How is the cathode lead of a semiconductor diode often marked on the package?

The cathode lead of a semiconductor diode is commonly marked on the package with a stripe. This marking helps to identify which lead is the cathode, as diodes are polarized components that must be connected in the correct orientation to function properly. When looking at the diode, the stripe typically indicates the side that connects to the cathode, while the unmarked side is the anode. This visual cue is important for both professionals and hobbyists to ensure they wire the diode correctly in circuits, avoiding potential damage or malfunction.

Though there are other potential markings or identifiers for cathodes in different contexts, the stripe is a standardized and widely recognized method specifically for diodes, allowing for quick identification in both design and practical applications.