Based on electronic component nomenclature, the part number **804-R010-230** typically refers to a high-precision, low-resistance current sensing resistor (shunt resistor). These are commonly used for power management and current monitoring. --- ### 1. Component Specifications Below is a breakdown of the typical technical parameters for a component with this numbering scheme: | Feature | Specification | Description | | :--- | :--- | :--- | | **Part Number** | 804-R010-230 | Industry Standard/Manufacturer Specific | | **Resistance Value** | 0.010 $\Omega$ (10 m$\Omega$) | Indicated by the "R010" segment | | **Tolerance** | $\pm$1% or $\pm$5% | Depends on the specific series (usually J or F) | | **Voltage Rating** | 230V | Likely indicates the maximum operating voltage | | **Type** | Current Sense Resistor | Metal strip or thick film technology | | **Mounting** | Surface Mount (SMD) | Designed for PCB placement | --- ### 2. Breakdown of the Part Number The alphanumeric code follows a standard industry convention: * **804**: Often represents the physical size or series (e.g., a specific footprint like 0805 or a custom package size). * **R010**: This is the **Resistance Value**. The "R" acts as a decimal point. $R010 = 0.010$ Ohms (10 milliohms). * **230**: Typically refers to the **Voltage Rating** (230 Volts) or a specific packaging code for reels. --- ### 3. Common Applications Because this is a low-resistance part, it is used to measure current flow by measuring the voltage drop across the resistor ($V = I \times R$). 1. **Battery Management Systems (BMS):** Monitoring charge and discharge cycles. 2. **Motor Controllers:** Detecting over-current conditions to protect the motor. 3. **Power Supplies:** Regulating the output current of DC-DC converters. 4. **Inverters:** Managing power flow in renewable energy systems. --- ### 4. Technical Precautions When replacing or designing with this part, consider the following: * **Power Dissipation ($P = I^2 \times R$):** Ensure the wattage rating of the resistor exceeds the heat generated by the current flowing through it. * **Temperature Coefficient (TCR):** Low resistance values can drift with heat; look for components with low PPM/°C if high accuracy is required. * **Kelvin Connection:** For 10m$\Omega$ resistors, using a 4-terminal (Kelvin) pad layout is recommended to eliminate lead resistance errors.