Electronics Forum: index (Page 4151 of 7890)

speedline sale

Electronics Forum | Sun Nov 09 01:58:09 EST 2003 | fastek

Oh Primus I didn't mean it literally! And it doesn't upset me at all. Amazed perhaps but upset....no. The bottom line is either the market is far worse than suspected or Cookson simply had no idea how to run and manage perhaps the best collection o

speedline sale

Electronics Forum | Fri Nov 14 08:28:22 EST 2003 | caldon

Actually cleaning of PCB's may see a resurgence with the lead free movement. Higher temps and more aggresive fluxes might need to be clean depending on your board and process. In addition Wave soldering solder pots (in some cases machines) may have t

BGA APATURE

Electronics Forum | Wed Nov 05 13:43:52 EST 2003 | swagner

I just did a bga job with square aperture's, the reasoning is for enhanced print release and additional paste volume. Be careful of the edge to edge clearance between the stencil openings, I don't recommend going below a 8 mil clearance, you could b

BGA APATURE

Electronics Forum | Wed Nov 05 17:36:12 EST 2003 | Stephen

Make sure that the side of the square is the diameter of the pad, That is that the circle is inside the square not that the square is inside the circle. normally the aperatures are smaller than the pad to get gasketing. In this case the idea is to

Wastewater Issues with Saponifiers

Electronics Forum | Wed Nov 05 19:57:35 EST 2003 | Hoss

9.0. In it's spent form (from a batch cleaner) the cleaning solution is at a pH of 10.1. Luckily, we are setup with a holding tank and have an oppurtunity to treat the stuff before sending to drain. My question is, what is the easiest way to adjus

Is there some general file format for chip placement on pcb

Electronics Forum | Mon Nov 17 08:01:44 EST 2003 | stefwitt

The format is X,Y Theta of the component center for all placement machines. Gerber data can be useless, unless you have the reference from pin 1 to the component center. Some machines offer a CAD convertion tool. I don't know any machine, which can

Shelf life of electro-plated tin-lead on stainless steel

Electronics Forum | Fri Nov 07 15:57:56 EST 2003 | Marc Simmel

Are there specifications or recommendations for electro-deposited tin-lead plating thickness on austenitic stainless steel that would provide a shelf life of 1 year? 6 months? Would 2 to 3 microns (78 to 118 micro-inches) 90/10 tin-lead over 1.27 mi

Becafeful

Electronics Forum | Mon Nov 10 11:35:09 EST 2003 | simon66

Hello every member in the net. There is a con-man in this trading. Pls becareful. The one who read this know who you. YOu will not be able to locate him at all and ony he can locate you. I am not revealing their name now by giving them a chance to ex

LED (Ligth Emitting Diode) auto insertion equipment

Electronics Forum | Tue Nov 11 08:08:43 EST 2003 | Chris

Use a Radial lead inserter. you will need 1 head for each different part number you have. the machine cannsert 2.5 $ 5.o mm lead components and 7.5 with special to0ling. For LED you want to use a Radial with the new dual spocket CTA (Component transf

SM termination with Nickel barrier with 100% tin plated finish

Electronics Forum | Tue Nov 11 12:49:13 EST 2003 | Carol

Could you direct me to a Standard or Study that has used this termination with 67/37 tin/lead solder please? I am looking for the recommended reflow temperature requirements and reliability issues for the completed product. We are receiving this type


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