Electronics Forum | Tue Mar 24 13:21:16 EST 1998 | Earl Moon
| Should I use thermals or direct connects on | vias from BGA pads to power planes. The via is | connected to the BGA pad via a short 8mil trace. Thermals are safest. However, I have had no problems using direct connects provided parameters are capab
Electronics Forum | Wed Jan 30 06:45:01 EST 2002 | yaq
Hi, Has anyone done some research (measurement/simulation) on the effect of PWB vias on solder ball temperature of the component? Would this have some effect on solder joint reliability especially during power cycling? Any comments will be appreciat
Electronics Forum | Thu Jan 31 04:48:04 EST 2002 | yaq
Hi, Has anyone done some research (measurement/simulation) on the effect of PWB vias on solder ball temperature of the component? Would this have some effect on solder joint reliability especially during power cycling? Any comments will be appreciat
Electronics Forum | Fri Jul 30 14:16:11 EDT 2004 | C.W
For VIA In PAD design, what's the difference between a thru vias and a blind via? thanks' chester
Electronics Forum | Fri Jul 30 14:21:36 EDT 2004 | C.W
what's the difference between a thru vias and a blind via?
Electronics Forum | Fri Jul 30 16:41:14 EDT 2004 | Dave
Consider a 6 layer board. The Through via gets drilled from top layer to bottom layer. All 6 layers has the hole drilled in it. A blind via is a via that does not got through the entire 6 layers. It would go from layer 1 to layer 2. or layer 6 to lay
Electronics Forum | Mon Aug 02 11:49:02 EDT 2004 | jbabson1
Blind vias are just that. They do not show on the surface sides of the pwb.
Electronics Forum | Sat Jul 31 17:27:50 EDT 2004 | C.W
thanks! So, why via in pad design is implemented? what's the advantages of it?
Electronics Forum | Mon Aug 02 13:46:10 EDT 2004 | Bob R.
Via in pad lets your layout guy run traces on inner layers so there's more more area available on the outer layers for placing parts, test point, etc. There are also electrical advantages due to shortening paths, but I'm just a simple mechanical eng
Electronics Forum | Fri Jul 30 16:12:12 EDT 2004 | davef
Search for "SMT Terms and Definitions" in the "Library & Bookstore" tab in the light blue area on the left of your screen.
