The **APTA-223-R** is a specific electronic component, primarily recognized as a **Tactile Switch** (Surface Mount Device - SMD) produced by manufacturers like ALPS or similar electronic component suppliers. It is designed for human-interface applications where physical feedback is required. --- ## Technical Specifications The following table summarizes the key electronic and physical characteristics of the APTA-223-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Tactile Switch | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Actuation Direction** | Vertical (Top Actuated) | | **Operating Force** | Typically 1.6N to 2.5N (depending on variant) | | **Contact Rating** | 50mA, 12V DC | | **Contact Resistance** | 100mΩ Max | | **Insulation Resistance** | 100MΩ Min (100V DC) | | **Operating Life** | ~50,000 to 100,000 cycles | | **Travel** | 0.25mm | --- ## Key Features ### 1. Tactile Feedback The "R" suffix often denotes a specific packaging or revision, but the core function is the "click" feel. This informs the user that the connection has been successfully bridged. ### 2. Compact Form Factor As an SMD component, it has a very small footprint, making it ideal for high-density Printed Circuit Boards (PCBs) found in modern consumer electronics. ### 3. Durability Designed for low-power signal switching, the internal metal dome ensures a crisp snap action and long-term reliability against oxidation. --- ## Applications The APTA-223-R is commonly integrated into the following devices: * **Consumer Electronics:** Volume buttons on smartphones, power buttons on tablets. * **Automotive:** Dashboard controls, key fobs, and steering wheel buttons. * **Industrial:** Interface panels for machinery and handheld testing equipment. * **Home Appliances:** Control panels for microwaves, washing machines, and thermostats. --- ## Typical Circuit Diagram In most applications, this switch is used as a simple **Normally Open (NO)** momentary switch: ```text [VCC] --- [Pull-up Resistor] ---+--- [Microcontroller Input] | [APTA-223-R] | [GND] ``` *When the button is pressed, the input pin is pulled to Ground (Logic Low).*