The part number **M2RTS-R-BB-R/CE** refers to a high-quality, industrial-grade **Rotary Switch** typically manufactured by companies like **Otax** or similar high-end electromechanical component providers. This specific series is often used in telecommunications, medical equipment, and industrial controls. --- ### 1. Breakdown of the Part Number While naming conventions can vary slightly by manufacturer, here is the standard breakdown for this specific type of component: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **M2** | Series Type | Miniature/Sub-miniature series rotary switch. | | **RTS** | Switch Type | **R**otary **T**erminal **S**witch (often DIP-compatible). | | **R** | Terminal Type | Right-angle terminal configuration (Side-actuated). | | **BB** | Contact Material | Usually indicates **Gold over Nickel** or **Gold over Brass** for high reliability. | | **R/CE** | Compliance/Packaging | Refers to **CE Marking** (European Conformity) and **RoHS** compliance. | --- ### 2. Technical Specifications These components are designed for low-current signal switching and logic-level applications. * **Actuation Type:** Rotary (usually operated by a small flathead screwdriver or finger knob). * **Mounting Type:** Through-hole (PCB) with a right-angle orientation. * **Positions:** Typically 2 to 12 positions (depending on internal detent settings). * **Contact Rating:** Usually rated for **100mA at 5V DC** (switching) and **250mA at 25V DC** (non-switching). * **Insulation Resistance:** > 1,000 MΩ at 100V DC. * **Life Cycle:** Often rated for 10,000 to 20,000 steps minimum. --- ### 3. Key Electronic Features * **Gold-Plated Contacts:** The "BB" designation ensures low contact resistance and prevents oxidation, making it ideal for circuits where the switch is not moved frequently but must remain conductive. * **Wiping Action:** The internal mechanism usually features a "self-cleaning" wiping action that clears dust or oxidation from the contacts during rotation. * **Sealed Construction:** These switches are often wash-tight, allowing them to withstand wave soldering and aqueous cleaning processes without internal contamination. --- ### 4. Typical Applications * **Address Setting:** Used as a DIP switch alternative for setting device IDs in networked hardware. * **Mode Selection:** Selecting operational modes (e.g., Test vs. Run) on a PCB. * **Configuration:** Adjusting gain or frequency settings in analog circuits.