1N5240 semiconductor manufactured by Sylvania, listed as 1N5240 (circa 1979).

1N5879B semiconductor manufactured by Sylvania, listed as 1N5879B (circa 1979).

1N5719 semiconductor manufactured by Sylvania, listed as 1N5719 (circa 1979).

1N5566A semiconductor manufactured by Sylvania, listed as 1N5566A (circa 1979).

1N5464 semiconductor manufactured by Sylvania, listed as 1N5464 (circa 1979).

1N5365B semiconductor manufactured by Sylvania, listed as 1N5365B (circa 1979).

1N5278A semiconductor manufactured by Sylvania, listed as 1N5278A (circa 1979).

1N5239B semiconductor manufactured by Sylvania, listed as 1N5239B (circa 1979).

1N5878B semiconductor manufactured by Sylvania, listed as 1N5878B (circa 1979).

1N5713 semiconductor manufactured by Sylvania, listed as 1N5713 (circa 1979).

1N5566 semiconductor manufactured by Sylvania, listed as 1N5566 (circa 1979).

1N5463A semiconductor manufactured by Sylvania, listed as 1N5463A (circa 1979).

1N5365A semiconductor manufactured by Sylvania, listed as 1N5365A (circa 1979).

1N5278 semiconductor manufactured by Sylvania, listed as 1N5278 (circa 1979).

1N5239A semiconductor manufactured by Sylvania, listed as 1N5239A (circa 1979).

1N5877B semiconductor manufactured by Sylvania, listed as 1N5877B (circa 1979).

1N5712 semiconductor manufactured by Sylvania, listed as 1N5712 (circa 1979).

1N5565B semiconductor manufactured by Sylvania, listed as 1N5565B (circa 1979).

1N5463 semiconductor manufactured by Sylvania, listed as 1N5463 (circa 1979).

1N5365 semiconductor manufactured by Sylvania, listed as 1N5365 (circa 1979).