The **M2AMS2-2B-R** is a high-performance, miniature slide switch manufactured by **C&K Components** (now part of Littelfuse). It belongs to the **M2 series**, which is widely recognized for its reliability in telecommunications and instrumentation. --- ### 1. General Specifications The electronic and physical characteristics of the M2AMS2-2B-R are detailed in the table below: | Feature | Specification | | :--- | :--- | | **Switch Function** | DPDT (Double Pole Double Throw) | | **Switch Operation** | On-On | | **Current Rating** | 0.4 VA (Max) @ 20V AC or DC | | **Contact Resistance** | 20 mΩ Max (Initial) | | **Insulation Resistance** | 1,000 MΩ Min | | **Dielectric Strength** | 1,000 Vrms @ sea level | | **Operating Temperature** | -30°C to +85°C | | **Mounting Type** | Through-hole, Right Angle | --- ### 2. Key Electronic Components & Construction The "R" in the part number signifies its compliance with environmental and specific plating standards. Here are the core internal components: * **Contacts & Terminals:** Typically gold-plated over nickel. Gold is used because this is a **logic-level switch** (0.4 VA). Gold prevents oxidation, ensuring high signal integrity in low-power circuits. * **Housing/Base:** Glass-filled nylon 6/6, flame retardant (UL 94V-0). This provides high thermal stability during soldering. * **Actuator:** Standard height slider made of thermoplastic polyester (PBT). * **Sealing:** The "2B" designation often refers to an epoxy terminal seal. This prevents flux, solder, or cleaning contaminants from entering the internal mechanism during PCB assembly. --- ### 3. Terminal Configuration The **Right Angle** orientation means the actuator moves parallel to the PCB, but the terminals are bent at a 90-degree angle to mount through the board vertically. ```text [ Actuator ] | | _______|____|_______ | | | Body | |____________________| | | | <-- Terminals bent 90° L____L____L <-- PC Board Surface ``` --- ### 4. Typical Applications Because of its low-power rating and DPDT configuration, this part is commonly found in: 1. **Handheld Devices:** For power on/off or mode selection. 2. **Medical Equipment:** Used in diagnostic tools where space is limited. 3. **Telecommunications:** Used as a configuration switch on internal circuit boards. 4. **Test & Measurement:** Logic switching for signal routing. ---