Wire probes, generally called as needle type probe has elasticity on itself. This wire probes have simple construction using highly elastic wire to enhance spring force.
Generates pin pressure by utilizing elastic change and recovering of wire when pressure would be applied to probe. Standard test fixture is consisted with plate to fix wire probe, and to determine position on each chips.
Wire probe make possible to contact fine pitch point.
It has high pin pressure compared with same diameter spring probe.
Possible to stable electric resistance.
Built in structure make possible stable electric resistance and long life.
Pin pressure of wire probe is influenced material, diameter and the length of guide plate and fixing plate. And, it raise suddenly and become stable at proper stroke. But, in the case of over stroke, it become reduce.