1N5228B semiconductor manufactured by Allied Electronics, listed as 1N5228B (circa 1976).

1N5227B semiconductor manufactured by Allied Electronics, listed as 1N5227B (circa 1976).

1N5226B semiconductor manufactured by Allied Electronics, listed as 1N5226B (circa 1976).

1N5225B semiconductor manufactured by Allied Electronics, listed as 1N5225B (circa 1976).

1N5224B semiconductor manufactured by Allied Electronics, listed as 1N5224B (circa 1976).

1N5223B semiconductor manufactured by Allied Electronics, listed as 1N5223B (circa 1976).

1N5222B semiconductor manufactured by Allied Electronics, listed as 1N5222B (circa 1976).

1N5221B semiconductor manufactured by Allied Electronics, listed as 1N5221B (circa 1976).

1N4822 semiconductor manufactured by Allied Electronics, listed as 1N4822 (circa 1976).

1N4820 semiconductor manufactured by Allied Electronics, listed as 1N4820 (circa 1976).

1N4818 semiconductor manufactured by Allied Electronics, listed as 1N4818 (circa 1976).

1N4816 semiconductor manufactured by Allied Electronics, listed as 1N4816 (circa 1976).

1N4764A semiconductor manufactured by Allied Electronics, listed as 1N4764A (circa 1976).

1N4763A semiconductor manufactured by Allied Electronics, listed as 1N4763A (circa 1976).

1N4762A semiconductor manufactured by Allied Electronics, listed as 1N4762A (circa 1976).

1N4761A semiconductor manufactured by Allied Electronics, listed as 1N4761A (circa 1976).

1N4760A semiconductor manufactured by Allied Electronics, listed as 1N4760A (circa 1976).

1N4759A semiconductor manufactured by Allied Electronics, listed as 1N4759A (circa 1976).

1N4758A semiconductor manufactured by Allied Electronics, listed as 1N4758A (circa 1976).

1N4756A semiconductor manufactured by Allied Electronics, listed as 1N4756A (circa 1976).