The **M2TT-76-R2/BN** is a specific variant of a sub-miniature toggle switch, often associated with high-reliability industrial and electronics applications. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications This component belongs to a class of professional-grade switches designed for PCB mounting or panel integration where space is limited. | Feature | Specification | | :--- | :--- | | **Switch Type** | Toggle Switch | | **Circuit Configuration** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-ON (2-position) | | **Mounting Type** | Through-hole (PCB) or Panel Mount | | **Actuator Style** | Standard Bat Lever | --- ### 2. Electrical Characteristics These parameters define the limits of the switch to ensure safety and longevity in a circuit. * **Current/Voltage Rating:** Typically rated for **6A @ 125VAC** or **3A @ 250VAC**. Low voltage DC ratings are usually around **4A @ 30VDC**. * **Contact Resistance:** Generally less than **10mΩ** to ensure minimal signal loss. * **Insulation Resistance:** Minimum of **1,000MΩ** at 500VDC. * **Dielectric Strength:** Capable of withstanding **1,000VAC** for 1 minute between terminals. --- ### 3. Material and Build (The "BN" Suffix) The suffix in these part numbers often refers to the finish or specific hardware included: * **Contacts:** Usually silver-plated or gold-over-silver. Silver is used for power, while gold is preferred for "dry" (low current) circuits to prevent oxidation. * **Housing:** High-temperature Diallyl Phthalate (DAP) or reinforced Nylon, meeting UL94V-0 flammability standards. * **Bushing (BN):** The "BN" often denotes a **threaded bushing** with a specific nut and washer hardware set, typically nickel-plated. --- ### 4. Terminal Layout (DPDT) The Double Pole Double Throw (DPDT) configuration means the switch controls two independent circuits simultaneously. ```text Terminals: [1] [4] <-- Circuit A / Circuit B [2] [5] <-- Common A / Common B [3] [6] <-- Circuit A / Circuit B ``` --- ### 5. Application Areas * **Telecommunications:** Signal routing and power toggling. * **Instrumentation:** Mode selection in testing equipment. * **Medical Equipment:** Reliable user-interface controls. * **Audio/Visual:** Input/Output switching.