Electronics Forum | Fri Apr 23 15:10:45 EDT 1999 | Chrys Shea
| We are an assembly house engaged in large volume manufacturing of Computer motherboards and others. We are in the process of selection of a new wave soldering machine. Can somebody help me inform what are the different parameters which must be ens
Electronics Forum | Wed Apr 21 02:53:33 EDT 1999 | Raul N.
25 PPM)! | | | | 1. Is there a better process to solder the leads of QFP's with lifted "minute" lifted leads still having a realiable solder joints? | | | | 2. Or has anybody tried modifying solder pads and use thicker solder paste deposit to compe
Electronics Forum | Thu Apr 15 16:27:33 EDT 1999 | Nancy V
I had someone suggest that they weren't really necessary as long as your process is good. Is this just a way to help you keep an eye on your process? I was thinking, as we set up our line, our money would be more well spent with controlling the pro
Electronics Forum | Mon Apr 19 20:49:13 EDT 1999 | Dave F
| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185
Electronics Forum | Thu Apr 08 13:24:36 EDT 1999 | ADRIANO FERNANDES
| | I am getting ready to purchase a spray fluxing system for a no-clean process. I have narrowed it down to the Nordson or Dover system. Does anyone have any experience with either. If so can you relate with me. I am a little leary of the Nordso
Electronics Forum | Tue Mar 23 04:07:44 EST 1999 | Scott Davies
Rob, We are also using intrusive reflow to simultaneously process SMT and Thru-hole components. Our arrangement goes as follows: - Screen print solder paste to the single sided PCB using 0.008" laser cut stencil. - Apply adhesive dots to selected
Electronics Forum | Thu Mar 25 14:00:45 EST 1999 | Bob Willis
| Rob, | | We are also using intrusive reflow to simultaneously process SMT and Thru-hole components. Our arrangement goes as follows: | | - Screen print solder paste to the single sided PCB using 0.008" laser cut stencil. | - Apply adhesive dots
Electronics Forum | Fri Mar 19 19:13:57 EST 1999 | Earl Moon
| Hi Folks, | This is my first surface mount board, so I asked our assembly house for some tips. They said only passives on the bottom side-preferably no smaller than 0805, 0603 only if I have to. I would think that an SOT-23 would be OK on the botto
Electronics Forum | Sat Mar 20 14:48:47 EST 1999 | John
Thanks guys, since I have no control as to who makes the board (probably the lowest bidder), I guess I'll keep the SOT's on top. Thanks for your help, John | John, | | SOT 23's on the bottom side is no real problem...as long as you get the orientai
Electronics Forum | Tue Mar 23 10:16:22 EST 1999 | Chrys Shea
| Hi Folks, | This is my first surface mount board, so I asked our assembly house for some tips. They said only passives on the bottom side-preferably no smaller than 0805, 0603 only if I have to. I would think that an SOT-23 would be OK on the botto
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