1N5383 semiconductor manufactured by Sylvania, listed as 1N5383 (circa 1979).

1N5344 semiconductor manufactured by Sylvania, listed as 1N5344 (circa 1979).

1N5256B semiconductor manufactured by Sylvania, listed as 1N5256B (circa 1979).

1N5210 semiconductor manufactured by Sylvania, listed as 1N5210 (circa 1979).

1N5752 semiconductor manufactured by Sylvania, listed as 1N5752 (circa 1979).

1N5583 semiconductor manufactured by Sylvania, listed as 1N5583 (circa 1979).

1N5533A semiconductor manufactured by Sylvania, listed as 1N5533A (circa 1979).

1N5382B semiconductor manufactured by Sylvania, listed as 1N5382B (circa 1979).

1N5343B semiconductor manufactured by Sylvania, listed as 1N5343B (circa 1979).

1N5256A semiconductor manufactured by Sylvania, listed as 1N5256A (circa 1979).

1N5209 semiconductor manufactured by Sylvania, listed as 1N5209 (circa 1979).

1N5751B semiconductor manufactured by Sylvania, listed as 1N5751B (circa 1979).

1N5582B semiconductor manufactured by Sylvania, listed as 1N5582B (circa 1979).

1N5533 semiconductor manufactured by Sylvania, listed as 1N5533 (circa 1979).

1N5382A semiconductor manufactured by Sylvania, listed as 1N5382A (circa 1979).

1N5343A semiconductor manufactured by Sylvania, listed as 1N5343A (circa 1979).

1N5256 semiconductor manufactured by Sylvania, listed as 1N5256 (circa 1979).

1N5208 semiconductor manufactured by Sylvania, listed as 1N5208 (circa 1979).

1N5751 semiconductor manufactured by Sylvania, listed as 1N5751 (circa 1979).

1N5582A semiconductor manufactured by Sylvania, listed as 1N5582A (circa 1979).