2N2222 NPN Bipolar Transistor (TO-18 Metal Package)

The plastic TO-92 2N2222A pack already in the catalog is the everyday choice for most hobby circuits, but the original metal TO-18 package still has its place, better heat dissipation in a small footprint, and it's the exact package many older circuit designs and restoration projects were built around. Keeping this metal-can version in stock means a builder working from a vintage schematic, or one who specifically wants the metal can's thermal properties, doesn't have to substitute a different package and hope the circuit still behaves the same.