SL3.5/4/90G3.2 – WEIDMULLER

The WEIDMULLER SL3.5/4/90G3.2 PCB terminal block, part number 1605090000, is a 3.5mm pitch, 4-pole, 90-degree (right-angle) entry connector designed for wire-to-board applications. The “SL” designation indicates a screw-clamp termination method. The 3.2mm dimension likely refers to the pin length or the height of the insulator above the PCB after mounting. This terminal block accepts solid or stranded wire within a specified gauge range, typically 28-18 AWG, dependent on the Weidmuller specification sheet. The RoHS compliance confirms adherence to Restriction of Hazardous Substances directives, limiting the presence of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE) in its construction. The insulator material is likely a polyamide (PA) or similar high-temperature plastic suitable for reflow soldering processes, offering good electrical insulation and mechanical strength.