Electronics Forum: spi defect (Page 1 of 3)

SPI

Electronics Forum | Thu Apr 28 01:40:14 EDT 2022 | sophyluo1985

Advantages of SPI 1. Reduce defects SPI was first used to reduce defects caused by improperly printed solder paste. Therefore, the primary advantage of SPI is its ability to reduce defects. Defects have always been a major problem when it comes to

IPC/JEDEC standard for solder paste printing defects

Electronics Forum | Wed Mar 23 05:17:23 EDT 2011 | arwankhoiruddin

Hi All. I want to know what is the IPC/JEDEC standard for solder paste printing defects. From the brochures of SPI Machines, the recognized defects are excessive, insufficient, misalignment, no solder, bridging, and solder shape error. What document

When to implement SPI in your SMT line

Electronics Forum | Tue Mar 30 12:18:22 EDT 2021 | chicagoindustrial

Sorry for such a generic response, but you should consider SPI if you are not happy with the results of your printer. That is probably measured by defects at the AOI. SPI machines are quite expensive. I don't see the point of them when you can just b

Stencil life

Electronics Forum | Thu Jun 07 01:22:41 EDT 2018 | buckcho

Hello, the colleagues are all right. What I did in addition to show customers and quality that we either need or dont need a stencil: 1. Made a procedure - in there i defined 50 000 cycles and then the stencil has to be checked by me. In the checks

Stencil deformation patterns

Electronics Forum | Thu May 31 06:25:23 EDT 2018 | cyber_wolf

Diego, In my opinion you are wasting your time testing. Set the squeegee pressure until its just cleaning the stencil off. That is the correct pressure. Unless you are getting failures at SPI (if you have SPI) or getting solder defects don't worr

SPI

Electronics Forum | Fri Apr 29 23:57:24 EDT 2022 | auriga2001

I ran a SMT production line with and without SPI. I was also charged with gathering the time and defect metrics when we got our new SPI machine, comparing before and after implementation. It saved time on the printer because it didn't have to handle

AOI for solder inspection

Electronics Forum | Sun Nov 08 08:58:55 EST 2009 | aliabdul77

Instead of you spend money on AOI,my recomendation will be to install SPI machine ( solder paste inspection machine)since most of your defect are solderability issues.AOI only will ensure no escapee to backend/human escapee but SPI will help to to en

AOI for solder inspection

Electronics Forum | Sun Nov 08 09:00:49 EST 2009 | aliabdul77

Instead of you spend money on AOI,my recomendation will be to install SPI machine ( solder paste inspection machine)since most of your defect are solderability issues.AOI only will ensure no escapee to backend/human escapee but SPI will help to to en

SPI: Cyber Optics SE300, review image missing

Electronics Forum | Tue May 10 09:54:35 EDT 2016 | reinhardk

Hi all, kindly asking for some hint with a problem we encounter with our SPI: After inspection, the SPI should show the defect details, but it doesn't. I can see the files created by the realtime-card in the exchange-directory between windows- and

solder paste height standard

Electronics Forum | Wed Jan 08 08:20:52 EST 2014 | emeto

To most of our boards I give 20-30% tolerance in both directions. From experience if you have big aperture on your stencil, the squeegee will scoop certain amount of paste from this aperture and you will see lower height. Depending on your board supp

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