The **RG2-407N-R15** is a high-precision, thick-film chip resistor array typically manufactured by **Susumu Co., Ltd.** (or similar precision component specialists). These parts are designed to save PCB space by integrating multiple resistors into a single package while maintaining high reliability and tight tolerances. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics of the RG2-407N-R15: | Feature | Specification | | :--- | :--- | | **Resistor Type** | Metal Thin Film / Thick Film Chip Resistor Array | | **Resistance Value** | 0.15 $\Omega$ (indicated by "R15") | | **Tolerance** | $\pm$ 0.5% or $\pm$ 1% (Series dependent) | | **Power Rating** | Approx. 0.063W (1/16W) per element | | **Operating Temp Range** | -55°C to +125°C | | **Circuit Configuration** | 4-isolated resistors (4-pin or 8-pin package) | | **Termination Style** | Convex or Concave terminals (SMD) | --- ## 2. Part Number Breakdown Understanding the nomenclature helps in identifying its specific properties: * **RG2**: The series designation (Thin film, high precision, multi-resistor array). * **407**: Indicates the physical size and the number of resistors (usually 4 resistors in a 1206 or similar footprint). * **N**: Temperature Coefficient (TCR) or specific designator for internal wiring. * **R15**: The resistance value. "R" acts as the decimal point ($0.15$ Ohms). --- ## 3. Key Electronic Features ### A. High Integration The RG2 series allows for a high density of components. By housing four resistors in one package, it reduces the "pick and place" time during manufacturing and saves roughly 30-50% of PCB real estate compared to four individual 0402 or 0603 resistors. ### B. Thermal Tracking Because the resistors are on the same ceramic substrate, they experience nearly identical thermal conditions. This makes them excellent for: * Voltage dividers. * Differential signal termination. * Feedback loops where ratio stability is more important than absolute value stability. ### C. Low Resistance Applications At **0.15 $\Omega$**, this specific part is often used for: * **Current Sensing:** Detecting small voltage drops to measure current flow. * **Power Management:** Acting as a shunt resistor in battery-operated devices. * **LED Driver circuits:** Balancing current across multiple LED strings. --- ## 4. Common Applications * **Automotive Electronics:** Control units requiring high reliability. * **Industrial Automation:** Sensor interfaces and signal conditioning. * **Telecommunications:** High-speed data line termination. * **Medical Equipment:** High-precision instrumentation.