An electronic component comprising a secondary side coil including a plurality of first coil parts and a plurality of second coil parts, wherein each of the first and second coil parts (13a; 13b) includes: a plate-like base part (131a; 132a) extending in a horizontal direction; a leg part (131c; 132c) formed on the base part (131a; 132a) in a vertical downward direction; and a pin part (131d; 132d) formed at a tip of the leg part (131c; 132c) and the leg part (131c; 132c) extends from one end side of the base part; and a planted part planted in a vertical upward direction from another end side of the base part; and a flange part (131f; 132f) formed at a tip of the planted part (131e; 132e) which extends outward in the horizontal direction from the tip of the planted part (131e; 132e); and wherein lengths of the leg parts (131c; 132c) and the planted parts (131e; 132e) of each of the plurality of coil parts (13a; 13b) are different from one another; and wherein the pin part (131d; 132d) is configured to be attached to a bus bar (31; 32); wherein the second coil part is different in shape from the first coil part in that the end parts where the leg part and the planted part are formed in the base part are reversed in position; and wherein, in a state where the first coil part and the second coil part are stacked in the vertical direction, the secondary coil includes the leg parts of the second coil part formed to face the leg parts of the first coil part in the horizontal direction and the flange parts (131f; 132f) forming layers in the vertical direction. a secondary side coil including a plurality of first coil parts and a plurality of second coil parts, wherein each of the first and second coil parts (13a; 13b) includes: a plate-like base part (131a; 132a) extending in a horizontal direction; a leg part (131c; 132c) formed on the base part (131a; 132a) in a vertical downward direction; and a pin part (131d; 132d) formed at a tip of the leg part (131c; 132c) and the leg part (131c; 132c) extends from one end side of the base part; and a planted part planted in a vertical upward direction from another end side of the base part; and a flange part (131f; 132f) formed at a tip of the planted part (131e; 132e) which extends outward in the horizontal direction from the tip of the planted part (131e; 132e); and wherein lengths of the leg parts (131c; 132c) and the planted parts (131e; 132e) of each of the plurality of coil parts (13a; 13b) are different from one another; and wherein the pin part (131d; 132d) is configured to be attached to a bus bar (31; 32); wherein the second coil part is different in shape from the first coil part in that the end parts where the leg part and the planted part are formed in the base part are reversed in position; and wherein, in a state where the first coil part and the second coil part are stacked in the vertical direction, the secondary coil includes the leg parts of the second coil part formed to face the leg parts of the first coil part in the horizontal direction and the flange parts (131f; 132f) forming layers in the vertical direction. a plate-like base part (131a; 132a) extending in a horizontal direction; a leg part (131c; 132c) formed on the base part (131a; 132a) in a vertical downward direction; and a pin part (131d; 132d) formed at a tip of the leg part (131c; 132c) and the leg part (131c; 132c) extends from one end side of the base part; and a planted part planted in a vertical upward direction from another end side of the base part; and a flange part (131f; 132f) formed at a tip of the planted part (131e; 132e) which extends outward in the horizontal direction from the tip of the planted part (131e; 132e); and wherein lengths of the leg parts (131c; 132c) and the planted parts (131e; 132e) of each of the plurality of coil parts (13a; 13b) are different from one another; and wherein the pin part (131d; 132d) is configured to be attached to a bus bar (31; 32); wherein the second coil part is different in shape from the first coil part in that the end parts where the leg part and the planted part are formed in the base part are reversed in position; and wherein, in a state where the first coil part and the second coil part are stacked in the vertical direction, the secondary coil includes the leg parts of the second coil part formed to face the leg parts of the first coil part in the horizontal direction and the flange parts (131f; 132f) forming layers in the vertical direction.