Buchanan 1776244-4 — 4-Position PCB Terminal Block, 5.00 mm Pitch
The TE Connectivity Buchanan 1776244-4 is a 4-position, single-level PCB terminal block from the Buchanan series, designed for fixed wire-to-board termination. The block accepts 14-22 AWG wire, terminated via a screw clamp with a leaf-spring wire guard, torqued to 0.51 Nm (4.5 Lb-In).
Screw-Clamp Termination with Specified Torque
Wire termination is via a screw - leaf spring, wire guard mechanism — the screw (M2.6 thread, steel, galvanized with chromate plating) compresses a stainless steel clamp plate onto the conductor. The specified torque of 0.51 Nm (4.5 Lb-In) is the installation limit; exceeding it can strip the threads or damage the housing. The leaf-spring design accommodates both solid and stranded wire without nicking the strands, and the wire guard prevents the screw from directly contacting the conductor bundle.
Horizontal Wire Entry — Board-Edge and Low-Profile Placement
Mating orientation is horizontal with the board — the wire entry axis is parallel to the PCB plane. This suits applications where the terminal block sits at the board edge, allowing wires to route along the enclosure wall rather than protruding above the component height. The through-hole mounting pins provide mechanical retention through the solder joint, and the side interlocking feature lets you snap additional blocks together to build a multi-position strip without separate jumpering hardware.