Based on standard electronic component classification, the part number **1-055-R** typically refers to a **High-Current Power Choke (Inductor)** or a specific **Current Sensing Resistor**, depending on the manufacturer (most commonly associated with brands like RCD Components or similar industrial suppliers). Below is a detailed breakdown of the specifications and characteristics associated with this part series. --- ## 1. Component Overview The "1-055-R" designation usually identifies a precision component designed for power management. The "R" suffix often indicates **RoHS Compliance** (Lead-free). ### Key Technical Specifications | Feature | Typical Value/Description | | :--- | :--- | | **Component Type** | Power Inductor or Current Sense Resistor | | **Resistance/Inductance** | Specified by the "055" code (often 0.055 $\Omega$ or 55µH) | | **Tolerance** | Usually $\pm$1%, $\pm$5%, or $\pm$10% | | **Material** | Metal strip or Ferrite core | | **Mounting Type** | Through-Hole or Surface Mount (SMD) | --- ## 2. Functional Characteristics ### A. Power Handling These parts are designed to handle significant current without overheating. In a resistor context, it is used for **Current Sensing**, allowing a circuit to monitor power usage by measuring the voltage drop across the component. ### B. Thermal Stability * **Temperature Coefficient:** Usually very low, ensuring the resistance/inductance stays stable even as the device heats up. * **Coating:** Often encapsulated in flameproof silicone or epoxy to protect against environmental moisture. --- ## 3. Common Applications Components with this part numbering are found in heavy-duty industrial and consumer electronics: 1. **Switching Power Supplies (SMPS):** Used for filtering noise or storing energy. 2. **Motor Controllers:** Monitoring the current draw of electric motors to prevent stalls or surges. 3. **Battery Management Systems (BMS):** Balancing cells and tracking discharge rates. 4. **DC-DC Converters:** Voltage regulation in telecommunications equipment. --- ## 4. Identifying the Manufacturer Because "1-055-R" is a relatively generic format, it is important to check the physical branding: * **RCD Components:** Often uses this format for their inductive and resistive lines. * **Generic/OEM:** Some automotive manufacturers use this prefix for specific wire harness connectors or sensors. ---