The **SWT6-R3BTR** is a specific electronic component belonging to the **Tactile Switch** family. It is widely used in consumer electronics, automotive interfaces, and industrial controls due to its compact surface-mount design and reliability. ### 1. General Specifications The SWT6-R3BTR is a Sub-miniature Push-Button Tactile Switch. Below are the core technical specifications: | Feature | Specification | | :--- | :--- | | **Switch Type** | Tactile (Momentary) | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **Circuit** | SPST-NO (Single Pole Single Throw - Normally Open) | | **Actuator Height** | 3.1mm (Standard for the R3 series) | | **Operating Force** | Typically 160gf or 250gf (Depending on specific lot) | | **Contact Rating** | 50mA @ 12V DC | | **Life Cycle** | ~100,000 Cycles | --- ### 2. Key Physical Components The internal and external architecture consists of several critical electronic parts: * **Actuator (Stem):** The physical button that the user presses. In the "R3" variant, this is usually a raised plastic stem. * **Contact Dome:** A circular metal disc (usually stainless steel) that acts as the "snap" mechanism. When pressed, it collapses to complete the circuit and provides the tactile "click" feedback. * **Terminals:** Metal leads coated in silver or gold for soldering onto a PCB. The "BTR" suffix often indicates "Bulk" or "Tape & Reel" packaging for automated assembly. * **Housing/Base:** A high-temperature thermoplastic (LCP or Nylon) designed to withstand the heat of reflow soldering. --- ### 3. Terminal Layout and Schematic The switch typically features four pins, though it is a single-channel switch. The pins are paired internally to provide better mechanical stability on the PCB. ```text [ Terminal 1 ]-------( )-------[ Terminal 2 ] | (Internal Link) | [ Terminal 3 ]-------( )-------[ Terminal 4 ] ``` *Note: Pressing the actuator connects Terminals 1/2 to Terminals 3/4.* --- ### 4. Applications Because of its small footprint and SMT nature, the SWT6-R3BTR is commonly found in: 1. **Consumer Electronics:** Reset buttons on routers, volume buttons on handheld devices. 2. **Automotive:** Steering wheel controls or dashboard interfaces. 3. **Appliance:** Control panels for microwaves or washing machines.