Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey
Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w
Electronics Forum | Wed Mar 02 11:57:10 EST 2005 | Rob
Hi Dave, Thanks for the info, it will be helpful. Planning on trying it on a number of finishes, and have arranged for some samples of the adhesive - Loctite 3880 to start with. Have discovered something important already though - why not many peo
Electronics Forum | Tue Mar 01 09:20:42 EST 2005 | rlackey
I remember Metro Nozzles mentioning that they are bringing out a new "blade" nozzle soon to allow closer density placement of 0402's & 0603's than the 08MPF allows. Also noticed that you get far better placement with a 1 mil camera than a 4 mil, coz
Electronics Forum | Tue Mar 01 10:27:24 EST 2005 | Rob
Hi Alex, I've seen 2 types of feeder test rigs for sale that cover CP6 feeders, one from Alternative - http://www.alternativesmt.co.uk and one called a GAM20 - I think it was ABtech Europe - http://www.abtech-europe.com. The GAM20 was about half th
Electronics Forum | Wed Mar 02 05:01:41 EST 2005 | ABHI
Are your packages mounted on boar using sockets or BGA balls? LGA's are usually no issue and are simple compared to BGA. No issue on missing balls or ball drop issues. However, LGA's need quite a bit of mounting / holding pressures during test and mo
Electronics Forum | Thu Mar 10 12:11:30 EST 2005 | Rob
Hi P-Y, Nitrogen = 15 euros per hour. Solder replenishement = 1kg per hour at 11.5 euros per hour. Obviously there is also the labour involved in scraping off the dross. Cheers, Rob. NB. For all our US friends a Euro is a strange Belgian inventi
Electronics Forum | Thu Mar 10 19:28:22 EST 2005 | KEN
Euro's....Euro's....ah yes here it is. RoHS, Article 4....shall not contain: Hex Chromium, lead, mercury and Euro's. I heard our sales guys telling a customer tour the other day that we were No Clean, VOC free, lead free and Euro free compliant!
Electronics Forum | Tue Mar 01 10:21:55 EST 2005 | davef
IPC Plating Committee is presently working on a specification for immersion tin [IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards] as a solderable surface finish. Immersion tin is normally deposited at 30 to 60 microinches.
Electronics Forum | Tue Mar 01 10:55:07 EST 2005 | spot
A lot depends on the complexity of the board/process as well as the amount of placements. If the board has few placements and the parts are not smaller that 0805 then doing all the rework after completion is ok. The human eye can only pick out obvi
Electronics Forum | Tue Mar 01 13:51:23 EST 2005 | pjc
pr is 100% correct, can't have visual inspectors touching up for the reason he states. I have always seen that- when in doubt they will always "touch up". Touching up is always a bad thing. Looks like you have some problems that need fixing to elimin
