The **M2MS-1-R/X1** is a specialized electronic component, typically categorized as a **Micro-Miniature Magnetic Reed Switch** or a specific connector assembly depending on the manufacturer (most commonly associated with high-reliability reed sensing technology). Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The "M2MS" series is generally designed for high-density applications where space is limited but high reliability is required. | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Magnetic Reed Switch / Sensor | | **Contact Form** | Form A (Normally Open) | | **Switching Voltage** | Max 100 - 200V DC (application dependent) | | **Switching Current** | Max 0.25A - 0.5A | | **Contact Rating** | 10W / 10VA | | **Lead Configuration** | Surface Mount (SMD) or Axial (depending on "R" suffix) | --- ### 2. Part Number Breakdown While manufacturer codes vary slightly, the nomenclature generally follows this logic: * **M2MS**: Series designation (Micro-Miniature Sensor). * **-1**: Sensitivity range or size identifier (usually indicates a specific AT/Ampere-Turn range). * **-R**: Often indicates **RoHS Compliant** or **Tape & Reel** packaging for automated assembly. * **X1**: Specific variation code (may refer to lead length, specialized plating, or custom sensitivity tolerances). --- ### 3. Key Electronic Characteristics #### A. Magnetic Sensitivity (AT Range) The device operates based on a specific **Ampere-Turn (AT)** pull-in range. This determines how strong a magnetic field is required to close the contact. The "-1" usually denotes the most sensitive tier. #### B. Hermetic Sealing The internal contacts are sealed in a glass envelope with an inert gas. * **Benefit:** This prevents oxidation and allows the part to be used in hazardous or corrosive environments without affecting electrical performance. #### C. Contact Resistance These parts feature very low initial contact resistance (typically **<150 mΩ**), ensuring minimal signal loss in low-voltage sensing circuits. --- ### 4. Typical Applications Due to its small footprint and passive operation, it is frequently used in: 1. **Mobile Devices:** Detecting flip-cover positions or screen orientation. 2. **Medical Equipment:** Non-contact switching in sterile environments. 3. **Industrial Security:** Window/door sensors and tamper-evident switches. 4. **Automotive:** Liquid level sensing and seatbelt buckle detection. --- ### 5. Installation Precautions ```cpp // Cautionary note for PCB Design: // 1. Avoid mechanical stress on the glass-to-metal seal. // 2. Keep away from high-current inductors to prevent EMI interference. // 3. Ensure the magnet alignment matches the long axis of the switch. ```