Electronics Forum: stencil and 2 and passes (Page 1 of 10)

Nub bying p&p, stencil printer and reflow.

Electronics Forum | Fri Apr 15 11:15:14 EDT 2011 | wrongway

Hello all lets see you are wanting to place 60,000 parts a day make sure you derate the machines you are looking at to about half of what they claim and your change over will take some time as well we do several change overs each day up to six tim

SMT BGA capable oven and stencil printer.

Electronics Forum | Tue Nov 20 17:07:20 EST 2007 | kennyrebbe

I am looking for a new semi automatic Stencil printer, and reflow oven that is capable of doing double sided boards with BGA�s. We currently own a Manncorp 4500R stencil printer https://www.manncorp.com/4x00_stencil_printers/index.php?view=overview&a

Nub bying p&p, stencil printer and reflow.

Electronics Forum | Fri Apr 15 13:25:40 EDT 2011 | tsvetan

agree, if you have fine pitch components the placement rate will be much less of what you see in the catalogues as they quote 0805 components placemen rate. I have one year log for one of our machine which is quoted to be 6400 cps and for one year a

RJ45 location pins and 2 sided assembly problem

Electronics Forum | Sun Oct 27 16:47:06 EDT 2024 | madisreivik

I got very few components on the first side and all these are not heat sensitive. On the other side I got 5 times more components, including electrolytic caps and micromodules, which love the lower temp of LMPA pasta and also, they would enjoy more i

RJ45 location pins and 2 sided assembly problem

Electronics Forum | Sat Oct 26 10:12:32 EDT 2024 | madisreivik

Hello ! Please offer some clever solution for the following problem 2 sided assembly. The side which must be assembled first has 2 SMD RJ45 connectors. They have plastic location pins. Which protrude tru the board, about 0.4mm So, when I want to a

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

Stencil cleanliness and inspection

Electronics Forum | Thu Jun 07 15:37:32 EDT 2001 | Claude_Couture

Kerryn, It's the first time I hear someone who needs an automated inspection machine to check the cleanliness of stencils. Why not improve on the cleaning method itself. I use ultrasonic batch cleaner. It takes 3 minutes to clean a stencil, 2 minutes

CCGA and overprinting?

Electronics Forum | Mon Oct 15 12:42:36 EDT 2001 | davef

I hate getting "roped" into math stuff, but here I go again ... Area of aperture = volume of paste / stencil thickness = {[5000 mil^3] / 5 mil} = 1000 mil^2 Side of the square aperture = Sqrt of the area = [1000 mil^2]^1/2 = 32 mil Diameter of ape

QFN's and LGA's

Electronics Forum | Wed May 20 17:56:51 EDT 2009 | dyoungquist

I have attached a pdf showing the dimensions for the QFN we placed. First, The pins on the part are not only on the bottom side but also wrap around to come up each of the 4 sides of the part as shown in the side view in the attached pdf. This i

AOI, Quality and SPC

Electronics Forum | Mon Mar 03 12:14:33 EST 2003 | testing

I am trying to optimise the use of our Automatic Optical Inspection Machines. As the data we collect from the machine is mainly of the attribute type (Pass/fail, Defect1, Defect2, etc), what advice can you provide to improve its use as well as using

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