The part number **0B1PK-R** (often associated with manufacturers like **E-Switch** or related electronic component distributors) typically refers to a specific configuration of a **Tactile Switch** or a sub-component of an electronic interface. Below is the technical breakdown of the part based on standard industry specifications for this series. ### 1. Technical Specifications This component is generally part of the **TL1100 or TL3301 series** architecture, designed for PCB mounting. | Feature | Specification | | :--- | :--- | | **Component Type** | Tactile Switch / Push Button | | **Actuation Force** | 160gf to 250gf (Gram-force) | | **Contact Rating** | 50mA @ 12VDC | | **Mounting Type** | Through-Hole or SMD (Surface Mount) | | **Life Cycle** | 100,000 Cycles minimum | | **Travel** | 0.25mm ± 0.1mm | | **Operating Temp** | -20°C to +70°C | --- ### 2. Physical Characteristics The "0B1PK-R" designation defines the physical dimensions and the materials used for the button and the casing. * **Actuator Height:** Usually specifies a specific stem length (e.g., 5.0mm or 9.5mm) to fit through a device's plastic housing. * **Terminals:** Silver-plated brass or copper alloy for high conductivity and reliable soldering. * **Cap/Button Color:** The "PK" often denotes a **Black** (or specific color code) actuator made of high-temperature nylon. * **Packaging:** The "-R" suffix typically indicates **Tape and Reel** packaging, intended for automated Pick-and-Place assembly machines. --- ### 3. Common Applications These parts are used in "momentary" circuit applications where a user needs to provide a signal to a microcontroller. * **Consumer Electronics:** Reset buttons on routers, volume buttons on remote controls. * **Industrial:** Interface panels for machinery. * **Medical:** Handheld diagnostic devices. * **Computing:** Power switches on motherboards or peripherals. --- ### 4. Circuit Diagram (Basic Representation) Tactile switches are usually "Normally Open" (SPST - Single Pole Single Throw). ```text (Pin 1) ----/ ---- (Pin 2) Switch (Pin 3) ---------- (Pin 4) Note: Pins 1 & 3 and 2 & 4 are often internally connected. ``` ---