1N5606 semiconductor manufactured by Sylvania, listed as 1N5606 (circa 1979).

1N5545B semiconductor manufactured by Sylvania, listed as 1N5545B (circa 1979).

1N5409 semiconductor manufactured by Sylvania, listed as 1N5409 (circa 1979).

1N5355B semiconductor manufactured by Sylvania, listed as 1N5355B (circa 1979).

1N5229B semiconductor manufactured by Sylvania, listed as 1N5229B (circa 1979).

1N5852B semiconductor manufactured by Sylvania, listed as 1N5852B (circa 1979).

1N5605 semiconductor manufactured by Sylvania, listed as 1N5605 (circa 1979).

1N5545A semiconductor manufactured by Sylvania, listed as 1N5545A (circa 1979).

1N5408 semiconductor manufactured by Sylvania, listed as 1N5408 (circa 1979).

1N5355A semiconductor manufactured by Sylvania, listed as 1N5355A (circa 1979).

1N5268 semiconductor manufactured by Sylvania, listed as 1N5268 (circa 1979).

1N5229A semiconductor manufactured by Sylvania, listed as 1N5229A (circa 1979).

1N5852A semiconductor manufactured by Sylvania, listed as 1N5852A (circa 1979).

1N5594B semiconductor manufactured by Sylvania, listed as 1N5594B (circa 1979).

1N5545 semiconductor manufactured by Sylvania, listed as 1N5545 (circa 1979).

1N5407 semiconductor manufactured by Sylvania, listed as 1N5407 (circa 1979).

1N5229 semiconductor manufactured by Sylvania, listed as 1N5229 (circa 1979).

1N5852 semiconductor manufactured by Sylvania, listed as 1N5852 (circa 1979).

1N5594A semiconductor manufactured by Sylvania, listed as 1N5594A (circa 1979).

1N5544B semiconductor manufactured by Sylvania, listed as 1N5544B (circa 1979).