Electronics Forum: after (Page 468 of 658)

SMT optimization and improvement

Electronics Forum | Wed May 31 22:17:24 EDT 2006 | EC

Hi Jack, I do not know what type of machine you are using and how old is your machine. But I have this problem before using Fuji machine. There are few things cause part throw.....placment speed, feeder, pick up tolerance, part dimension tolerance,

Stencil cleaning

Electronics Forum | Mon Jun 19 17:00:39 EDT 2006 | a_laser

The most common rates of in-process cleaning (under wipe) I have encountered are once per 5 to 10 prints. But this depends a on a lot of variables. More often is typically better, but more costly in under-wipe materials. (For some more info see http:

Problems with SN100C in a Soltec Delta C Wave

Electronics Forum | Tue Jun 13 04:20:21 EDT 2006 | Grant

Hi, ok, I have a bit more info after playing further with the profiling. We are getting close, but we don't have enough top side heat I think. The IR lamps just don't give enough, but we can get better connector that should help. But we have anoth

ROHS compliant marking Ink

Electronics Forum | Thu Jun 15 13:20:12 EDT 2006 | jem

Hello All Has anybody used or know of ROHS compliant marking Ink? In particular the permanent ink (bought in little container and used on the felt stamp pads)that QC inspectors use to stamp off a PCB after inspection. We use a trodat industrial ink

Oop's Pb BGA's in a RoHS process?

Electronics Forum | Thu Jun 22 13:53:43 EDT 2006 | grantp

Hi, Yes, I agree, and it seems like these studies were designed to show that lead free soldering was better than lead based soldering, and they threw in some results of lead components soldered in a lead free process, which seemed about the same rel

Help or nothing!?

Electronics Forum | Thu Jun 22 05:15:12 EDT 2006 | emeto

Hello all, I've read a lot of topics on the forum. 80% or more people don't get answers. All the time you can read massages like: "call the manifacturer" - what does that mean? I ask you. If I want to call to manifacturer I will do it. That is not

Flexi boards and uBGA

Electronics Forum | Thu Jul 06 13:36:37 EDT 2006 | SWAG

We've had much trouble with flex circuits. As previously mentioned, you must have local fids for the board or the BGA itself (if panelized). Other troubles we experience are drilled holes for pinned connectors. Unless the PCB manufactur has some w

RoHS Channel Stock

Electronics Forum | Thu Jun 29 21:52:13 EDT 2006 | grantp

Hi, Ok I am a little confused about an aspect of RoHS as I just heard some comments from a major manufacture that it's ok for a dealer of a product to ship a NON RoHS product to a customer after July, but you cannot distribute a NON RoHS product to

SIR Testing

Electronics Forum | Tue Jul 04 02:31:55 EDT 2006 | Mustang

Calling for an input from the Experts our there. Our customer is questioning the cleanliness of the no-clean product that we produced for them. We were asked to clean the board (localised cleaning) after rework (IC need to be changed due to an up re

SMT p&p new line

Electronics Forum | Wed Jul 19 11:18:04 EDT 2006 | fabione

Goodday,my name is Fabio and i'm smt tecnician manager of an italian company i must buy a NEW line smt. My end choose is: europlacer(Vitesse) or Mydata(My9+My9) or Siemens(CS+CF). if it's possible i would a yours considaretion about affidability and


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