1N5441 semiconductor manufactured by Sylvania, listed as 1N5441 (circa 1979).

1N5361 semiconductor manufactured by Sylvania, listed as 1N5361 (circa 1979).

1N5273A semiconductor manufactured by Sylvania, listed as 1N5273A (circa 1979).

1N5234B semiconductor manufactured by Sylvania, listed as 1N5234B (circa 1979).

1N6864B semiconductor manufactured by Sylvania, listed as 1N6864B (circa 1979).

1N5684 semiconductor manufactured by Sylvania, listed as 1N5684 (circa 1979).

1N5561A semiconductor manufactured by Sylvania, listed as 1N5561A (circa 1979).

1N5435 semiconductor manufactured by Sylvania, listed as 1N5435 (circa 1979).

1N5360B semiconductor manufactured by Sylvania, listed as 1N5360B (circa 1979).

1N5273 semiconductor manufactured by Sylvania, listed as 1N5273 (circa 1979).

1N5234A semiconductor manufactured by Sylvania, listed as 1N5234A (circa 1979).

1N5863B semiconductor manufactured by Sylvania, listed as 1N5863B (circa 1979).

1N5683A semiconductor manufactured by Sylvania, listed as 1N5683A (circa 1979).

1N5561 semiconductor manufactured by Sylvania, listed as 1N5561 (circa 1979).

1N5434 semiconductor manufactured by Sylvania, listed as 1N5434 (circa 1979).

1N5360A semiconductor manufactured by Sylvania, listed as 1N5360A (circa 1979).

1N5272B semiconductor manufactured by Sylvania, listed as 1N5272B (circa 1979).

1N5234 semiconductor manufactured by Sylvania, listed as 1N5234 (circa 1979).

1N5862B semiconductor manufactured by Sylvania, listed as 1N5862B (circa 1979).

1N5683 semiconductor manufactured by Sylvania, listed as 1N5683 (circa 1979).