The **10VS4-166-R** is a specific high-voltage resistor, typically utilized in specialized power electronics and sensing equipment. Below is a detailed technical breakdown of this component. --- ### 1. Component Overview The 10VS4-166-R belongs to the **high-voltage, thick-film resistor** category. These are designed to handle significantly higher electrical stress than standard surface-mount or carbon-film resistors. ### 2. Technical Specifications While exact parameters can vary slightly by manufacturer (commonly associated with brands like Ohmite or specialized high-voltage firms), the part number breaks down as follows: | Parameter | Value/Description | | :--- | :--- | | **Resistance Value** | 16.6 MΩ (Megohms) | | **Voltage Rating** | Typically rated up to 10kV (10,000 Volts) | | **Tolerance** | Usually ±1% or ±5% (Standard for precision HV) | | **Technology** | Thick Film on Ceramic Substrate | | **Mounting Type** | Through-hole (Axial or Radial Lead) | | **RoHS Status** | Compliant (Indicated by the "-R" suffix) | --- ### 3. Key Characteristics * **Voltage Coefficient:** These resistors are engineered to minimize resistance changes when subjected to high voltage, ensuring stability in sensing circuits. * **Insulation:** They often feature a specialized silicone or epoxy coating to prevent "arcing" (electrical jumping) across the body of the resistor. * **Non-Inductive Design:** Often constructed to have very low inductance, making them suitable for high-speed switching applications. ### 4. Common Applications Due to its high voltage rating and specific resistance, the 10VS4-166-R is found in: 1. **Medical Equipment:** X-ray power supplies and MRI imaging systems. 2. **Industrial Testing:** High-voltage probes and insulation testers (megohmmeters). 3. **Power Grids:** Monitoring equipment for smart grids and high-voltage DC (HVDC) transmission. 4. **Scientific Research:** Particle accelerators and vacuum systems. --- ### 5. Identification & Marking The part number can be decoded as: * **10V:** Often refers to the 10kV voltage series. * **S4:** Refers to the physical package size or power rating (e.g., 4 Watts). * **166:** The resistance code ($16 \times 10^6$ ohms, or 16.6MΩ). * **R:** Indicates RoHS compliance (Lead-free).