It appears you are referring to the **190890** series, which is a specific part number designation often associated with **Molex** connectors, specifically the **Krimptite** or **Avikrimp** series of electrical terminals. Below is a breakdown of the technical specifications, types, and applications for parts within this category. --- ### 1. Component Overview The 190890 series typically represents **Ring Terminals** or **Solderless Terminals**. These are used to connect a wire to a stud, screw, or bolt to create a secure electrical connection. | Feature | Specification (General 190890 series) | | :--- | :--- | | **Component Type** | Ring Tongue Terminal | | **Material** | Tin-Plated Copper | | **Insulation** | Often Uninsulated (Krimptite) or Nylon/PVC Insulated | | **Wire Size (AWG)** | Typically ranges from 10-12 AWG or 14-16 AWG | | **Stud Size** | Varies (e.g., #10, 1/4", 5/16") | | **Termination Interface** | Crimp or Compression | --- ### 2. Key Technical Attributes These parts are engineered for high-conductivity and durability in industrial environments. * **Plating:** The tin plating prevents corrosion and ensures low contact resistance over the life of the part. * **Seamless Barrel:** Many parts in this series feature a closed barrel design, which prevents the barrel from opening during the crimping process. * **Thermal Range:** Standard uninsulated versions can withstand higher temperatures (up to 149°C / 300°F) compared to plastic-insulated counterparts. --- ### 3. Common Variants Part numbers in this family often have suffixes that denote specific physical dimensions: 1. **19089-0001:** Often a standard uninsulated ring for 14-16 AWG. 2. **19089-0005:** May refer to a larger stud size (e.g., 3/8"). 3. **High-Temperature Versions:** Specific iterations use nickel plating for extreme heat environments. --- ### 4. Typical Applications These electronic parts are found in virtually every industry that requires power distribution: * **Automotive:** Grounding wires and battery connections. * **Industrial Machinery:** Control panels and motor wiring. * **Consumer Appliances:** Internal power routing for HVAC or ovens. * **Marine:** Tin-plated versions are preferred to resist salt-water oxidation. --- ### 5. Proper Installation To ensure the electrical integrity of a 190890 series part, follow these steps: ```text 1. Strip the wire insulation to the length of the terminal barrel. 2. Insert the bare wire into the barrel until it is flush with the ring. 3. Use a calibrated crimping tool (e.g., Molex Hand Crimp Tool). 4. Perform a "pull test" to ensure the mechanical connection is solid. ```