The Weidmuller LSF-SMT 3.81/04/180 3.5SN BK TU is a surface-mount technology (SMT) PCB terminal designed for automated reflow soldering processes. This connector utilizes a PUSH IN conductor connection system, simplifying installation and ensuring reliable connections. It accommodates conductor sizes from 0.20 to 1.5 mm² (IEC) or 24 to 16 AWG (UL), and is rated for a voltage of 320V (IEC) / 300V (UL) and a current of 17.5A (IEC) / 12A (UL). The connector's design optimizes pin lengths for efficient soldering and provides a touch-safe protection feature. It is commonly used in industrial automation, control systems, and power distribution applications where reliable and automated PCB connections are required.