The **M2XR2-1Z1-R** is a specific part number belonging to the **M2XR series** of professional-grade electronic rotary switches, typically manufactured by companies like **Copal Electronics (Nidec)**. These components are designed for high-reliability signal switching in compact electronic devices. --- ## Technical Specifications The following table outlines the primary electronic and physical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Component Type** | Rotary Switch (Sub-miniature) | | **Circuit/Pole Configuration** | 1-Pole, 2-Position to 10-Position (varies by indexing) | | **Switching Logic** | Real Code or Complementary (Binary/Decimal) | | **Contact Rating** | 0.5VA Max / 28V DC Max | | **Contact Resistance** | 200 mΩ Max | | **Operating Temperature** | -25°C to +70°C | | **Terminal Style** | PC Pin (Through-hole) | --- ## Key Electronic Parts & Components ### 1. Contact Mechanism The internal contact points are usually **gold-plated**. Gold is used to prevent oxidation and ensure stable electrical conductivity over thousands of cycles, which is critical for low-voltage signal paths where even slight resistance can cause data errors. ### 2. Rotor and Stator * **Rotor:** The moving part that the user turns. It contains a conductive bridge. * **Stator:** The fixed base containing the circuit traces. As the rotor turns, it connects the common pin to specific output pins according to the encoding. ### 3. Housing (Dielectric) The body is constructed from high-performance engineering plastics (such as PPS or LCP). These materials provide high insulation resistance between terminals and can withstand the heat of wave soldering. ### 4. Sealing (O-Ring) The "R" in the suffix often denotes a **sealed construction**. An internal O-ring or epoxy seal protects the internal electronic contacts from flux, dust, and cleaning solvents during the PCB manufacturing process. --- ## Applications These switches are commonly found in the following electronic environments: * **Industrial Controls:** Setting device IDs or communication protocols. * **Medical Equipment:** Mode selection in handheld diagnostic tools. * **Telecommunications:** Configuring rack-mounted hardware parameters. * **Test & Measurement:** Adjusting gain or range on oscilloscopes and multimeters. ---