Electronics Forum | Thu Oct 19 12:34:36 EDT 2000 | lwatson
I can't seem to find an article about the limiting mass of a SMT component on the solderside of a double-sided reflowed PCB. I'm pretty sure that Phil Zarrow did an article on this subject. It went something like the mass/land surface area?
Electronics Forum | Mon Oct 23 21:05:37 EDT 2000 | cklau
If you're looking for PWB cleanliness , please consider one surface treatment other than HAL (i.e HRF-heat resist flux). HRF is a very inexpensive and effective process that your board manufacturer can provide you to meet your requirement. For gold
Electronics Forum | Tue Oct 17 01:12:50 EDT 2000 | Darby
Try "Amicon D125 F". Good for both dispensing and screen printing. I like the yellow colour, it shows up better on green pcbs. Most smd adhesives are single part, heat cured epoxies, UV curing having gone out of fashion some years ago. Amicon used to
Electronics Forum | Tue Sep 26 20:50:06 EDT 2000 | Dave F
Right!!!! We have built product with via holes only 0.010" off the edge of the routed edge or even routed them in half, which usually adds cost and shorts to the chassis. Most high speed routing has a tolerance of +- 0.005". It's common for UL fi
Electronics Forum | Thu Sep 21 17:50:43 EDT 2000 | Bill Boles
Does anyone have a quick reminder for a PCB with immersion gold surface finnish going through a reflow profile: Which of the following statements is more correct? A: In order to minimize gold in the intermetallics of the solder joint, the board temp
Electronics Forum | Mon Aug 28 15:59:43 EDT 2000 | Tom Humphrey
Can any one give me a list or recommendations of board assembler / manufacturers (Southeast U.S. prefered) who could handle assembly of 2 inch x2 inch PWB with 100+ surface mount components. No testing required. I would appreciate any help or recomen
Electronics Forum | Mon Jul 24 11:10:38 EDT 2000 | Sal
we have just started manufacturing a board which has surface mount components on side 1 and on side 2 all the thro hole components are d type connectors, (loads of them) the chances of these connectors inserted with the wrong orientation is very, ver
Electronics Forum | Thu Jul 06 10:21:25 EDT 2000 | Mike Firmstone
I need to get an idea of the value of assembled surface mount boards shipped in various sectors such as consumer electronics, mobile phones, computers, automotive electronics etc. Another way would be the output from contract assemblers eg Solectron
Electronics Forum | Wed May 17 10:11:12 EDT 2000 | Boca
Sounds 'on the money'. By gear up, I assume you use respirators. Wipe up any dust deposited on surfaces and dispose of the wipes as lead waste. Keep the cover firmly on the dross can when not in use. You've got it covered (pardon the pun). Do yo
Electronics Forum | Tue Mar 14 05:02:35 EST 2000 | emmanuel
I am to implement PBGA, and i am looking for PCB surface finish informations. A lot of technical reports are specifing NiAu finishing because of flatness property. Because of leads shape, I though that BGA doesn't need flat pads like QFP. Is it false
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