Heavy-duty control and tube filament power transformer conforming to standard EIA RS-174 and electrical safety metrics, features a 117-volt AC primary input rating at 60 Hz, delivers a precise 6.3-volt center-tapped (6.3V CT) secondary output at a continuous 1.0-ampere current load capacity, 1500-volt dielectric strength insulation threshold rating, classic open-frame channel-mount chassis layout configuration with integrated flexible insulated wire leads, engineered to provide highly uniform filament heating and voltage step-down inside classic vacuum tube audio or radio frequency circuits. Unit Sourcing Compatibility: This component came out of classic tube preamplifiers, communications receiver decks, and legacy instrument test clusters. Exact Industry Equals: Thordarson 26F67 and Stancor P-8130. [1]