The term **4006-R** typically refers to a high-precision, high-voltage resistor, often part of the **Caddock Electronics Type MG** or **US Micro-Products** series. These components are engineered for stability and reliability in demanding environments. --- ### 1. Key Technical Specifications The "4006" designation often points to the specific physical size and resistance range of the component. | Parameter | Typical Value / Range | | :--- | :--- | | **Component Type** | High-Voltage Precision Resistor | | **Resistance Range** | 200 Ω to 2000 MΩ (Model dependent) | | **Power Rating** | 0.75W to 2.0W (Ambient dependent) | | **Voltage Rating** | Up to 4,000 Volts (Peak) | | **Tolerance** | ±0.1% to ±1.0% | | **Temperature Coefficient** | 80 ppm/°C | --- ### 2. Core Features The 4006-R is defined by its ability to maintain accuracy under electrical stress. * **High Voltage Stability:** Designed to resist "voltage coefficient" effects, meaning the resistance stays steady even as high voltage is applied. * **Non-Inductive Design:** Many variations use a serpentine pattern to minimize inductance, making them suitable for high-speed switching circuits. * **Environmental Coating:** Usually encased in a high-temperature silicone or epoxy coating to protect against moisture and arcing. * **RoHS Compliant:** The "-R" suffix almost always denotes **RoHS compliance**, meaning the part is manufactured without lead or other hazardous substances. --- ### 3. Common Applications Due to its precision and high voltage handling, you will find these parts in: 1. **Medical Equipment:** X-ray power supplies and MRI imaging systems. 2. **Laboratory Instruments:** High-precision multimeters and calibration standards. 3. **Industrial Controls:** Motor drives and power distribution monitoring. 4. **Aerospace:** Radar systems and satellite communication power modules. --- ### 4. Comparison with Standard Resistors Standard resistors (like the 0805 or 1206 SMD types) fail quickly when exposed to kilovolt levels. The 4006-R differs in the following ways: ```cpp // Pseudocode Logic for Component Selection if (Voltage > 1000V && Required_Precision < 1%) { Use_Part("4006-R High Voltage Series"); } else { Use_Part("Standard Thick Film Resistor"); } ```