Couplings and coupling components which prevent relative rotation between tubular members when break away torque forces are applied to the tubular members. The utensils when manually manipulated are easily detached for use. A power MOS transistor is attached to the metal casing through a plate member made of an insulating material. In a specific embodiment, the solar cell includes a transparent polymeric member and a plurality of photovoltaic regions provided within a portion of the transparent polymeric member.