Electronics Forum: reflow and review (Page 8 of 59)

Re: Longer soak time and reflow time impact Solder on Au pad?

Electronics Forum | Fri Sep 08 00:24:35 EDT 2000 | Jim Arnold

Sudden flux boil will cause splatter. More thorough drying or a slower intial ramp to allow drying to occur before a boil or "splatter" temperature is reached may aid your problem.

Pin in paste connectors and lead-free questions

Electronics Forum | Mon Jul 22 09:53:13 EDT 2019 | kylehunter

Hey all! As background, I recently purchased a full SMT line for my company. We have a DEK 265, an assembleon opal xii, and a Heller 1500. Currently our jobs are leaded, and the heller is working perfectly. An upcoming job that we are potentially g

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef

Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept

Material Ageing and Storage

Electronics Forum | Thu Feb 22 21:01:12 EST 2001 | davef

We don't do this, but if we had to and lacking better advice, for all components I�d dry pack according to J-STD-033, store in a low temperature and humidity controlled environment [maybe using some semicon fab inert storage cabinets], review the eff

COB and wire bond

Electronics Forum | Mon May 07 22:29:52 EDT 2001 | davef

4 wire per sec ... you figure how many you need] Encapsulation ~$120K for a dispenser [10 sec per die ... you figure how many you need] plus a cure oven ~$100k Throw in a another ~$100k for marking and cleaning Check the September 2000 SMTnet New

Re: Looking for input on Heller 1900WN reflow ovens

Electronics Forum | Wed Jan 05 17:56:26 EST 2000 | Dave F

Glenn: Greg's comments about Heller ovens are well taken. Heller sells more ovens than anyone. Beyond his and others general comments, you should be aware of concerns about buying used equipment. Suggestions are: 1 Check the temperatures of conc

Book Reviews and Technical Publications

Electronics Forum | Mon Oct 02 11:16:44 EDT 2000 | aflewelling

A new book on "hermeticity" by Hal Greenhouse has been offered by William Andrew/Noyes Publishing to us for review. This subject deals with sealing integrity in electronic packaging. Is this a book you would be interested in reading and reviewing f

small and good pick and place machine

Electronics Forum | Thu Sep 05 23:18:03 EDT 2013 | feiyangniao

There is a new toy I received today: a NeoDen TM-240A automatic desktop pick and place machine! I’ve kept my eyes on this baby for a quite a while, and finally decided to make a purchase last week. The shipping was very fast: DHL from China, a total

Circuit cam and mydata

Electronics Forum | Thu Apr 09 20:18:31 EDT 2020 | jlawson

Can not speak for CircuitCam is made by Aegis Software I veliveve sound like need to get understanding of how tool is supposed to work to extract-create centroid positions. Using Gerber Only is a pattern match and cacluate logic process - ie make pac

0201 and uBGA

Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb

On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t


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