The term **00P-R** typically refers to a specific series of high-precision, thin-film chip resistors, often associated with manufacturers like **Susumu** (specifically the RR or PR series) or standardized industrial coding for ultra-precision components. These parts are engineered for circuits where stability and low noise are critical. --- ### 1. Technical Specifications Below is a breakdown of the typical characteristics found in parts labeled under the 00P-R (Thin Film) category: | Feature | Specification (Typical) | | :--- | :--- | | **Material** | Metal Film / Thin Film | | **Tolerance** | ±0.1% to ±0.5% (Very High Precision) | | **Temperature Coefficient (TCR)** | ±10ppm/°C to ±25ppm/°C | | **Operating Temperature** | -55°C to +155°C | | **Case Size** | Often 0402, 0603, or 0805 SMD | --- ### 2. Key Internal Characteristics The "P-R" designation usually highlights two main engineering strengths: * **Thin Film Technology:** Unlike standard "Thick Film" resistors, these are created using "sputtering" (depositing a thin layer of resistive material on a ceramic substrate). This results in much lower electronic noise and better frequency response. * **Long-Term Stability:** These parts are designed to maintain their resistance value over thousands of hours of operation, even under thermal stress. * **Sulfur Resistance:** Many parts in this category are designed to be "anti-sulfur," meaning they won't corrode in harsh industrial environments. --- ### 3. Common Applications Because of their precision, you will find these components in: 1. **Medical Instrumentation:** Where accurate sensor readings are vital. 2. **Audio Equipment:** High-end DACs and amplifiers use them to minimize background hiss (thermal noise). 3. **Automotive ECUs:** Used in control units where temperature fluctuations are extreme but accuracy must remain constant. 4. **Measurement Tools:** Multimeters and oscilloscopes require these for voltage divider circuits. --- ### 4. How to Read the Code If "00P-R" is part of a larger part number (e.g., `RR1220P-103-D`), the breakdown usually follows this logic: * **RR/PR:** Series type (Thin Film). * **1220:** Case size (1.2mm x 2.0mm). * **P:** Temperature Coefficient code (e.g., 25ppm/°C). * **R:** Packaging code (usually refers to "Tape and Reel"). ---