Electronics Forum: what (Page 846 of 1843)

CMMs (Coordinate Measuring Machines)

Electronics Forum | Thu May 09 08:12:15 EDT 2002 | ianchan

Hi mate, think "GSI Lumonics" a Canada based mafg of laser orientated product-machines may be able to help you. we saw their SVS8200/8300(machine model) theory based demo. looks good enough to warrant the time and resources to evaluate their machi

Moisture absorbtion in circuit boards

Electronics Forum | Mon May 27 18:25:03 EDT 2002 | Carol Stirling

Thanks for the information Reworkman, We are leaning to the theory of better safe than sorry. I think I'd supply the bags and dessicant just to eliminate manufacturing issues. What temps & times do you ask your boardhouse to bake to? Ours said some

Calculating PCB surface area

Electronics Forum | Tue May 14 11:52:04 EDT 2002 | Claude_Couture

Excuse me, but if I remember my physics lessons well, volume is what the water displacement measures, not mass. therefore, if you take the volume of water displaced by your populated PCB, divide it by the thickness of the PCB (which is easy to measur

changing from no-clean to clean

Electronics Forum | Fri May 17 08:12:37 EDT 2002 | danial

I'm trying to convince my customer to change to the clean process. They are asking me what is the benefit of going to clean process from no-clean. does anybody have any input or reference/article that I could refer to include in my report ? Apprecia

changing from no-clean to clean

Electronics Forum | Sat May 18 22:51:35 EDT 2002 | yngwie

First of all, my Customers can be described as a real "Jack-Ass" or at least the SQE does. They don't treat us as their partners OR more like "do what I said...When I started to use solder paste you probably weren't borned yet and/or probably still o

stencil design software

Electronics Forum | Fri May 17 11:36:37 EDT 2002 | Hussman69

Hmmm... Why would you want to to this? I understand your concern, but why not let your stencil house manipulate your Gerber and send you a copy of it before they cut a stencil? Saves you time and money. Sit down with your stencil manufacturer and

Feeder Protection Plates on Siplace S20

Electronics Forum | Wed May 22 09:59:52 EDT 2002 | stefwitt

I don't know how much Siemens charges for this option, but I guess we both know what a new head costs. Siemens did let go on more service techs. last weekend. They all can install this option for less than Siemens quoted. If you can't find a tech. in

Solderability of Resistor Network Arrays

Electronics Forum | Thu May 30 11:37:27 EDT 2002 | Ron Costa

Hi Ray, A couple of things to look into: 1.date code of reel 2. what is the termination made up of tin/lead or tin/lead/palladium. Check with part manufacturer. 3.paste volume/aperture openings 4.PCB plating 5.solder paste formulation Good luck R

Au Plating

Electronics Forum | Wed May 29 19:12:25 EDT 2002 | russ

If Gold gets to thick you will end up with brittle joints that break! Hard gold plating is usually about 50 microns thick (is that right?) whereas gold immersion is around 7-13 from what I have seen. i once use gold plating on an entire board and ha

gold connectors

Electronics Forum | Wed May 29 19:17:17 EDT 2002 | russ

We are starting to see a large increase in the use of through board gold plated connectors that require hand soldering with the limitation of .o6" encroachment up the pin. What is the best way to accomplish this? we currently scrap about 5-10% of t


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