Electronics Forum: 272 (Page 1 of 2)

BGA underfilling

Electronics Forum | Thu Nov 15 13:46:28 EST 2001 | Terry Burnette

Underfilling PBGA's will increase the PCB level solder joint life by 4x-5x but we only recommend underfill for products going into extreme environments. Normally the 272ld and 388ld PBGA's solder joints when cycled at -40C to +125C should not see any

Re: market statistics on SMT Assembly ?

Electronics Forum | Fri Dec 08 14:03:52 EST 2000 | Roland

Andrea, There are many good sources for this info. One I suggest can be found at http://www.gii.co.jp/english/ab4031_yy_pcb.html. I hope this helps! Roland

Re: market statistics on SMT Assembly ?

Electronics Forum | Fri Dec 08 17:56:36 EST 2000 | Dave f

Check the fine SMTnet Archives. Some people have a difficult time using the fine Archives, if so, email me and I'll try to help further.

seeking better process

Electronics Forum | Wed Mar 21 16:28:37 EST 2001 | CAL

ED- We can help you. It is our specialty and we are right next door at the Philadelphia Airport. Please touch base with me. Cacdriscoll@aci-corp.org 610-362-1200 x 272 Cal Have I got a machine for you

Flex circuit assembly

Electronics Forum | Tue Jul 15 10:36:33 EDT 2003 | davef

Equipment, Sldr pallet * Garland Service Company (972)494-1911 fax 0972 http://www.goGSC.com * Datum Dynamics 207 Highpoint Avenue Portsmouth, RI 02871 401-683-5300 FAX 3995 http://www.datumdynamics.com * EES/Grip Technogies Weston CT 203/226

Crystalized Flux under BGA

Electronics Forum | Wed Aug 04 16:09:48 EDT 2004 | Dreamsniper

Hi, Thanks for your reply. I run 2 boards, using the same paste, thermal profile and the same method of aqueous cleaning, 1st is a Topline test board with topline BGA (BGA 272 with 1.27 Pitch) and the 2nd is our product PCB with our BGA from Motoro

market statistics on SMT Assembly ?

Electronics Forum | Fri Dec 08 12:38:51 EST 2000 | Andreas Foehrenbach

Hy all, i'm in need for some data about the electronics market: - general Industry Data of SMT and SMT Assembly - SMT-worlwide Production / Turnover - ratio of THT / SMT - Structure of productions cost (Parts, PCB-Assembly, Final Assembly, Investmen

BGA underfilling

Electronics Forum | Mon Nov 12 10:57:36 EST 2001 | emmanuel

We are to use a PBGA 272 and a PBGA 388. Between 500 and 750 thermal shocks (-45�C/+125�C), we have noticed that some cracks appear in the solder joints. According to our component specialists, these cracks are due to the whole design (pcb, component

Temporary Stencil for MPC555 PBGA

Electronics Forum | Mon May 27 18:16:28 EDT 2002 | Carol Stirling

Hi, I'm looking for Temporary Stencils to assist placement using a Sniper Rework Station. The PBGA is a MPC555 Motorola with 272 pins. The ball map shows 4 populated outer rows, then 16 balls in the centre of an open, unpopulated area. Could I g

AOI systems

Electronics Forum | Thu Mar 29 08:23:02 EST 2001 | CAL

Some AOI manufacturers require you to put in a GOLD PCB. Gold PCB is a perfectly manufactured board - Correct placements, correct polarity, no solder short, a "GOOD" PCB. With the vision limitations of some AOI equipment components that have variatio

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