The **SWT6-R4YTR** is a specific electronic component belonging to the **Tactile Switch** family. It is widely used in consumer electronics, automotive controls, and industrial interfaces where a physical click sensation (haptic feedback) is required. --- ## 1. General Specifications The SWT6-R4YTR is typically a miniature, surface-mount (SMT) push-button switch. Below are the common technical specifications for this series: | Property | Specification | | :--- | :--- | | **Type** | Tactile Switch (Momentary) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Circuit** | SPST-NO (Single Pole Single Throw, Normally Open) | | **Actuator Height** | Usually 4.3mm or 5.0mm (standard for the R4 series) | | **Operating Force** | 160gf to 260gf (Grams-force) | | **Contact Material** | Silver Plated Copper Alloy | | **Switching Life** | 50,000 to 100,000 cycles | --- ## 2. Key Features * **Tactile Feedback:** Provides a distinct "click" when pressed, ensuring the user knows the input has been registered. * **Momentary Action:** The electrical connection is only made while the button is actively being pressed; it returns to the "Open" state when released. * **Compact Footprint:** Designed for high-density PCB layouts, common in remote oils, keyboards, and handheld devices. * **Tape and Reel (TR):** The "TR" in the suffix indicates that the parts are packaged on a reel for use with automated Pick-and-Place assembly machines. --- ## 3. Internal Components & Materials To understand how it functions, we look at the internal construction: ### A. The Actuator (Stem) The plastic piece you press. Its height determines how far it protrudes from the device casing. ### B. The Contact Dome A tiny, curved metal disc (usually stainless steel). When you press the actuator, the dome collapses and touches the base contacts, completing the circuit. This collapse creates the "tactile" feel. ### C. The Base (Housing) Made of high-temperature thermoplastic (like LCP or Nylon) to withstand the heat of reflow soldering during manufacturing. ### D. Terminals The metal "legs" that are soldered to the PCB. In the SWT6 series, these are usually arranged in a 4-pin configuration for mechanical stability. --- ## 4. Typical Applications * **Consumer Electronics:** Volume buttons on smartphones or tablets. * **Computing:** Reset buttons on motherboards or peripherals. * **Automotive:** Dashboard controls, window switches, or key fobs. * **Industrial:** Interface panels for PLC controllers.