Electronics Forum | Mon May 07 09:47:45 EDT 2001 | orbotech
An ultimate truth in AOI is that "you can not avoid what you can not see". At the post solder stage, 2D inspection is typically not enough as it simply "can not see" everything using a single perspective, and therefore, can not detect all of the faul
Electronics Forum | Mon Jan 31 11:28:51 EST 2011 | krisroberson
You stated that you are producing Class 3 boards so I assume you are familiar with the IPC standards.To answer your question directly, I'll refer you back to the J-STD-001. Clause 12.1 states "12.1 Rework Hardware defects shall [N1N2D3] be documented
Electronics Forum | Mon Jun 11 10:13:26 EDT 2007 | hussman
I would also "nice to have" because of your process. Inspecting solder paste from a 2D point of view manually would not assure you quality if the paste is 75% off pad. Plus hand placing onto solder paste causes it's own set of problems which will c
Electronics Forum | Tue Jul 30 12:15:15 EDT 2002 | Rick Lathrop
Hi Dave, The paste applied to the board ends up on the tombstone. The pad has a thin covering of solder most of the time, this is why I think they call it a dewet. Occasionally the pad shows some areas of gold and very rarely are some pads not wet at
Electronics Forum | Tue Apr 15 08:38:23 EDT 2003 | pjc
Don't have any specific links to papers and articles. Try searching on the IPC.org (plus APEX show http://www.goapex.org) and SMTA.org web sites. Any papers and articles on the process from equipment mfg.'s should be taken with a grain of salt. Sold
Electronics Forum | Mon Feb 12 12:33:24 EST 2007 | SJ
There are several ways to inspect solder paste after deposition. Defects will range - too much paste, not enough, misaligned, bridged, smeared, etc. Some sceen printers have 2D inspection imbedded, otherwise a standalone system for paste inspection
Electronics Forum | Sun Jun 10 23:25:30 EDT 2007 | slthomas
Could you justify a used printer with 2d inspection built in?
Electronics Forum | Sat Aug 03 08:00:24 EDT 2019 | makersan
Hello to everyone, we want to buy a screen printer machine. screen printer, what are the features to be considered? The smallest package we use is 0402, we also use QFN components. We want to get the features of 2D review and measuring the amount of
Electronics Forum | Wed Apr 11 16:02:21 EDT 2001 | stevearneson
Let me put my two cents into this argument..After being part of many extensive studies conducted to determine the benefits of solder paste inspection, there has never been a case where the customer concluded that paste inspection (Height or Volume)wa
Electronics Forum | Mon Oct 03 05:17:50 EDT 2016 | robl
2D SPI? Depending on the focusing height PTH inspection, or PTH solder joint inspection? Strip down if it has a granite slab in and turn into an engineering table for manufactured parts inspection? Stick a router head on it if you are really bored
