The **RG1-211N-R15** is a high-precision, thin-film chip resistor manufactured by **Susumu**. It belongs to the **RG series**, which is widely recognized in the electronics industry for its high reliability, low noise, and extreme stability under harsh environmental conditions. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of the RG1-211N-R15: | Parameter | Specification | Notes | | :--- | :--- | :--- | | **Resistance Value** | 210 $\Omega$ (indicated by '211') | $21 \times 10^1$ ohms | | **Tolerance** | $\pm 0.05\%$ (Code: N) | Extremely high precision | | **Power Rating** | 0.063W (1/16 W) | Standard for 0402 package | | **Package Size** | 0402 (Metric 1005) | 1.0mm x 0.5mm | | **Temp. Coefficient (TCR)** | $\pm 10$ ppm/°C (Code: R) | Very low drift over temperature | | **Max Operating Voltage** | 25V | Standard limit for this size | | **Operating Temp Range** | -55°C to +155°C | Automotive/Industrial grade | --- ### 2. Breakdown of the Part Number Understanding the nomenclature helps in identifying the specific performance tier of the component: * **RG**: Series Name (Thin film, high reliability, inorganic passivation). * **1005 (1)**: The physical size (1.0mm x 0.5mm, commonly known as 0402). * **211**: Resistance code ($21 \times 10^1 = 210 \Omega$). * **N**: Tolerance code ($\pm 0.05\%$). * **R**: Temperature Coefficient of Resistance (TCR) code ($\pm 10$ ppm/°C). * **15**: Packaging code (typically refers to 15,000 piece reels or specific taping). --- ### 3. Core Technologies and Benefits #### Thin Film Construction Unlike standard "Thick Film" resistors (which use a paste), the RG series uses a sputtered metal film on a ceramic substrate. This results in: * **Lower Noise:** Ideal for sensitive analog circuits. * **Long-term Stability:** Resistance change is minimal over thousands of hours of use ($<0.25\%$). #### Inorganic Passivation Susumu uses a unique glass/inorganic coating that protects the resistive element from moisture and sulfur. This prevents "Silver Sulfidation," a common cause of failure in standard resistors in polluted or humid environments. --- ### 4. Typical Applications Due to its high precision and low drift, the RG1-211N-R15 is commonly used in: * **Medical Electronics:** Instrumentation requiring exact signal processing. * **Automotive ECU:** Sensors and control units that experience high temperature fluctuations. * **Test and Measurement:** Multimeters and oscilloscopes where accuracy is critical. * **Industrial Automation:** High-end PLC analog input modules.