Electronics Forum | Wed Nov 15 06:44:54 EST 2000 | andy
John , I had some experience of selective solder in a high throughput environment and though the quality of s/s was good , the throughput was not . So if throughput is an issue , forget it . I would go with the hand-solder option , although as has be
Electronics Forum | Tue Nov 07 09:21:27 EST 2000 | jackofalltrades
We see this type of problem with a couple of our boards. It has proven to be a problem with the board. During manufacture at the board house the thru holes for the connectors are plated a little too heavy causing a smaller hole. If you haven't alread
Electronics Forum | Tue Nov 07 11:14:11 EST 2000 | Adam
There is a variation on the pins that come through on the other side. The pins that are deforming are roughly half the size of those which aren't deformed.There are no witness marks on the pins that are deformed, suggesting that the pins aren't fouli
Electronics Forum | Mon Nov 06 16:27:48 EST 2000 | Boca
Bingo! Sounds like you solved your mystery. You've checked your key process steps, the product has been running in your processes for some time with no process changes. This all points back to one of your process input, i.e. the fab. Experience s
Electronics Forum | Mon Nov 06 21:02:30 EST 2000 | Dave F
I love this!!! Two whizzettes with the same information and they spin-off in two different directions. Gad this is great!!! Delamination is a pretty broad topic, but that you have a problem with two suppliers makes me think the delamination is cau
Electronics Forum | Sat Nov 04 20:17:25 EST 2000 | Greg G
Hi Guys, I'm sorry to ask you this, but I got mixed infos from the archive. I want to define a process in wave soldering regarding bd-wave interaction. Now "What's the required dwell Time of a lead in the solder bath?" Some says 3-5 secs is good, som
Electronics Forum | Sat Nov 04 22:26:33 EST 2000 | Aoki Laboratories Ltd.
Greg, The operating parameters for Wave Soldering are: 1. Preheat Temp. (80-110 c, board surface); 2. 1.5-3 secs dwell time in solder. This, 1.5 second, is the time required for both the lead and solder to gain sufficient heat and as a result "tinn
Electronics Forum | Tue Nov 07 08:39:12 EST 2000 | Steve Geldard
Hi Guys, Ive seen your notes on Wave dwell times, we have been doing lots of test across many styles of wave machines. The most inportant thing to understand is that your dwell time does vary across the wave, it can vary as much as 2 to 5 secs from
Electronics Forum | Fri Nov 03 08:27:11 EST 2000 | CAL
1) You also may want to contact your OEM to see if there is interest in purchasing the equipment. You did not state the age or condition of your equipment but the OEM's are buying back machines and refurbishing them for resale. The long lead times OE
Electronics Forum | Fri Nov 03 17:36:37 EST 2000 | Thomas Ballhausen
Thank you for your hint. According to the substrate supplier the thickness is less than 1 micron. After Ni/Co layer there is water rinse, then "gold strike", another rinse then "gold plating". But still the total Au layer shall be less than 1 micron
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