1N5276A semiconductor manufactured by Sylvania, listed as 1N5276A (circa 1979).

1N5237B semiconductor manufactured by Sylvania, listed as 1N5237B (circa 1979).

1N5873B semiconductor manufactured by Sylvania, listed as 1N5873B (circa 1979).

1N5699A semiconductor manufactured by Sylvania, listed as 1N5699A (circa 1979).

1N5564A semiconductor manufactured by Sylvania, listed as 1N5564A (circa 1979).

1N5450 semiconductor manufactured by Sylvania, listed as 1N5450 (circa 1979).

1N5363B semiconductor manufactured by Sylvania, listed as 1N5363B (circa 1979).

1N5276 semiconductor manufactured by Sylvania, listed as 1N5276 (circa 1979).

1N5237A semiconductor manufactured by Sylvania, listed as 1N5237A (circa 1979).

1N5872B semiconductor manufactured by Sylvania, listed as 1N5872B (circa 1979).

1N5699 semiconductor manufactured by Sylvania, listed as 1N5699 (circa 1979).

1N5564 semiconductor manufactured by Sylvania, listed as 1N5564 (circa 1979).

1N5448A semiconductor manufactured by Sylvania, listed as 1N5448A (circa 1979).

1N5363A semiconductor manufactured by Sylvania, listed as 1N5363A (circa 1979).

1N5275B semiconductor manufactured by Sylvania, listed as 1N5275B (circa 1979).

1N5237 semiconductor manufactured by Sylvania, listed as 1N5237 (circa 1979).

1N5871B semiconductor manufactured by Sylvania, listed as 1N5871B (circa 1979).

1N5696A semiconductor manufactured by Sylvania, listed as 1N5696A (circa 1979).

1N5563B semiconductor manufactured by Sylvania, listed as 1N5563B (circa 1979).

1N5448 semiconductor manufactured by Sylvania, listed as 1N5448 (circa 1979).