The GRF172-5 surface-mount Centigrid® relay is an ultra miniature, hermetically sealed, armature relay for 2.5 GHz RF applications. This features a unique ground shield that isolates and shields each lead to ensure excellent contact-to-contact and pole-to-pole isolation. This ground shield provides a ground interface that results in improved high frequency performance as well as parametric repeatability. This extends performance advantages over similar RF devices that simply offer formed leads for surface mounting.