The part number **10TP-U66-R** refers to a specific type of **Tactile Switch** (commonly known as a tact switch or push-button) often manufactured by companies like HRO or similar electronic component providers. These switches are momentary action devices, meaning they only close the circuit while being pressed. --- ### 1. Technical Specifications The "10TP" series typically follows a standard footprint for surface mount technology (SMT) or through-hole designs. Below are the general specifications for this component: | Feature | Specification | | :--- | :--- | | **Switch Type** | Tactile (Momentary) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Actuation Force** | 160gf to 250gf (Common range) | | **Contact Arrangement** | SPST-NO (Single Pole Single Throw, Normally Open) | | **Travel** | 0.25mm ± 0.1mm | | **Life Cycle** | 100,000 to 500,000 cycles | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Physical Dimensions & Materials The "U66" suffix often designates the height and the footprint of the plunger. * **Size:** Generally a 4.5mm x 4.5mm or 6mm x 6mm square base. * **Height:** The "66" usually refers to a total height of **6.6mm** from the PCB to the top of the button. * **Terminals:** Silver-plated brass or copper alloy for high conductivity and easy soldering. * **Housing:** High-temperature plastic (LCP or Nylon) to withstand reflow soldering processes. --- ### 3. Part Number Breakdown (Typical Decoding) | Segment | Meaning | | :--- | :--- | | **10TP** | Series Identifier (Tactile Push) | | **U** | Plunger/Stem shape (often indicates a square or round stem) | | **66** | Height code (6.6mm) | | **R** | Packaging (Tape & Reel for automated assembly) | --- ### 4. Common Applications Due to their small footprint and tactile feedback ("click" feel), these switches are used in: * **Consumer Electronics:** Remote controls, cameras, and headphones. * **Computing:** Mouse buttons, reset switches on motherboards. * **Industrial:** Control panels and membrane keypad interfaces. * **IoT Devices:** Pairing buttons on smart home sensors. --- ### 5. Footprint Example If you are designing a PCB for this part, the standard pad layout usually involves four pins, where pins are internally connected in pairs. ```text [Pad 1] ---- (Internal) ---- [Pad 2] | | (Switch) (Switch) | | [Pad 3] ---- (Internal) ---- [Pad 4] ```