This pack includes 50 pieces of SMD 2pin 3x4 mm tactile push button switches with momentary action. Each switch has a small 3x4 mm footprint and a twopin SMT terminal for straightforward PCB mounting. The tactile switch provides a crisp actuation feel and returns to the open circuit when released, making it suitable for momentary input in compact electronics. Key benefits Spaceefficient 3x4 mm footprint for compact PCBs and dense layouts. Clear tactile feedback confirms user actuation. Momentary action delivers a temporary electrical signal on press. Twopin SMT design simplifies soldering and PCB routing. Bulk pack of 50 pieces provides replacements or multiproject coverage. Key attributes Function: momentary tactile push button switch. Type: SMD, twopin. Footprint: 3x4 mm. Action: tactile, momentary. Mounting: surfacemount technology (SMT). Material: not specified in listing. Packaging: 50 pieces per pack. Applications and use cases Control buttons and user inputs on compact consumer electronics and hobby projects (eg, Arduino, Raspberry Pi Pico, and other microcontroller boards). Replacement switches in small handheld devices, wearables, or thinprofile gadgets. Prototyping and production where spacesaving momentary switches are required. Compatibility notes Designed for standard 2pin SMT PCB footprints; suitable for reliable surfacemount assemblies.