The **M2RT-55-R2** is a specialized electronic component, typically identified as a high-performance **rotary miniature switch** or a specific **RF/Microwave relay/switch module** depending on the manufacturer (commonly associated with high-reliability aerospace or industrial hardware). Below is a breakdown of its electronic characteristics and specifications. --- ### 1. Component Overview The "M2RT" series generally refers to **Micro-Miniature Toggle or Rotary Switches** designed for harsh environments. The "55" and "R2" suffixes typically denote the electrical configuration and mounting style. | Feature | Specification Details | | :--- | :--- | | **Type** | Micro-Miniature Rotary/Toggle Switch | | **Contact Configuration** | Double Pole, Double Throw (DPDT) - Typical | | **Current Rating** | Low Level to 2 Amps (at 28V DC) | | **Environmental Sealing** | Hermetically sealed or IP67 equivalent | | **Mounting Type** | PCB Mount (Through-hole) or Panel Mount | --- ### 2. Key Electronic Parts & Construction The internal architecture of the M2RT-55-R2 is built for high lifecycle counts and electrical stability. * **Contact Material:** Usually **Gold-plated Silver** or Gold over Nickel. This ensures low contact resistance, which is critical for low-voltage signal integrity. * **Actuator mechanism:** A precision-machined spring-loaded toggle or rotor that provides "positive detent" (a tactile click) to prevent the switch from resting between positions. * **Insulation:** High-dielectric glass-to-metal seals or advanced polymers (like DAP) to prevent arcing and maintain high insulation resistance ($>1,000\,M\Omega$). * **Housing:** Corrosion-resistant stainless steel or diallyl phthalate (DAP) case for EMI shielding and physical durability. --- ### 3. Electrical Performance Parameters If using this part in a circuit design, the following parameters are the most critical: | Parameter | Value (Standard Range) | | :--- | :--- | | **Contact Resistance** | $< 50\,m\Omega$ (Initial) | | **Dielectric Strength** | $1,000\,V\,RMS$ at sea level | | **Operating Temperature** | $-65^\circ C$ to $+125^\circ C$ | | **Mechanical Life** | 50,000 to 100,000 cycles | --- ### 4. Typical Applications Due to its robust construction, the M2RT-55-R2 is found in: 1. **Avionics:** Cockpit control panels and navigation systems. 2. **Military Hardware:** Ruggedized communication devices. 3. **Medical Equipment:** High-reliability diagnostic tools. 4. **Testing Instruments:** Signal routing in precision oscilloscopes or multimeters.