The **KLS-3-2-R** is a specific electronic component, most commonly categorized as a **Surface Mount Device (SMD) Tactile Switch** or a micro-miniature push button. These are widely used in consumer electronics, automotive controls, and industrial interfaces. --- ### 1. General Specifications The KLS-3-2-R series typically refers to a standard 3x6mm tactile switch. Below are the common technical parameters for this part: | Parameter | Typical Value | |:---|:---| | **Dimensions** | 3mm x 6mm | | **Mounting Type** | SMD (Surface Mount Device) | | **Actuation Force** | 160gf or 250gf (Common variants) | | **Switch Type** | Momentary (Normally Open) | | **Current Rating** | 50mA | | **Voltage Rating** | 12V DC | | **Contact Resistance** | ≤ 100mΩ | ### 2. Physical Structure The component consists of four main parts: 1. **Cover:** Usually made of stainless steel or plastic to protect the internal mechanism. 2. **Actuator (Button):** The part the user presses. In the "R" variant, this is often a black or colored plastic stem. 3. **Contact Dome:** A metal disk that snaps downward when pressed to complete the circuit and provides tactile feedback (the "click"). 4. **Base:** High-temperature resistant plastic containing the terminals for soldering. ### 3. Pinout and Circuitry The KLS-3-2-R is a **SPST (Single Pole Single Throw)** switch. It typically has two or four leads, but they are electrically connected in pairs. ```text (Terminal 1) ----\ ---- (Terminal 2) | | (Switch) (Terminal 3) ----/ ---- (Terminal 4) ``` ### 4. Part Number Breakdown (KLS Prefix) While nomenclature can vary slightly by manufacturer, the code usually breaks down as follows: * **KLS:** Manufacturer/Series Identifier. * **3:** Width dimension (3mm). * **2:** Height/Type indicator. * **R:** Packaging type (usually "Tape and Reel" for automated pick-and-place assembly). --- ### 5. Common Applications * **Consumer Electronics:** Mobile phones, remote controls, and headsets. * **Computing:** Mouse buttons, reset switches on motherboards. * **Industrial:** Interface panels for PLC controllers. * **Medical:** Handheld diagnostic tools.