Electronics Forum: pass (Page 119 of 142)

How many times can a component go through reflow oven?

Electronics Forum | Tue Aug 18 17:49:16 EDT 2009 | dyoungquist

Is there a limit to how many times a pcb with components can be run through a reflow oven before the components start to degrade? Example: We load the SMT components on the bottom side of the pcb and run it through the reflow oven. Next we load the

AOI for solder inspection

Electronics Forum | Sun Nov 08 10:22:52 EST 2009 | doremi

Hi everybody, First of all, to have process under 100% control you should have AOI after every active process in the pcb assembly line : - Post printing (2D or 3D Solder paste inspection machine); - Post reflow; - Post selective(wave solder). It i

Temperature Profiling

Electronics Forum | Thu Dec 10 19:15:07 EST 2009 | swag

We like to keep one fully populated SMT golden per product (high volume) with t-couples soldered to it. We have best results using high temp. solder to attach t-couples (most permanent). 1) Remove all production solder from the part you are wanting

PCB Warp Issues

Electronics Forum | Fri Jul 16 17:39:33 EDT 2010 | deanm

It is a PCB design issue where the copper patterns are not balanced among the layers. Baking the boards in order to correct the warpage will not improve it. We've had a problem with one bare board in particular warping the same way from two differen

SpeedPrint reviews

Electronics Forum | Tue Aug 30 11:13:23 EDT 2011 | markaustin

Hello Bill A colleague here at ACW just told me about your question and as we have a few of these machines I feel that I'm in a position to answer you. Prior to 2007 we only used DEK265 (GS & GSX) machines and these we getting a bit old and passed

Need help for contact 3AV (2001 YOM )

Electronics Forum | Mon Dec 05 09:04:25 EST 2011 | haiae

I just buy a used Contact 3AV machine. Afer fixed some things I think the machine can be ready to run and in fact for first time the machine power up, pass all self testing, homing is done, moving of table, heads, actuator is good, pneumatic function

Quad 4c LAE

Electronics Forum | Wed Apr 11 00:40:19 EDT 2012 | ngineer

I have a problem setting up the LAE on my Quad 4c. I set it up for 0805, and it seems to work, although it rejects a lot of parts, at least it places "most" of them. I tried setting up on a soic14, and could not get even one to pass. I believe I h

Setting limits in Solder Paste Inspection

Electronics Forum | Sat Apr 21 04:39:45 EDT 2012 | brotakul

I am using different equipements for SPI such as Koh Young and Cyber Optics machines. I am looking for implementing a general procedure (SWP) for setting LSL's and USL's on the products on which the customer does not specify any limits on the solder

Capacitor marking

Electronics Forum | Fri Sep 07 16:10:07 EDT 2012 | ericrr

HO what a BIG twit I am, for wasting your time (and a few hours myself trying many options on google). It is not EG84 it must be E684, (I will have another look next time I go back to work) you see I know the value, I thought it was a new secret co

Groundhog day ~ vortex

Electronics Forum | Tue Jul 16 13:08:24 EDT 2013 | ericrr

I seem to of slipped into a mighty giant suction cup, and every day is the same. Now take yesterday as I was making a sample the start of run board, we have run many times. it got halfway placing diffused LED's 3216 (about 1207 size) then is stoppe


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