According a method of manufacturing a lead frame of the present invention, a plurality of leads each having an inner lead portion and an outer lead portion are formed on a metal base having on its surface {HEAD ~ a nickel layer} by {TAIL ~ copper plating} 
by
According a method of manufacturing a lead frame of the present invention , a plurality of leads each having an inner lead portion and an outer lead portion are formed on a metal base having on its surface { HEAD ~ a nickel layer } by { TAIL ~ copper plating }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL