The **M500268TPK-R** is a specific part number typically associated with high-precision **Thin Film Chip Resistors**. These components are widely used in automotive, medical, and industrial electronics where stability and low noise are critical. Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ## 1. Technical Specifications Thin film resistors are known for their precision. The "M500" series usually indicates a specific power rating or package size (often 0805 or 1206 depending on the manufacturer’s datasheet). | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Thin Film Precision Chip Resistor | | **Resistance Tolerance** | ±0.1% to ±0.5% (High Precision) | | **Temperature Coefficient (TCR)** | ±25 ppm/°C to ±50 ppm/°C | | **Operating Temperature** | -55°C to +155°C | | **Construction** | Metal film on high-grade ceramic | | **Termination** | Lead-free (RoHS Compliant), typically Sn (Tin) | --- ## 2. Key Internal Features ### A. Thin Film Technology Unlike standard "Thick Film" resistors (which use a paste), the **M500268TPK-R** utilizes a vacuum-deposited metallic layer on a ceramic substrate. This results in: * **Lower Noise:** Reduced current noise compared to thick film. * **High Stability:** Better performance over long periods and varying temperatures. ### B. Protective Coating The "TPK" designation often refers to the specific packaging or coating used. The resistor element is typically covered with an epoxy or glass overcoat to protect against moisture (humidity) and mechanical stress. --- ## 3. Applications Due to the precision and reliability of the M500 series, it is found in the following circuits: 1. **Automotive ECU:** Engine control units requiring stable resistance values despite heat. 2. **Medical Instrumentation:** Low-noise signal processing for diagnostic equipment. 3. **Power Inverters:** Used in feedback loops for voltage regulation. 4. **Telecommunications:** High-frequency base station hardware. --- ## 4. Part Number Decoding (General Structure) While manufacturer codes vary slightly, the suffix **"-R"** almost always indicates **Tape & Reel** packaging for automated SMT (Surface Mount Technology) assembly. * **M500:** Series/Size Identifier. * **268:** Resistance Value (e.g., 26.8 Ohms or 268 Ohms depending on multiplier). * **T/P/K:** Tolerance, TCR, and Packaging codes. * **-R:** Reel packaging for pick-and-place machines.