2N5745 semiconductor manufactured by Sylvania, listed as 2N5745 (circa 1979).

2N5742 semiconductor manufactured by Sylvania, listed as 2N5742 (circa 1979).

2N5741 semiconductor manufactured by Sylvania, listed as 2N5741 (circa 1979).

2N5738 semiconductor manufactured by Sylvania, listed as 2N5738 (circa 1979).

2N5718 semiconductor manufactured by Sylvania, listed as 2N5718 (circa 1979).

2N5713 semiconductor manufactured by Sylvania, listed as 2N5713 (circa 1979).

2N5712 semiconductor manufactured by Sylvania, listed as 2N5712 (circa 1979).

2N5711 semiconductor manufactured by Sylvania, listed as 2N5711 (circa 1979).

2N5698 semiconductor manufactured by Sylvania, listed as 2N5698 (circa 1979).

2N5690 semiconductor manufactured by Sylvania, listed as 2N5690 (circa 1979).

2N5689 semiconductor manufactured by Sylvania, listed as 2N5689 (circa 1979).

2N5687 semiconductor manufactured by Sylvania, listed as 2N5687 (circa 1979).

2N5682 semiconductor manufactured by Sylvania, listed as 2N5682 (circa 1979).

2N5681 semiconductor manufactured by Sylvania, listed as 2N5681 (circa 1979).

2N5672 semiconductor manufactured by Sylvania, listed as 2N5672 (circa 1979).

2N5671 semiconductor manufactured by Sylvania, listed as 2N5671 (circa 1979).

2N5668 semiconductor manufactured by Sylvania, listed as 2N5668 (circa 1979).

2N5660 semiconductor manufactured by Sylvania, listed as 2N5660 (circa 1979).

2N5656 semiconductor manufactured by Sylvania, listed as 2N5656 (circa 1979).

2N5655 semiconductor manufactured by Sylvania, listed as 2N5655 (circa 1979).