Electronics Forum | Tue Sep 21 13:10:10 EDT 1999 | Dave F
| Dear All, | | In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. | | I mean that I wonder why we use
Electronics Forum | Mon Sep 20 10:17:19 EDT 1999 | Jeanjean
Hi all, As a student in elctronic sciences, I'd like to know why there is a difference in the voltage required for PC boards with surface mounted devices and the voltage needed by traditionnal components like leaded film capacitors? I wonder if it
Electronics Forum | Fri Sep 17 15:15:10 EDT 1999 | Dave F
snip | | So Ryan have we just gotten back from lunch with someone? | | Yes, and for a rookie, it was mildly confusing. I'm as of recent, a regular "reader" of the forum and thought it might be (and it is!!!) a good place to get other opinions. |
Electronics Forum | Wed Sep 15 06:14:16 EDT 1999 | Wayne S.
| I'm looking for some good articles on reflowing of double sided SMT boards. I'd like to come up with a process for low volume prototyping, but need to understand the do's and don'ts. | Hello, you can get some insight by typing in double sided boa
Electronics Forum | Mon Sep 13 11:23:41 EDT 1999 | Bing Feng
Hi, Recently encountered missing components problem at the SMT process. Among 13 chip components from the same part number mounted on the board, only 4 ( located in a same row and next to each other) were missing after post reflow. Checked the pick
Electronics Forum | Wed Aug 18 15:56:20 EDT 1999 | david dougherty
Hadco offers a technology of building in a "buried" capacitance layer (& other embedded passives) in organic PWBs (FR4 for example). see http://www.hadco.com/prod03.htm and a design manual is posted here: http://www.hadco.com/pdfs/bcguide.pdf I am c
Electronics Forum | Wed Aug 04 18:57:26 EDT 1999 | Dreamsniper
| What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes? | Hi Judy, In profiling you need an understanding of the reflow specs from the solder paste manufacturer then you nee
Electronics Forum | Tue Jul 27 09:28:34 EDT 1999 | Bill Bannister
We are currently using a 65/35 solder for our wave process but are considering switching to a 63/37 for a substantial cost savings. No one here seems to know why we everused a 65/35 formulation in the first place. I understand 63/37 to be pretty much
Electronics Forum | Wed Jul 28 20:31:42 EDT 1999 | Dave F
| We are currently using a 65/35 solder for our wave process but are considering switching to a 63/37 for a substantial cost savings. No one here seems to know why we everused a 65/35 formulation in the first place. | I understand 63/37 to be pretty
Electronics Forum | Tue Jul 06 14:33:26 EDT 1999 | Earl Moon
| We are looking for some subcontractors to do surface mount | technology boards for us. Is there anything I should pay specific | attention when I visit the subcontractor's site? | Thank you for any advice | Carol, Someone below mentioned con
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