Electronics Forum: qfn belt (Page 1 of 1)

QFNs in tubes. What is the best feeder to use for Juki?

Electronics Forum | Thu Jan 19 09:41:47 EST 2012 | charliedci

We have the same issues with QFN's on reels being cost prohibitive, so we also have to deal with tubes. We have had some luck with using a modified tube ran down (almost to the pick position) the channel of a belt feeder, assuming the QFN tube/channe

What is the QFN or Device Voiding Levels Needed for Automotive Industry for Power Devices for Electric Vehicles?

Electronics Forum | Wed Mar 15 10:21:08 EDT 2017 | pzappella

Hello Rob, I totally agree with you. Is this a real problem that is being shoved under the rug or just whatever voiding we get from a belt furnace is good enough. I think vacuum reflow can do much better but is a batch approach and not contin

QFN welding problem by reflux oven 10 zones

Electronics Forum | Wed Feb 12 14:38:18 EST 2020 | SMTA-Alex

There are several areas you can check. Your profile is very fast. You reach the peak at around 3 minute mark. That's not enough time for the fillet to form. Try to slow down your belt speed to around 90-95, to give it more time. Also, your temperatur


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