Electronics Forum | Thu Jan 27 20:32:01 EST 2000 | Dave F
Kyungman: So, your boss is trying to get you to put a wet paste inspection machine on your line after the printer. Sounds like you have a bunch of toys and someone wants to give you more!!!! Ah, the burdens some people have to live with!!! ;-) J
Electronics Forum | Fri Jan 14 07:55:07 EST 2000 | Pat Pepper
Hi Wolfgang, Thanks for the response. We had a similar situation to yours with some white tin samples that sat around for about eight months. Samples soldered right after they arrived soldered better than the ones we soldered eight months down the
Electronics Forum | Sun Dec 19 23:27:22 EST 1999 | Mike
Should I manufacture my own boards or outsource them? Any opinions are welcome. I own a company and sell electronic products. Some products we sell have specific ad-on circuit boards which I have designed and had manufactured just for my company. The
Electronics Forum | Fri Dec 17 03:38:53 EST 1999 | cklau
Hello Guys; I "ll like to add some comment on Mr John message , see below.. "Be sure that the components to be used on the bottom can take the maximum heat of the wave and the delta T of entering the wave."-John The required preheat temp , that i
Electronics Forum | Mon Dec 13 21:11:53 EST 1999 | Curtis T.
Steve, I have done countless board profiling and oven reflow profiles. Here are the critical factors on you need to address. What is your board surface finish, if it is something like an OSP it will need a good amount of an active (aqueous) flux to
Electronics Forum | Tue Dec 07 16:34:54 EST 1999 | Russ
Wolfgang, I appreciate your continued feedback! The main reason that I shortened the Time Above Liquidous (TAL) was it appeared that I was burning off all of the flux from the paste. By shortening the TAL to 45 seconds and decreasing peak temp to
Electronics Forum | Mon Nov 22 11:16:04 EST 1999 | Boca
Chris, Some ramblings- Your choice depends on factors like which defects you're looking for, bugdet, quality inspection philosophy, high or low mix environment, sample sizes or 100%, and so on. Are you going to test 100% of the product coming off t
Electronics Forum | Sat Oct 09 09:50:04 EDT 1999 | Ken Fong
Hi, We are using mixed technology in our PCBA. Would like to know whether there is any criteria governing/guiding the use of mixed technology in such aspects as: 1. Some SMDs cannot be used in some kind of PCB materials such as FR1? 2. Some SMDs are
Electronics Forum | Thu Oct 07 16:57:02 EDT 1999 | Glenn Robertson
| | I have a board, 4 spacers needed to be soldered on the board | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there wi
Electronics Forum | Fri Oct 08 08:26:03 EDT 1999 | Carol Zhang
| | | I have a board, 4 spacers needed to be soldered on the board | | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, ther
