2N5880 semiconductor manufactured by Sylvania, listed as 2N5880 (circa 1979).

2N5879 semiconductor manufactured by Sylvania, listed as 2N5879 (circa 1979).

2N5878 semiconductor manufactured by Sylvania, listed as 2N5878 (circa 1979).

2N5876 semiconductor manufactured by Sylvania, listed as 2N5876 (circa 1979).

2N5874 semiconductor manufactured by Sylvania, listed as 2N5874 (circa 1979).

2N5871 semiconductor manufactured by Sylvania, listed as 2N5871 (circa 1979).

2N5870 semiconductor manufactured by Sylvania, listed as 2N5870 (circa 1979).

2N5869 semiconductor manufactured by Sylvania, listed as 2N5869 (circa 1979).

2N5865 semiconductor manufactured by Sylvania, listed as 2N5865 (circa 1979).

2N5849 semiconductor manufactured by Sylvania, listed as 2N5849 (circa 1979).

2N5848 semiconductor manufactured by Sylvania, listed as 2N5848 (circa 1979).

2N5847 semiconductor manufactured by Sylvania, listed as 2N5847 (circa 1979).

2N5846 semiconductor manufactured by Sylvania, listed as 2N5846 (circa 1979).

2N5840 semiconductor manufactured by Sylvania, listed as 2N5840 (circa 1979).

2N5839 semiconductor manufactured by Sylvania, listed as 2N5839 (circa 1979).

2N5838 semiconductor manufactured by Sylvania, listed as 2N5838 (circa 1979).

2N5830 semiconductor manufactured by Sylvania, listed as 2N5830 (circa 1979).

2N5821 semiconductor manufactured by Sylvania, listed as 2N5821 (circa 1979).

2N5820 semiconductor manufactured by Sylvania, listed as 2N5820 (circa 1979).

2N5818 semiconductor manufactured by Sylvania, listed as 2N5818 (circa 1979).