Inductive device

An inductive device, comprising:

• a laminated body including an insulator and a plurality of conductive wiring layers stacked in a first direction, wherein the conductive wiring layers are embedded within the insulator, and any two adjacent ones of the conductive wiring layers are electrically connected to each other to form a coiled conductor that extends spirally;
• and two external electrodes disposed on the laminated body and electrically connected to the coiled conductor, wherein the two external electrodes are spaced apart from each other;
• wherein each of the external electrodes includes one or more first stack layers and one or more second stack layers that are stacked in the first direction, each of the first stack layers includes one or more first patterned layers, and each of the second stack layers includes one or more second patterned layers, and an area of each of the first patterned layers is less than an area of each of the second patterned layers, and each of the first patterned layers and each of the second patterned layers partially overlap with each other:
• wherein, a ratio between a number of the second patterned layers of one second stack layer and a number of the first patterned layers of one first stack layer is 3:2, wherein the first stack layers and the second stack layers form a base plate, a lateral plate, and a plurality of stress dispersion structures,
• wherein the stress dispersion structures are formed by a portion of each of the second patterned layers that does not overlap with any one of the first patterned layers,
• wherein the stress dispersion structures extend toward the coiled conductor and protrude from at least one of the base plate and the lateral wall, and the stress dispersing structures are spaced apart from each other and engaged with the laminated body.