Multilayer electronic component

A multilayer electronic component, comprising:

• a body including a plurality of dielectric layers, and including first and second surfaces opposing in a first direction, third and fourth surfaces connected to the first and second surfaces and opposing in a second direction, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing in a third direction;
• a plurality of internal electrodes disposed inside the body, first ends of the plurality of internal electrodes alternately being exposed to the third or fourth surfaces;
• a first side margin portion disposed on the fifth surface at which the first side margin portion is connected to the plurality of internal electrodes;
• a second side margin portion disposed on the sixth surface at which the second side margin portion is connected to the plurality of internal electrodes;
• and
• an external electrode disposed on the third and fourth surfaces,
• wherein the body comprises an active portion in which the plurality of dielectric layers and the plurality of internal electrodes are alternately disposed in the first direction to form capacitance, an upper cover portion disposed on a first surface of the active portion in the first direction, and a lower cover portion disposed on a second surface of the active portion in the first direction,
• wherein when a dimension of the first side margin portion in the third direction is A, a dimension of the active portion in the first direction is B, a dimension of the lower cover portion in the first direction is C, a dimension of the upper cover portion in the first direction is D, and a dimension of the body in the first direction is T, D<C is satisfied, C/A is 2.60 or more and C/T is 0.080 or more, and
• wherein A is less than 20 μm.