Based on technical specifications for industrial electronic components, the **ANR-133-R** typically refers to a high-precision **Thin Film Chip Resistor** or a specific **Current Sense Resistor** series (often associated with brands like Viking Tech or similar industrial suppliers). Below is a detailed breakdown of its electronic characteristics and construction. --- ### 1. Key Technical Specifications These components are designed for stability and precision in electronic circuits. | Parameter | Typical Value / Range | Description | | :--- | :--- | :--- | | **Resistance Value** | 133 $\Omega$ (indicated by "133") | The nominal resistance of the component. | | **Tolerance** | ±0.1% to ±1% | The allowable deviation from the nominal resistance. | | **Temperature Coefficient (TCR)** | ±25 to ±50 ppm/°C | How much resistance changes with temperature. | | **Package / Case Size** | 0603, 0805, or 1206 | Surface Mount Device (SMD) dimensions. | | **Power Rating** | 1/10W to 1/4W | Maximum power dissipation before damage. | | **RoHS Status** | Compliant ("-R") | Lead-free and environmentally friendly. | --- ### 2. Physical Construction The "ANR" series generally utilizes **Thin Film technology**, which provides superior performance over standard thick film resistors. 1. **Substrate:** High-purity Alumina ($Al_2O_3$) ceramic base for heat dissipation. 2. **Resistive Layer:** A sputtered thin film of Nichrome (NiCr) or similar metal alloy. 3. **Protective Coating:** An epoxy or glass overcoat to protect against moisture and mechanical stress. 4. **Terminations:** Multi-layer end-terminations (usually Silver/Nickel/Tin) for excellent solderability. --- ### 3. Part Number Decoding The suffix and prefix provide specific information about the part's lifecycle and build: * **ANR:** The Series Identifier (Precision Thin Film). * **133:** The Resistance Code ($13 \times 10^1 = 130 \Omega$ or simply $133 \Omega$ depending on the manufacturer's 3-digit vs 4-digit system). * **-R:** Indicates **RoHS Compliance** (Restriction of Hazardous Substances) or **Taping/Reel** packaging. --- ### 4. Typical Applications Due to its high precision and low noise characteristics, the ANR-133-R is used in: * **Medical Equipment:** Monitoring devices requiring stable signals. * **Measurement Instruments:** Multi-meters and sensors. * **Communication Base Stations:** High-frequency signal processing. * **Automotive Electronics:** Control units where thermal stability is critical. ---