Land grid array connector including heterogeneous contact elements

An electrical connector for electrically connecting to contacts of a land grid array formed on an electronic component, the connector comprising:

• a dielectric layer including opposing first and second surfaces;
• and
• a plurality of contact elements, pre-formed in an array in a sheet of conductive spring material, the contact elements including generally opposed elastic portions that are displaced outwardly from the sheet, the sheet being bonded to the first surface such that the elastic portions extend outwardly above the first surface of the dielectric layer, each of the contact elements comprising a base portion of conductive material that is singulated from the base portions of adjacent ones of the contact elements, and the elastic portions of conductive material are formed integrally with the base portion,
• the plurality of contact elements comprising a first group of contact elements and a second group of contact elements, the first group of contact elements having an operating property based on a formation thereof in the sheet that is different than an operating property of the second group of contact elements,
• the elastic portions of the contact elements of the first group having a first length and the elastic portions of the contact elements of the second group having a second length, different from the first length, and each elastic portion having an elastic working range on an order of the first or second length of the elastic portion of the respective contact element to allow staggered contact with the land grid array during installation or removal.