The **TLM2HDR10FTE** is a high-precision, low-resistance current sense resistor manufactured by **KOA Speer Electronics**. It is specifically designed for surface-mount applications where accurate current measurement and thermal stability are critical. --- ### 1. Key Technical Specifications The following table outlines the core electronic characteristics of the TLM2HDR10FTE: | Parameter | Specification | | :--- | :--- | | **Resistance Value** | 100 mΩ (0.1 Ω) | | **Power Rating** | 0.25 Watts (1/4 W) | | **Tolerance** | ±1% (F) | | **Package Size** | 0805 (Inch) / 2012 (Metric) | | **Temperature Coefficient (TCR)** | ±100 ppm/°C | | **Operating Temp Range** | -55°C to +155°C | | **Technology** | Metal Plate / Thin Film | --- ### 2. Physical Construction The "TLM" series utilizes a specific construction method to ensure reliability: * **Metal Plate Element:** Unlike standard thick-film resistors, this uses a metal alloy plate which provides superior heat dissipation and lower noise. * **Terminations:** Features high-quality solderable end-caps designed to minimize parasitic resistance at the solder joint. * **Protective Coating:** An ultra-high temperature resin coating protects the resistive element from environmental degradation. --- ### 3. Application Use Cases Because of its low resistance and high precision, this component is typically used in: 1. **Current Sensing:** Placed in series with a load to measure voltage drop (Ohm's Law: $V = I \times R$), allowing a microcontroller to monitor current consumption. 2. **Battery Management Systems (BMS):** Monitoring charge and discharge cycles in portable electronics. 3. **DC-DC Converters:** Providing feedback loops for power supply regulation. 4. **Motor Control:** Detecting over-current conditions to protect circuits. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **TLM:** Series Name (Metal Plate Current Sense) * **2H:** Size Code (0805 / 2012) * **D:** Termination/Construction Style * **R10:** Resistance value (R denotes decimal; 0.10 $\Omega$) * **F:** Tolerance (±1%) * **TE:** Packaging (Tape and Reel)