1N5336 semiconductor manufactured by Sylvania, listed as 1N5336 (circa 1979).

1N5249 semiconductor manufactured by Sylvania, listed as 1N5249 (circa 1979).

1N5741B semiconductor manufactured by Sylvania, listed as 1N5741B (circa 1979).

1N5575A semiconductor manufactured by Sylvania, listed as 1N5575A (circa 1979).

1N5525A semiconductor manufactured by Sylvania, listed as 1N5525A (circa 1979).

1N5375 semiconductor manufactured by Sylvania, listed as 1N5375 (circa 1979).

1N5335B semiconductor manufactured by Sylvania, listed as 1N5335B (circa 1979).

1N5248B semiconductor manufactured by Sylvania, listed as 1N5248B (circa 1979).

1N5170 semiconductor manufactured by Sylvania, listed as 1N5170 (circa 1979).

1N5741 semiconductor manufactured by Sylvania, listed as 1N5741 (circa 1979).

1N5575 semiconductor manufactured by Sylvania, listed as 1N5575 (circa 1979).

1N5525 semiconductor manufactured by Sylvania, listed as 1N5525 (circa 1979).

1N5374B semiconductor manufactured by Sylvania, listed as 1N5374B (circa 1979).

1N5335A semiconductor manufactured by Sylvania, listed as 1N5335A (circa 1979).

1N5248A semiconductor manufactured by Sylvania, listed as 1N5248A (circa 1979).

1N5144A semiconductor manufactured by Sylvania, listed as 1N5144A (circa 1979).

1N5740B semiconductor manufactured by Sylvania, listed as 1N5740B (circa 1979).

1N5574B semiconductor manufactured by Sylvania, listed as 1N5574B (circa 1979).

1N5524B semiconductor manufactured by Sylvania, listed as 1N5524B (circa 1979).

1N5374A semiconductor manufactured by Sylvania, listed as 1N5374A (circa 1979).