The **ALCT-122-R** is a specific electronic component typically identified as a **Miniature Toggle Switch** or a part of a specialized connector/sensor series, often associated with brands like Alcoswitch (TE Connectivity). Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ## 1. Component Overview The ALCT series generally refers to high-reliability switching components designed for PCB (Printed Circuit Board) mounting. The "-R" suffix usually denotes compliance with **RoHS** (Restriction of Hazardous Substances) standards. | Feature | Specification | | :--- | :--- | | **Component Type** | Toggle Switch / PC Mount | | **Circuit Configuration** | SPDT (Single Pole Double Throw) | | **Switch Function** | On-On (or On-Off-On depending on sub-variant) | | **Contact Rating** | Typically 0.4VA @ 20V AC/DC (Logic Level) | | **Mounting Type** | Through-Hole (Right Angle or Vertical) | | **Terminal Material** | Gold-plated (standard for low-power logic) | --- ## 2. Key Electronic Parts & Materials The internal construction of the ALCT-122-R involves several critical materials to ensure electrical conductivity and mechanical longevity: ### A. Contact Mechanism * **Wiping Contacts:** Uses a "wiping" action to clear surface oxidation each time the switch is toggled, ensuring a clean electrical path. * **Gold Plating:** Since these are often used in low-voltage signal circuits, gold is used to prevent corrosion and provide low contact resistance. ### B. Housing & Insulation * **Case Material:** High-temperature Thermoplastic (UL94V-0 rated). This allows the part to withstand wave soldering temperatures. * **Actuator:** Typically brass with chrome plating or high-strength nylon. ### C. Terminals * **PC Terminals:** Designed for standard 0.1-inch (2.54mm) hole spacing. * **Epoxy Seal:** The base is usually sealed with epoxy to prevent solder flux from entering the internal contact area during manufacturing. --- ## 3. Technical Parameters When integrating this part into a circuit, the following electrical limits must be observed: | Parameter | Value | | :--- | :--- | | **Insulation Resistance** | 1,000 MΩ minimum | | **Dielectric Strength** | 1,000 V RMS @ sea level | | **Operating Temperature** | -20°C to +85°C | | **Mechanical Life** | ~50,000 to 100,000 cycles | | **Contact Resistance** | < 20 mΩ initial | --- ## 4. Typical Applications Due to its small footprint and logic-level rating, the ALCT-122-R is found in: 1. **Handheld Instruments:** Power or mode selection. 2. **Telecommunications:** Signal routing on backplanes. 3. **Medical Equipment:** User interface controls. 4. **Embedded Systems:** Reset switches or configuration toggles.