Electronics Forum | Mon Sep 13 09:49:16 EDT 1999 | John Thorup
| | I noticed that some of our pcb's component legend/designation are unreadable as they are placed under smt pads. Is this correct and according to standard? Although we don't have any problems with them as of now, I would like to know the effects o
Electronics Forum | Fri Sep 06 15:22:53 EDT 2002 | barryg
Genny, we recently went through the same scenerio. First to consider is your budget. Second , what type of components (fine pitch, bga, chip components)that you would be placing. Also consider board size max. that you would be doing and would see you
Electronics Forum | Wed Jan 21 03:44:04 EST 1998 | Igmar
| We are currently investigating alternatives to HASL for circuit boards with 20 mil pitch smt pads and below. If you have experience with this product or simular immersion tin products with respect to manufacturing or assembly I am very interested
Electronics Forum | Tue Jul 24 19:26:20 EDT 2001 | johnmaetta
Thanks Dave. We develop high-speed telecom PCB assemblies that use uBGA and other fine pitch components. Our policy has been to use an NC process at our CM. Our engineering group, who is also a customer, and uses these assemblies for development,
Electronics Forum | Wed Jul 29 20:53:44 EDT 1998 | Dave F
| Howdy all- | Does anybody have any experience with solid solder deposits as an alternative | to paste deposits? I have heard many good things, but do board fabricators have | the technology to do this? Where can I get more information on ho
Electronics Forum | Fri Feb 19 09:20:01 EST 1999 | Stefan Witte
If the fiducials are rejected from the vision system, I would not relay on the accuracy of the position. Again, I would like to point out that the circle shape has a somewhat sinoid contrast in X- and Y- direction ( same as a diamond shape, but recta
Electronics Forum | Fri Jun 28 01:06:49 EDT 2002 | Dreamsniper
Hi Steve, We have a Heller 1088 (4 Zone Oven) and we are using Indium NC92 with 2% silver. My Oven setting is: Zone 1 Top & Btm 125 Zone 2 Top & Btm 145 Zone 3 Top & Btm 188 Zone 4 Top & Btm 265 Belt Speed 34 cm/min I have run a profile
Electronics Forum | Tue Nov 20 17:07:20 EST 2007 | kennyrebbe
I am looking for a new semi automatic Stencil printer, and reflow oven that is capable of doing double sided boards with BGA�s. We currently own a Manncorp 4500R stencil printer https://www.manncorp.com/4x00_stencil_printers/index.php?view=overview&a
Electronics Forum | Tue Nov 27 08:47:24 EST 2007 | ratsalad
The letter below was dated December 13, 2006 from Kester's Senior Market Development Engineer. I guess since then they have moved production back to Mexico. We no longer use EM907 as our primary Pb-free paste so I haven't seen any containers in a w
Electronics Forum | Tue Jun 08 12:49:41 EDT 1999 | Dave F
| Hi,my master | How to iron out such soldering bridge with below conditions: | 1.The component(Harness)lead pitch is 2.0mm,the lead length is 3.2mm. | 2.PCB width is 1.6mm.Pad size is 1.65mm.Its a single copper PCB | 3.using spraying fluxer and n