The **B3C-R** is a specific electronic component within the **B3C Series**, primarily manufactured by **Omron**. It belongs to the category of tactile switches, specifically designed for reliability and specific mechanical feedback. --- ### 1. Component Overview The B3C-R is a **Tactile Switch** (also known as a momentary push-button). These are used to complete an electrical circuit only when the button is physically pressed. | Feature | Specification | | :--- | :--- | | **Type** | Tactile Switch (Momentary) | | **Series** | Omron B3C | | **Contact Form** | SPST-NO (Single Pole, Single Throw, Normally Open) | | **Termination Style** | Through-hole (PCB mounting) | | **Operating Force** | Typically ~1.27 N to 1.96 N (depending on sub-variant) | --- ### 2. Key Electronic Parts & Construction The B3C-R is comprised of several internal parts that ensure its function and longevity: 1. **Plunger/Actuator:** The top part that the user presses. In the "R" variant, this is often a rubberized or soft-touch material to provide a specific tactile feel compared to hard plastic. 2. **Contact Dome (Snap Action):** A metal disc inside that provides the "click" sound and tactile feedback. When pressed, it collapses to bridge the contacts. 3. **Terminals:** The conductive legs (usually 4 pins for stability) that are soldered into the PCB. 4. **Base/Housing:** A heat-resistant thermoplastic that holds the components and protects the internal mechanism from dust. --- ### 3. Electrical Characteristics These switches are designed for low-power signal switching, not for driving heavy loads. * **Switching Capacity:** Usually rated for **1 mA to 50 mA** at **5 VDC to 24 VDC**. * **Contact Resistance:** Typically less than 100 mΩ. * **Insulation Resistance:** 100 MΩ minimum at 250 VDC. * **Dielectric Strength:** 500 VAC for 1 minute. --- ### 4. Common Applications The B3C-R is found in devices requiring high-reliability user input: * **Consumer Electronics:** Audio equipment, appliances, and remote controls. * **Industrial Controls:** Panel buttons for PLCs or machinery. * **Computing:** Peripheral reset buttons or keyboard-style inputs. ---