C & K IP40 Black Button Tactile Switch is a compact, high-quality SPST momentary switch designed for precise control in electronic devices, PCB assemblies, and compact instrumentation. With a 3.5mm diameter actuator and surface-mount (SMD) design, it is ideal for space-constrained applications requiring reliable performance and consistent tactile feedback. Rated at 50mA, this switch is suitable for low-current control circuits used in consumer electronics, communication devices, medical equipment, and industrial control systems. Its IP40-rated construction provides basic protection against solid particles, ensuring dependable operation. Engineered for durability and accuracy, this C & K tactile switch is perfect for professional-grade electronic designs and high-density circuit boards.