Based on your query, the **MHO+56TAG-R** refers to a specific series of **Metal Oxide Varistors (MOVs)**, typically manufactured by companies like *Thinking Electronic Industrial (TKS)*. These are protective components used to safeguard electronics from voltage surges. Below is a breakdown of the electronic specifications and characteristics for this component. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its physical and electrical properties. | Feature | Description | | :--- | :--- | | **Component Type** | Metal Oxide Varistor (MOV) | | **Material** | Zinc Oxide (ZnO) based ceramic | | **Configuration** | Radial leaded (Disc shape) | | **Primary Function** | Over-voltage protection / Surge suppression | --- ### 2. Breakdown of the Part Number While specific manufacturer datasheets may vary slightly, the code "56TAG-R" generally breaks down as follows: * **MHO/TVR:** Series designation (High Surge / Thermal protection). * **56:** Often refers to the **Varistor Voltage** ($V_{1mA}$). In this context, it usually indicates a nominal voltage of **56V** (clamping starts at this point). * **T:** May indicate "Thermal" protection or a specific lead style (Taped/Straight). * **A/G:** Tolerance or energy rating codes (typically ±10% tolerance). * **-R:** Indicates compliance with **RoHS** (Restriction of Hazardous Substances) standards. --- ### 3. Electrical Characteristics These parts are designed to act as a "clamping" device. Under normal conditions, they have high resistance; during a surge, their resistance drops instantly to shunt the current. | Parameter | Typical Value (MHO-56 Series) | | :--- | :--- | | **Varistor Voltage ($V_{1mA}$)** | 56V (Range: 50V - 62V) | | **Max. Allowable AC Voltage** | ~35V RMS | | **Max. Allowable DC Voltage** | ~45V DC | | **Max. Clamping Voltage** | ~110V (at specific peak current) | | **Withstanding Surge Current** | Varies by disc size (e.g., 500A to 2000A) | | **Operating Temperature** | -40°C to +85°C | --- ### 4. Typical Applications The MHO+56TAG-R is commonly found in low-voltage circuits to protect against transients caused by lightning, inductive load switching, or electrostatic discharge (ESD). * **Power Supplies:** Input/Output protection for AC/DC adapters. * **Automotive:** Protecting 12V/24V systems from load dump transients. * **Telecommunications:** Protecting line interfaces. * **Industrial:** Protection for sensors and PLC inputs. --- ### 5. Installation Circuit Example Varistors are always placed in **parallel** with the load they are protecting. ```mermaid graph LR Input_Positive --- Fuse Fuse --- A(MOV MHO-56) A --- Load Input_Negative --- A Input_Negative --- Load ``` *Note: A fuse is always recommended in series before the MOV to prevent fire in case the MOV fails in a short-circuit state.*