The **M2AS1-4312-R/N** is a specific part number belonging to the **M2AS series** of industrial-grade rotary switches, typically manufactured by companies like **NKK Switches** or similar precision component vendors. These are often used in control panels, medical equipment, and telecommunications. --- ### 1. Technical Specifications Overview The part number is an alphanumeric code where each segment represents a specific physical or electrical characteristic. | Feature | Description | | :--- | :--- | | **Switch Type** | Rotary Switch (Subminiature) | | **Mounting Type** | PC Board (Through-hole) / Vertical | | **Number of Positions** | Typically 2 to 4 positions (adjustable or fixed) | | **Contact Material** | Gold or Silver (R/N usually denotes contact plating/rating) | | **Actuator Style** | Screwdriver slot or Shaft-actuated | --- ### 2. Detailed Electronic Characteristics #### A. Contact Ratings These switches are designed for logic-level signals rather than high-power switching. * **Maximum Voltage:** Typically 28V DC. * **Maximum Current:** 0.1A (100mA) to 0.4VA maximum. * **Contact Resistance:** Low initial resistance (often <50mΩ) to ensure signal integrity in sensitive circuits. #### B. Terminal Configuration The "4312" segment often refers to the internal wiring and pole configuration: * **Poles:** Likely a Single Pole (1P) or Double Pole (2P) configuration. * **Pitch:** Standard 2.54mm (0.1") spacing for easy integration into breadboards or standard PCBs. #### C. Environmental Durability * **Sealing:** The "/N" or suffixes often indicate a "Process Sealed" design. This means the component can withstand automated wave soldering and cleaning processes (washable) without flux entering the internal contacts. * **Temperature Range:** Usually rated for -25°C to +70°C. --- ### 3. Application Use-Cases Because of its small footprint and reliability, the M2AS1-4312-R/N is commonly found in: 1. **DIP Switch Replacement:** Used for setting device IDs or modes where a rotary interface is more intuitive than linear sliders. 2. **Audio Equipment:** Gain or channel selection in compact pre-amps. 3. **Industrial Controls:** Setting parameters on a PLC (Programmable Logic Controller) module. --- ### 4. Mounting Diagram (Simplified) ```text [ Actuator ] _______|_______ | | | Switch | | Body | |_______________| | | | | <-- Terminals (Pins) ----------------- <-- PCB Surface ```