C&K Components Y31C4194KFP Tactile Switch SPST-NO SMT 4-Pin

C&K Components Y31C4194KFP is a compact surface-mount tactile switch (SPST-NO) with a four-pin footprint designed for PCB mounting in compact electronics. The Y31C4194KFP designation places it in C&K's line of tactile switches that are commonly chosen for portable devices, control panels, and embedded user interfaces where small size and reliable tactile feedback are important. The device uses four SMT pins to connect to a printed circuit board, enabling stable solder joints and convenient automated assembly. With an SPST-NO configuration, the switch provides a direct, normally-open path that closes when the actuator is pressed, delivering a clear, tactile user signal. The listing notes a packaging quantity of 1000 pieces, which supports manufacturing needs from prototyping to high-volume production. The four-pin SMT footprint and surface-mount termination are designed to simplify placement and soldering on densely packed PCBs, helping designers achieve precise button placement without sacrificing board real estate. This model's compact form factor and straightforward electrical behavior make it a suitable choice for small form-factor devices that require a discrete, tactile input method rather than membrane or capacitive alternatives.