2N2432 semiconductor manufactured by Sylvania, listed as 2N2432 (circa 1979).

2N2431 semiconductor manufactured by Sylvania, listed as 2N2431 (circa 1979).

2N2430 semiconductor manufactured by Sylvania, listed as 2N2430 (circa 1979).

2N2429 semiconductor manufactured by Sylvania, listed as 2N2429 (circa 1979).

2N2428 semiconductor manufactured by Sylvania, listed as 2N2428 (circa 1979).

2N2427 semiconductor manufactured by Sylvania, listed as 2N2427 (circa 1979).

2N2426 semiconductor manufactured by Sylvania, listed as 2N2426 (circa 1979).

2N2425 semiconductor manufactured by Sylvania, listed as 2N2425 (circa 1979).

2N2424 semiconductor manufactured by Sylvania, listed as 2N2424 (circa 1979).

2N2423 semiconductor manufactured by Sylvania, listed as 2N2423 (circa 1979).

2N2417 semiconductor manufactured by Sylvania, listed as 2N2417 (circa 1979).

2N2415 semiconductor manufactured by Sylvania, listed as 2N2415 (circa 1979).

2N2413 semiconductor manufactured by Sylvania, listed as 2N2413 (circa 1979).

2N2412 semiconductor manufactured by Sylvania, listed as 2N2412 (circa 1979).

2N2411 semiconductor manufactured by Sylvania, listed as 2N2411 (circa 1979).

2N2406 semiconductor manufactured by Sylvania, listed as 2N2406 (circa 1979).

2N2405S semiconductor manufactured by Sylvania, listed as 2N2405S (circa 1979).

2N2405L semiconductor manufactured by Sylvania, listed as 2N2405L (circa 1979).

2N2405 semiconductor manufactured by Sylvania, listed as 2N2405 (circa 1979).

2N2402 semiconductor manufactured by Sylvania, listed as 2N2402 (circa 1979).