The 1N5401 is a three (3)
ampereaxial diodewith a peak repetitive reverse voltage ("V"RRM) of 100 volts. The cathode is normally denoted by a circle printed on the package body closest to that lead. Forms part of the 1N540x series (50 to 1000 volts).
* [http://www.fairchildsemi.com/pf/1N/1N5401.html Fairchild Semiconductors ]
* [http://www.onsemi.com/pub/Collateral/1N5400-D.PDF ON Semiconductors ]
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