Electronics Forum: differs (Page 431 of 579)

solder ball

Electronics Forum | Thu Jan 02 10:31:48 EST 2020 | slthomas

It is strange that you're having issues while using the same process parameters (including stencil) that worked successfully before. It doesn't guarantee that it's not one of those parameters changing in a manner that's not apparent, but it does sugg

Samtec Searay 500 pin connector solder wicking issue after reflow

Electronics Forum | Mon Jan 13 17:39:49 EST 2020 | avillaro2020

Hi, I need help on how to address the solder wicking on the samtec searay connector after reflow resulting to open solder joints on thick and thermal heavy PCB (4.4mm and 6.3mm). I increased my solder paste thickness to 8 mils, the connector is manua

Reflow Profiling - Cooling Rate?

Electronics Forum | Tue Feb 04 09:21:48 EST 2020 | nhusa

There are two areas that are important when discussing cooling rate. One is the rate thru the liquidus, where a fast rate produces small grains in the metal and a slow rate results in larger grains. Although smaller grains are stronger normal SM

Paste drying on stencil

Electronics Forum | Sat Feb 08 04:37:19 EST 2020 | spoiltforchoice

I work with small batches and this is what I do. However I don't do it because of the paste. Instead I do it because I am the sole operator on the line and I want one process finished so I can keep a better eye on the others. I specifically work with

Connector is falling down in the second reflow

Electronics Forum | Tue Feb 11 10:51:20 EST 2020 | slthomas

To predict whether or not a first pass part is going to come off during the second pass you need to calculate the ratio of weight/soldered surface area. According to a couple of different sources that I've dug up, maximum is around 44 grams/in.^2. I

omit stencil apertures to hand solder or paste, reflow then solder.

Electronics Forum | Thu Feb 27 02:55:53 EST 2020 | hexton

I want to avoid peoples preferences as they will differ and will not be a deciding factor. A heat gun will introduce risk to surrounding PTH components and having to add protection for those, will limit any gain in productivity. There is no question

Solder pot & wire tinning help

Electronics Forum | Wed Mar 11 19:22:02 EDT 2020 | victorzubashev

Hi, 1. do not use flux-cored wire- the smell is bad and flux will evaporate anyway at the time of solder wire melting. 2. as suggested use solder bars, something like this: https://smtnet.com/company/index.cfm?fuseaction=view_company&company_id=39635

Siemens Siplace 80S15 causing Line Controller to hang up, and 80S15 keeps waiting for machine data from Line controller

Electronics Forum | Wed Mar 18 18:22:32 EDT 2020 | sportsradar

I have replaced both cards on the machine and the card in the PC. I have also replaced the cable. I can see where the machine is sending the request for data (by the screen shoots above). And I can see the PC is seeing something from the machine by

DEK265 alignment out of range

Electronics Forum | Fri Mar 20 02:10:03 EDT 2020 | weglimir

Hi Printer is DEK265GS if I remember correctly. It is definitely not a programing problem, I have 15 different screens which I've checked and all are working fine. It is also not a problem with Y shift, as I've compensated it with CUSTOM SCREEN o

Business/Manufacturing Operational Changes to Comply with Local/National COVID-19 Regulations

Electronics Forum | Wed Apr 08 18:46:52 EDT 2020 | spoiltforchoice

Things are a little different in the UK. Here the rules (currently) say work from home if you can. That basically means anywhere like a factory or warehouse can remain open providing they can offer a safe working environment. So measures such as ext


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