When searching for the polarity for Cornell Dubilier Electronics (CDE)’s EDC Series Supercapacitors , you’ll find the polarity is not really all that clearly mention on the datasheet. You can refer to the following information:
As an example, for part number EDC224Z5R5V :
Cornell Dubilier Electronics (CDE) confirmed that there should be a marking for polarity.
On the other hand, on one side of the coin cell, the edge should be “beveled” and the coin cell is slightly lifted in the center.
The lead on this “beveled” side is the negative.
The positive side has a predominant corner and the cell is flat.
Applicable part numbers
338-EDC224Z5R5V-ND
338-EDC224Z5R5H-ND
338-EDC334Z5R5H-ND
338-EDC105Z5R5H-ND
338-EDC155Z5R5H-ND
338-EDC474Z5R5H-ND
338-EDC155Z5R5C-ND
338-EDC474Z5R5C-ND
338-EDC105Z6R3C-ND
338-EDC473Z5R5H-ND
338-EDC473Z5R5C-ND
338-EDC104Z5R5H-ND
338-EDC334Z5R5V-ND
338-EDC105Z5R5V-ND
338-EDC105Z5R5C-ND
338-EDC473Z5R5V-ND
338-EDC104Z5R5V-ND
338-EDC104Z5R5C-ND
338-EDC224Z5R5C-ND
338-EDC334Z5R5C-ND
338-EDC155Z5R5V-ND
338-EDC104Z6R3C-ND
338-EDC224Z6R3C-ND
338-EDC334Z6R3C-ND
338-EDC474Z5R5V-ND
338-EDC474Z6R3C-ND
338-EDC684Z6R3C-ND
EDC224Z5R5V
EDC224Z5R5H
EDC334Z5R5H
EDC105Z5R5H
EDC155Z5R5H
EDC474Z5R5H
EDC155Z5R5C
EDC474Z5R5C
EDC105Z6R3C
EDC473Z5R5H
EDC473Z5R5C
EDC104Z5R5H
EDC334Z5R5V
EDC105Z5R5V
EDC105Z5R5C
EDC473Z5R5V
EDC104Z5R5V
EDC104Z5R5C
EDC224Z5R5C
EDC334Z5R5C
EDC155Z5R5V
EDC104Z6R3C
EDC224Z6R3C
EDC334Z6R3C
EDC474Z5R5V
EDC474Z6R3C
EDC684Z6R3C