Contact and method of manufacturing same

A method of manufacturing a contact capable of electrically connecting a first surface and a second surface that is disposed perpendicular to the first surface,

• wherein the contact includes:
• a base portion including a bonding surface soldered to the first surface;
• and
• an elastic contact portion configured to elastically deform to come into pressed contact with the second surface,
• the elastic contact portion includes:
• a planar portion configured to be in a planar shape;
• and
• a projection portion that is disposed on one surface of the planar portion and protrudes from the one surface,
• the elastic contact portion is configured to come into pressed contact with the second surface at the projection portion, in forming the projection portion on the planar portion, the projection portion is formed such that a dimensional ratio H/L of height H and length L satisfies 0.25 ≤H/L≤0.44, where H is a dimension in a direction perpendicular to the one surface of the projection portion and L is a dimension in a direction parallel to the one surface of the projection portion,
• the projection portion is configured such that the height H satisfies 0.089 mm≤H≤0.296 mm and the length L satisfies 0.226 mm≤L≤0.788 mm, and after a processing in which temperature periodically changes between −40° C. and 125° C. is performed for 167 cycles by a heat cycle test, a measured DC resistance value is 30 mΩ or less.