Electronics Forum: corners (Page 6 of 66)

BGA chip corner epoxy / adhesive?

Electronics Forum | Thu Dec 07 03:21:54 EST 2006 | Guest

Materials you see are corner bond adhesive, main purpose of this is mechanical shock absorber , it promotes additional adhession to lessen stress to solder joints incase device subjected to mechanical stress like dropping.By function, corner bond

Vitronics oven corner grounded delta?

Electronics Forum | Tue Nov 15 15:37:05 EST 2011 | comatose

I have a new (to me) Vitronics XPM3 oven which we're hooking up. It requires 480V, and I only have real 208V in the facility. I have a transformered up 480 subsystem, but its corner grounded rather than center grounded. The XPM3 manual suggests tha

3-Phase Corner-Grounded Delta & GSM

Electronics Forum | Tue Aug 04 14:28:39 EDT 2020 | ttheis

Yes, I am certain it is 240 corner grounded delta. It confuses many electricians and it took me some time to understand. It is fed from a 480:240 delta 200A transformer. As I mentioned, they have a lot of Bridgeport 3ph machines and cnc machines conn

Any Comments?

Electronics Forum | Tue Sep 29 17:14:15 EDT 1998 | Cunli Jia @ SMTnet

I am testing the new Admin Corner and inviting your comments on the new features of the Forum. Thanks in advance. Cunli

BGA Bowing on the corners.

Electronics Forum | Fri Aug 22 14:38:21 EDT 2003 | russ

Please search the archives, there is a ton of stuff on this. Russ

SMTnetters corner

Electronics Forum | Thu May 13 13:18:51 EDT 2004 | cyber_wolf

Is this feature still available on this website ? Is there still some way to look at an individuals postings ?

Had to share that one, its related to mfg. in the 21st century

Electronics Forum | Fri Jan 13 09:13:53 EST 2006 | Rob

......sorry, I'm off to the naughty corner.

Local Fiducials

Electronics Forum | Thu Oct 19 14:20:18 EDT 2006 | sliebl

Something that I find unusual in some of the replies is the fact that local fids that are randomly dropped around the quad don't do anything for assisting the alignment of said quad. The only way that I am aware of the local fids being useful is if t

Reflow Bottom BGA without pallet

Electronics Forum | Thu Oct 13 10:44:18 EDT 2011 | spitkis2

Have you considered adding adhesive / epoxy at the corners of the BGA to secure it in place?

I am looking for an IPC spec for intentional PCB warp

Electronics Forum | Mon Dec 22 13:54:25 EST 2014 | proceng1

My customer made a process change to overcome a design flaw. The PCB assembly mounts in a plastic housing. The PCB mounts to the front housing via plastic stand-offs. They had to change a connector on the back side of the assembly due to long term


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