The **RG1-306S-R15** is a high-precision, thin-film chip resistor manufactured by **Susumu**. It belongs to the RG series, which is industry-renowned for its exceptional reliability, low noise, and stability under harsh environmental conditions. ### 1. Technical Specifications The part number follows a specific coding structure that defines its electronic characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | RG | High-reliability metal film chip resistor | | **Case Size** | 1608 (Metric) / 0603 (Inch) | Dimensions: 1.6mm x 0.8mm | | **Resistance Value** | 30.6 $\Omega$ | "306" denotes significant digits; "S" is the multiplier | | **Tolerance** | ±0.1% (B) | High precision for signal accuracy | | **Power Rating** | 0.1W (1/10W) | Standard power dissipation for 0603 size | | **Temp. Coefficient (TCR)** | ±25 ppm/°C | Minimal resistance drift during temperature changes | --- ### 2. Key Internal Features The "RG" series is distinct from standard thick-film resistors due to its construction: * **Thin-Film Technology:** Uses a metal film deposited on a ceramic substrate, allowing for much tighter tolerances and lower noise than thick-film (carbon-based) alternatives. * **Inorganic Passivation:** The resistor element is protected by a glass-based inorganic layer, making it highly resistant to moisture, sulfur, and heat. * **Anti-Sulfur Construction:** Designed to prevent "sulfuration" (where silver in the terminals reacts with sulfur in the air), which is a common cause of failure in industrial electronics. --- ### 3. Common Applications Due to its high precision and stability, this component is typically found in: 1. **Medical Equipment:** Precise signal conditioning for sensors. 2. **Automotive Electronics:** Engine control units (ECU) and safety systems where reliability is critical. 3. **Industrial Automation:** High-accuracy measurement tools and PLC modules. 4. **Telecommunications:** Base stations and high-speed networking hardware where low noise is required. --- ### 4. Part Number Breakdown (Naming Convention) `RG` `1608` `P` - `306` `S` - `B` - `T5` (Example Structure) * **RG:** Series Name. * **1608:** Physical size (1.6mm x 0.8mm). * **306:** Resistance value (30.6). * **S:** Multiplier/Decimal placement. * **B/D:** Tolerance code. * **R15:** Often refers to specific packaging (e.g., 15k piece reel) or a specialized TCR variant.