Electronics Forum: formula for cold soldering (Page 1 of 3)

Does anyone remember the takt time formula for the reflow oven

Electronics Forum | Fri Apr 11 03:28:11 EDT 2008 | joseph_gonzales16

Tak time is depend on the solder paste requirement all solder paste there are deferent tak time.

Warning not for pro RoHS people

Electronics Forum | Tue Sep 26 14:06:33 EDT 2006 | patrickbruneel

Jun 26, 2006 (See Comments Below) Editorial Managing the Naughty Child Mike Martel, Editor, Circuitnet I've been listening to voices on both sides of the RoHS issue and the more I hear, the more foreboding the tone becomes. Despite what some wr

temperature profile for ENIG

Electronics Forum | Fri Nov 25 05:16:44 EST 2016 | slavek

Hello, I want to ask on suitable temperature profile for PCBs with ENIG final surface finish. I know that it is complex question with many unknowns. When the PCB will be standard 1,5 mm 35/35 Cu and the amount of components will have any influence o

High-Temp solder for thermocouples

Electronics Forum | Thu Dec 17 10:04:28 EST 1998 | Chrys

Necessity is the mother of invention... The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. So I ran out to the local Radio Shack to see if the

Specification for Screw Torques

Electronics Forum | Tue Nov 06 18:39:08 EST 2001 | MikeF

Also, check the website for Assembly magazine, http://www.assemblymag.com, they have some good information on the basics of torque. Determining the "correct" torque value can become very complicated very quickly. The same size screws made from differ

How long does it tkae for Tin-Lead solder to rust if put outside

Electronics Forum | Thu Sep 27 15:16:34 EDT 2007 | novaman

Hi everybody, I did post in the past last year and I always got good answers. If I'm going to solder something with Tin-Lead solder and then put it outside (it will be exposed to water, sun, cold nights,...), how long does it take starting to rust?

Printing Speeds for Fine Pitch

Electronics Forum | Wed Sep 01 05:23:08 EDT 2010 | leeg

We are having solder bridges on a fine pitch QFP and was wondering whether printing speed directly affects the bridging and is there a typical formula to work out print speed?

Re: PPM for SMT Placement

Electronics Forum | Mon May 08 16:26:29 EDT 2000 | Travis Slaughter

A common formula and perhaps more telling would be 1 defect for each solder joint and each part. For example a 1206 resistor could be 3 defects, a QFP128 could be 129 defects.

Solder paste consideration for quotation

Electronics Forum | Wed Jul 10 13:45:30 EDT 2013 | pankajp

Hi, Generally how much is solder paste cost consideration in overall quotation. i could gather from the threads on this forum, that solder paste (or raw material) cost in SMT is almost negligible compared to other direct and indirect cost. Is my u

Re: High-Temp solder for thermocouples

Electronics Forum | Thu Dec 17 10:22:31 EST 1998 | Earl Moon

| Necessity is the mother of invention... | | The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. | | So I ran out to the local Radio Shack to

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