The **RG3-209N-R15** is a high-precision, thin-film chip resistor array manufactured by **Susumu**. It belongs to the **RG series**, which is renowned for its excellent reliability, low noise, and high stability under harsh environmental conditions. --- ### 1. General Specifications This component is designed for applications requiring precise resistance ratios and tight tolerances. | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Susumu | | **Series** | RG (Thin Film) | | **Configuration** | 2-resistor network (Array) | | **Resistance Value** | 20kΩ (standard for 209N series) | | **Tolerance** | ±0.05% to ±0.1% (typical for R15 suffix) | | **Temperature Coefficient (TCR)** | ±5 ppm/°C to ±25 ppm/°C | | **Package Style** | 0603 or 1206 (standardized SMD) | --- ### 2. Key Electronic Features #### A. Thin Film Technology Unlike standard thick film resistors, the RG series uses a thin metal film deposited on a ceramic substrate. This results in: * **Low Noise:** Extremely low current noise, making it ideal for high-end audio and precision instrumentation. * **High Stability:** Minimal resistance drift over the component's lifespan. #### B. Ratio Matching The "Array" nature of the RG3-209N means that the two resistors inside the package are manufactured simultaneously on the same substrate. This ensures: * **Excellent Tracking:** Both resistors will react to temperature changes in exactly the same way, maintaining a constant ratio. * **Precision Voltage Division:** Crucial for operational amplifier circuits. #### C. Reliability The part features inorganic passivation, making it highly resistant to moisture and sulfurization, which often cause failure in standard resistors. --- ### 3. Common Applications Due to its precision and stability, the RG3-209N-R15 is typically found in: 1. **Industrial Instrumentation:** Precise measurement equipment. 2. **Medical Electronics:** Diagnostic tools requiring high signal integrity. 3. **Automotive ECU:** Sensors and control units that operate in varying temperatures. 4. **Audio Gear:** High-fidelity pre-amplifiers and DACs. --- ### 4. Part Number Breakdown (Typical) * **RG:** Series Name (Thin Film) * **3:** Size/Power Rating identifier * **209N:** Specific resistance code and internal schematic * **R15:** Tolerance and packaging indicator