Electronics Forum | Fri Nov 09 11:22:43 EST 2001 | denis
We are a contract manufacturer and we do business with a big company. There is a mistake in the design of the PCBs they are supplying: the pads are too long (under the component) and sometimes we get short circuit we cannot see. Changing the design w
Electronics Forum | Mon Nov 12 17:32:10 EST 2001 | slthomas
How do you guys store loose components for repair? Currently we just have bins with little labeled paper envelopes filed numerically with loose components in them. When an envelope goes empty, the repair person locates a reel of the same parts and
Electronics Forum | Mon Nov 26 20:15:50 EST 2001 | davef
Sounds like you are thinking correctly. I'd guess your fab has gotten "smart" and changed your bare board, as you suggest. So, you've got two choices: 1 Rework the QFP. 2 Remove the lower temperature PTH components and solder them to the board some
Electronics Forum | Thu Nov 22 10:02:42 EST 2001 | Adam
Guys Has anybody had experiences with plastic glue stencils good or bad ? I also have a couple of questions : 1. Can I use the same aperture design rules for plastic stencils as I do on my metal glue stencils ? 2. How repeatable is a plastic glue st
Electronics Forum | Mon Dec 03 20:12:41 EST 2001 | Kelvin Kok
Hi Peterson, We are in the business of manufacturing wave, SMT pallets and all kinds of toolings. With our 11 years expertise, we definitely able to meet your requirements with quality products. With our location in Silicon valley and supporting ma
Electronics Forum | Tue Dec 04 12:49:49 EST 2001 | bcaler
We use a Hach digital titrator. You can buy a digital titrator kit, hydrochloric acid, phenolphthalein indicator powder pillows, turkey baseter (or some bulbus sucking device) and a couple small measuring cups. We do tests twice per shift (more is
Electronics Forum | Mon Dec 17 11:20:12 EST 2001 | slthomas
Well, I was able to convince them we had a serious problem on the poorly reflowed boards without spending 2k on off- site analysis. Now all we have to do is sort out the ones that flowed well but had solder balls (looks like a damaged stencil prob
Electronics Forum | Wed Jan 02 17:18:01 EST 2002 | Carol Stirling
Hello All, Hope you had great holidays and are all rested up for 2002! I would like some feedback on various optical inspection equipment for PBGA that different companies have used - the drawbacks to look out for, certain features that can be reco
Electronics Forum | Wed Jan 16 15:23:11 EST 2002 | dougt
You sound like your set to go with MyData. If you still have some time look at what Contact Systems has. Their older machines were slower compared to what is out there but they are awesome prototype machines (write a quick program, run a couple of
Electronics Forum | Wed Jan 16 15:13:24 EST 2002 | dougt
The Industry has just come out with some standard that includes a "test board" that will be used to compare one machine to another (we have been refering to it as an IPC board). The board has components spaced from a smaller to larger pattern and at
