Colorless LEDs - Mix up

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We observed a manufacturing problem due to innovation in... - Sep 11, 2003 by

Why/how are they getting mixed up? You should figure that on... - Sep 11, 2003 by RDR

You can use a meter in "diode mode" to illuminate an LED to ... - Sep 22, 2003 by Dilbert

Please check the leads length and polarity. The manf. of LED... - Oct 03, 2003 by Kanwaljit Singh

Ashok Dhawan

#25706

Colorless LEDs - Mix up | 11 September, 2003

We observed a manufacturing problem due to innovation in LED technology. The most new LED products are colorless and lights up in different colors only when powered. This is great feature , however, it has created new problem for manufacturers who are assembling PCBAs. We have had a number of incidents where we got LEDs of different specs mixed up and found the problem only when units were already built and tested. That was too late to know.

We like to know if someone has come up a solution or remedy for this problem.This can be solved by : color coding of housing, color dots or any other engraving or marking on housing ? Anyone who already know about it and advise ?

Best Regards

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RDR

#25709

Colorless LEDs - Mix up | 11 September, 2003

Why/how are they getting mixed up? You should figure that one out and fix it. As far as some type of coding, I believe that the supplier of the part would have to do that in there manufacturing process. You can "light them up" with an appropriate power supply and them mark them if you want.

Russ

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Dilbert

#25790

Colorless LEDs - Mix up | 22 September, 2003

You can use a meter in "diode mode" to illuminate an LED to check a batch. Hopefully your stock room doesn't open the container and poor them all into a bucket to be issued out to the floor.

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Kanwaljit Singh

#25931

Colorless LEDs - Mix up | 3 October, 2003

Please check the leads length and polarity. The manf. of LEDs must have given some feature for distinguishing.

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