1N5335 semiconductor manufactured by Sylvania, listed as 1N5335 (circa 1979).

1N5248 semiconductor manufactured by Sylvania, listed as 1N5248 (circa 1979).

1N5144 semiconductor manufactured by Sylvania, listed as 1N5144 (circa 1979).

1N5740 semiconductor manufactured by Sylvania, listed as 1N5740 (circa 1979).

1N5574A semiconductor manufactured by Sylvania, listed as 1N5574A (circa 1979).

1N5524A semiconductor manufactured by Sylvania, listed as 1N5524A (circa 1979).

1N5374 semiconductor manufactured by Sylvania, listed as 1N5374 (circa 1979).

1N5334B semiconductor manufactured by Sylvania, listed as 1N5334B (circa 1979).

1N5247B semiconductor manufactured by Sylvania, listed as 1N5247B (circa 1979).

1N5141A semiconductor manufactured by Sylvania, listed as 1N5141A (circa 1979).

1N5739B semiconductor manufactured by Sylvania, listed as 1N5739B (circa 1979).

1N5574 semiconductor manufactured by Sylvania, listed as 1N5574 (circa 1979).

1N5524 semiconductor manufactured by Sylvania, listed as 1N5524 (circa 1979).

1N5373B semiconductor manufactured by Sylvania, listed as 1N5373B (circa 1979).

1N5334A semiconductor manufactured by Sylvania, listed as 1N5334A (circa 1979).

1N5247A semiconductor manufactured by Sylvania, listed as 1N5247A (circa 1979).

1N5141 semiconductor manufactured by Sylvania, listed as 1N5141 (circa 1979).

1N5739 semiconductor manufactured by Sylvania, listed as 1N5739 (circa 1979).

1N5573B semiconductor manufactured by Sylvania, listed as 1N5573B (circa 1979).

1N5523A semiconductor manufactured by Sylvania, listed as 1N5523A (circa 1979).