1N5842B semiconductor manufactured by Sylvania, listed as 1N5842B (circa 1979).

1N5591A semiconductor manufactured by Sylvania, listed as 1N5591A (circa 1979).

1N5541B semiconductor manufactured by Sylvania, listed as 1N5541B (circa 1979).

1N5397 semiconductor manufactured by Sylvania, listed as 1N5397 (circa 1979).

1N5351B semiconductor manufactured by Sylvania, listed as 1N5351B (circa 1979).

1N5264A semiconductor manufactured by Sylvania, listed as 1N5264A (circa 1979).

1N5225A semiconductor manufactured by Sylvania, listed as 1N5225A (circa 1979).

1N5841B semiconductor manufactured by Sylvania, listed as 1N5841B (circa 1979).

1N5591 semiconductor manufactured by Sylvania, listed as 1N5591 (circa 1979).

1N5541A semiconductor manufactured by Sylvania, listed as 1N5541A (circa 1979).

1N5396 semiconductor manufactured by Sylvania, listed as 1N5396 (circa 1979).

1N5351A semiconductor manufactured by Sylvania, listed as 1N5351A (circa 1979).

1N5264 semiconductor manufactured by Sylvania, listed as 1N5264 (circa 1979).

1N5225 semiconductor manufactured by Sylvania, listed as 1N5225 (circa 1979).

1N5840B semiconductor manufactured by Sylvania, listed as 1N5840B (circa 1979).

1N5590B semiconductor manufactured by Sylvania, listed as 1N5590B (circa 1979).

1N5541 semiconductor manufactured by Sylvania, listed as 1N5541 (circa 1979).

1N5395 semiconductor manufactured by Sylvania, listed as 1N5395 (circa 1979).

1N5351 semiconductor manufactured by Sylvania, listed as 1N5351 (circa 1979).

1N5263B semiconductor manufactured by Sylvania, listed as 1N5263B (circa 1979).