Electronics Forum: reverse polarity (Page 1 of 2)

Defect in diode(Reverse Polarity)

Electronics Forum | Fri Apr 07 05:10:29 EDT 2023 | abhishek10

Reverse Polarity Defect in diode.what could be the reason and how to avoid it. We have the issue facing in NPM and CM machines of panasonic.Any investigation would help.

Defect in diode(Reverse Polarity)

Electronics Forum | Fri Apr 07 11:47:58 EDT 2023 | abhishek10

part can be reversed internally in spool or may be possibilty of part drop

Defect in diode(Reverse Polarity)

Electronics Forum | Sat Apr 08 16:16:44 EDT 2023 | dilogic

How often does it happen?

Defect in diode(Reverse Polarity)

Electronics Forum | Mon Apr 10 03:07:23 EDT 2023 | abhishek10

once or twice a month

Defect in diode(Reverse Polarity)

Electronics Forum | Thu May 04 04:24:09 EDT 2023 | abhishek10

problem occured only in one part rest all parts are ok

Defect in diode(Reverse Polarity)

Electronics Forum | Wed Jun 07 18:02:49 EDT 2023 | linux

incoming material. bad feeder. set rotate before recognition

Defect in diode(Reverse Polarity)

Electronics Forum | Tue Jul 25 11:29:47 EDT 2023 | carl_p

Sounds like a feeder or pick issue.

Defect in diode(Reverse Polarity)

Electronics Forum | Wed Aug 02 04:17:21 EDT 2023 | ttheis

Possibly operator reloading rejected parts into tape/feeder in wrong orientation.

Defect in diode(Reverse Polarity)

Electronics Forum | Fri Apr 07 11:17:54 EDT 2023 | proceng1

Do you mean that your machine is placing the part backwards? Or the part is reversed internally? Like the Cathode mark is painted wrong?

Defect in diode(Reverse Polarity)

Electronics Forum | Wed Aug 02 03:07:43 EDT 2023 | cbeneat

We use NPM and CM machines. What we've seen is the part will stick to the top tape on occasion and get flipped, either upside down, or reverse. Adjust the tape/cover so the top tape is pulled while the part is still under the cover. This is usually t

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