0201 and "Juki"
Marek T.
We have made an assembling of some boards containing a lot of 0201 capacitors. I've afraid of the vacuum issue because difference between part on and off is very small, at my full range scale 0-600, it is 520 and 550. But it is not big problem, problem is "Juki" magnetizing and 0201 which are very light. During one pick I can pick 4 parts (if they are close each other), no need a vacuum for them :-). Discard not possible too, my nozzles are blowing but magnetism is stronger. Placement because if paste gluing - goes well if picking was good.
Question is how to demagnetize the nozzle, what the way do you use if any.
Or where can buy non-magnet 0201. I have many Chinese "great" nozzles and only some number of them are made of non-magnetic material - ie 502 taken from the same supplier are magnetic but not 503.
Marek T.
Grounded.
Mike Menci
Google - eBay Magnetizer Demagnetizer Tool
This will work for demagnetizing your nozzles.
I believe you have a magnet to hold your Juki nozzle in head. I tested this option a year or more ago and I had the same problem with metal parts sticking to nozzle needle.
You can reduce this problem to move magnet more inside head - So that the nozzle body will not touch the magnet but magnetic field will still pull or by replacing all needles in Juki with non magnetic ones...
I hope this helps!
Mike
Mike Menci
Marek T.
I've experimented with magnet also some year ago but abandoned it quick.
Tried to demagnetize the nozzle using electromagnetic field of transformer soldering iron but there is still remaining some small rest magnetism. It works but effective enough for 0402, remaining magnetism is too low to attract 0402 but still strong enough for 0201.
I was curious if others had the problem like that and what exact demagnetizer have used and found as effectively working. I guess that most of cheap Chinese demagnetizers are worth not much.
The link you have attached is for nozzles. But how to tell a magnetic from non-magnetic?
Mike Menci
Marek T.
I did it so and also expected like you say.
And it really gets much better but still not ideal. It's enough for 0402 but not 0201 yet.
While I have some 503 being magnetic passive completely.
John
