2N5809 semiconductor manufactured by Sylvania, listed as 2N5809 (circa 1979).

2N5808 semiconductor manufactured by Sylvania, listed as 2N5808 (circa 1979).

2N5807 semiconductor manufactured by Sylvania, listed as 2N5807 (circa 1979).

2N5806 semiconductor manufactured by Sylvania, listed as 2N5806 (circa 1979).

2N5805 semiconductor manufactured by Sylvania, listed as 2N5805 (circa 1979).

2N5804 semiconductor manufactured by Sylvania, listed as 2N5804 (circa 1979).

2N5790 semiconductor manufactured by Sylvania, listed as 2N5790 (circa 1979).

2N5789 semiconductor manufactured by Sylvania, listed as 2N5789 (circa 1979).

2N5788 semiconductor manufactured by Sylvania, listed as 2N5788 (circa 1979).

2N5787 semiconductor manufactured by Sylvania, listed as 2N5787 (circa 1979).

2N5785 semiconductor manufactured by Sylvania, listed as 2N5785 (circa 1979).

2N5784 semiconductor manufactured by Sylvania, listed as 2N5784 (circa 1979).

2N5780 semiconductor manufactured by Sylvania, listed as 2N5780 (circa 1979).

2N5760 semiconductor manufactured by Sylvania, listed as 2N5760 (circa 1979).

2N5759 semiconductor manufactured by Sylvania, listed as 2N5759 (circa 1979).

2N5758 semiconductor manufactured by Sylvania, listed as 2N5758 (circa 1979).

2N5757 semiconductor manufactured by Sylvania, listed as 2N5757 (circa 1979).

2N5756 semiconductor manufactured by Sylvania, listed as 2N5756 (circa 1979).

2N5755 semiconductor manufactured by Sylvania, listed as 2N5755 (circa 1979).

2N5754 semiconductor manufactured by Sylvania, listed as 2N5754 (circa 1979).