The TS-1091B-A1B3-D2 is a tactile switch manufactured by Yuandi, featuring a 4.5*4.5*3.8mm DIP footprint and RoHS compliance. This switch features DIP4.5*4.5*3.8mm dimensions, and is used for tactile switching operations in various applications. It consists of a plunger head, adhesive spacer, no-clean flux, and tin plated pins. This switch is RoHS compliant, meaning it does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls or polybrominated diphenyl ethers. The TS-1091B-A1B3-D2 tactile switch is suitable for operations requiring low power consumption and secure, sturdy switching.