1N5737 semiconductor manufactured by Sylvania, listed as 1N5737 (circa 1979).

1N5572A semiconductor manufactured by Sylvania, listed as 1N5572A (circa 1979).

1N5522 semiconductor manufactured by Sylvania, listed as 1N5522 (circa 1979).

1N5372 semiconductor manufactured by Sylvania, listed as 1N5372 (circa 1979).

1N5330 semiconductor manufactured by Sylvania, listed as 1N5330 (circa 1979).

1N5245B semiconductor manufactured by Sylvania, listed as 1N5245B (circa 1979).

1N5893B semiconductor manufactured by Sylvania, listed as 1N5893B (circa 1979).

1N5736B semiconductor manufactured by Sylvania, listed as 1N5736B (circa 1979).

1N5572 semiconductor manufactured by Sylvania, listed as 1N5572 (circa 1979).

1N5521B semiconductor manufactured by Sylvania, listed as 1N5521B (circa 1979).

1N5371B semiconductor manufactured by Sylvania, listed as 1N5371B (circa 1979).

1N5320 semiconductor manufactured by Sylvania, listed as 1N5320 (circa 1979).

1N5245A semiconductor manufactured by Sylvania, listed as 1N5245A (circa 1979).

1N5892B semiconductor manufactured by Sylvania, listed as 1N5892B (circa 1979).

1N5736 semiconductor manufactured by Sylvania, listed as 1N5736 (circa 1979).

1N5571B semiconductor manufactured by Sylvania, listed as 1N5571B (circa 1979).

1N5521A semiconductor manufactured by Sylvania, listed as 1N5521A (circa 1979).

1N5371A semiconductor manufactured by Sylvania, listed as 1N5371A (circa 1979).

1N5319 semiconductor manufactured by Sylvania, listed as 1N5319 (circa 1979).

1N5245 semiconductor manufactured by Sylvania, listed as 1N5245 (circa 1979).