A straight angle conductor 10 is provided with a cladding material including a core-sheet metal 11 and conductor-sheet metals 12a, 12b that sandwich both surfaces of the core-sheet metal 11. The conductor-sheet metals 12a, 12b having a volume resistivity equal to or less than 5.0 (.mu..OMEGA.cm) wraps both sides of the core-sheet metal 11 having a thermal expansion coefficient equal to or less than 10 (.times.10.sup.-6/C. .degree.) to prevent the core-sheet metal 11 from being exposed to an outside of the conductor-sheet metals 12a, 12b. As a result, it prevents occurrence of an electrical potential difference in a boundary side face between the core-sheet metal 11 and the conductor-sheet metals 12a, 12b to improve corrosion resistance. Especially even when the straight angle conductor 10 is used on a silicon crystal wafer for a solar cell, damage of the silicon crystal wafer caused by heat occurring in soldering process of the conductor 10 or a change in temperature on use thereof for a solar cell is avoided.

 
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