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The SEMICONDUCTOR IDENTIFICATION SYSTEM is an alphanumerical code used to
distinguish one semiconductor from another. It is used for diodes, transistors, and many other special
semiconductor devices.
DIODE MARKINGS are letters and symbols placed on the diode by manufacturers to distinguish
one end of the diode from the other. In some cases, an unusual shape or the addition of color code bands
is used to distinguish the cathode from the anode.
