk about PCB products - The printed circuit board services – including both conventional an

Micro-Dispensing using a Essemtec Paraqudu and Vermes MDV-3200

Electronics Forum | Tue Jul 23 11:06:00 EDT 2019 | majelacquinn

Currently trying to get away from using stencil printing. Looking for information on Micro-Dispensing and dot size using a Vermes MDV-3200A micro jet dispenser. I am using a Indium led free solder that has size 6 balls. With a 100 micron dispense hea


screen and print searches for Companies, Equipment, Machines, Suppliers & Information