Multilayer ceramic electronic component, method for manufacturing same, and circuit board

A laminated ceramic electronic component includes: a ceramic body having internal electrodes laminated in a first axis direction and an end surface perpendicular to a second axis orthogonal to the first axis, the internal electrodes being alternately led out to the end surface; and external electrodes covering end surfaces of the ceramic body, in which each external electrode includes: a base film formed on a corresponding end surface of the end surfaces and connected to a plurality of internal electrodes led out to the corresponding end surface; a first Ni film formed on the base film; a metal film that is formed on the first Ni film and contains, as a main component, a metal having a lower ionization tendency than Ni; a second Ni film formed on the metal film and having a hydrogen concentration higher than that of the first Ni film; and a surface layer film formed on the second Ni film. 本发明提供一种层叠陶瓷电子部件，包括：陶瓷体，其具有在第一轴方向上层叠的内部电极和垂直于与第一轴正交的第二轴的端面，内部电极交替地引出到端面；以及覆盖陶瓷体的端面的外部电极，其中，每个外部电极包括：底膜，其形成于端面中的对应端面上并与引出至对应