The **TLM2BDR10FTD** is a precision surface-mount resistor manufactured by **TE Connectivity / Neohm**. It is specifically designed as a current sense resistor, characterized by its low resistance and high stability. --- ### 1. Key Technical Specifications The part number provides specific data regarding its physical and electrical properties: | Parameter | Value | | :--- | :--- | | **Resistance** | 0.10 Ohms (100 mΩ) | | **Power Rating** | 0.25 Watts (1/4 W) | | **Tolerance** | ±1% | | **Temperature Coefficient** | ±100 ppm/°C | | **Package / Case** | 1206 (Metric 3216) | | **Technology** | Metal Film | | **Operating Temp Range** | -55°C to +155°C | --- ### 2. Breakdown of the Part Number TE Connectivity uses a structured naming convention to define the component's attributes: * **TLM**: Series Name (Metal film low ohmic chip resistor). * **2B**: Size Code (Standard 1206 package). * **D**: Temperature Coefficient (±100 ppm/°C). * **R10**: Resistance Value (R denotes the decimal point; R10 = 0.10Ω). * **F**: Tolerance (F = ±1%). * **TD**: Packaging (Paper Tape & Reel). --- ### 3. Core Functions and Applications The TLM2B series is optimized for **Current Sensing**. Because the resistance is very low (0.1Ω), it allows current to pass through with minimal voltage drop, while allowing a controller to measure that voltage to determine current flow ($I = V/R$). #### Common Use Cases: * **Power Management:** Monitoring battery discharge in portable electronics. * **Motor Control:** Detecting overcurrent conditions to prevent motor burnout. * **DC-DC Converters:** Providing feedback for voltage regulation loops. * **Consumer Electronics:** Used in chargers and power adapters for safety monitoring. --- ### 4. Physical Construction The device uses a **Metal Film** element on a high-grade ceramic substrate. This construction provides: 1. **High Stability:** The resistance value does not drift significantly under thermal stress. 2. **Low Noise:** Metal film generates less electrical noise compared to thick film resistors. 3. **Sulfur Resistance:** Typically built to withstand harsh environmental conditions in industrial settings.