Based on the part number provided, **M5RJ23RQJ-R** refers to a high-precision, automotive-grade thin film chip resistor manufactured by companies like **Susumu** (or similar specialized manufacturers following this specific nomenclature). Below is a detailed breakdown of the electronic specifications and characteristics typically associated with this part series. --- ## 1. Part Number Breakdown (Typical) While specific prefix codes can vary slightly by manufacturer, the string generally follows this technical logic: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **M5** | Series/Size | Often denotes a 0805 (metric 2012) or specific precision series. | | **RJ** | Type | Reliability Junction / Thin Film Precision Resistor. | | **23** | Resistance Code | Significant digits (standard E-series coding). | | **RQ** | Tolerance/TCR | Often indicates $\pm 0.5\%$ or $\pm 0.1\%$ tolerance with low TCR. | | **J** | Power Rating | Specific wattage rating (e.g., 1/8W or 1/10W). | | **-R** | Packaging | Tape and Reel (Standard for SMT). | --- ## 2. Technical Specifications These resistors are designed for applications where stability and noise reduction are critical. ### Electrical Characteristics * **Technology:** Thin Film (Metal Film) on Ceramic Substrate. * **Precision:** High accuracy with low tolerance (often down to $\pm 0.1\%$). * **TCR (Temperature Coefficient of Resistance):** Very low, typically between $\pm 5\text{ ppm/}^\circ\text{C}$ and $\pm 25\text{ ppm/}^\circ\text{C}$, ensuring the resistance value does not drift with heat. * **Operating Temperature:** Typically rated from $-55^\circ\text{C}$ to $+155^\circ\text{C}$. --- ## 3. Key Features ### Long-Term Stability Unlike thick film resistors, the thin film construction of the M5RJ series provides excellent sulfur resistance and long-term reliability under harsh environmental conditions. ### Low Noise Thin film technology results in significantly lower current noise and lower parasitic capacitance/inductance, making this part ideal for: * High-frequency circuits. * Audio processing. * Precision instrumentation. ### Automotive Grade (AEC-Q200) Most parts in this category are **AEC-Q200 compliant**, meaning they have undergone rigorous stress testing for vibration, thermal shock, and moisture resistance. --- ## 4. Common Applications | Category | Typical Usage | | :--- | :--- | | **Automotive** | Engine control units (ECU), ADAS sensors, and Battery Management Systems (BMS). | | **Industrial** | Precision scales, measurement equipment, and PLC controllers. | | **Medical** | Diagnostic imaging equipment and patient monitoring systems. | | **Telecommunications** | Base station power amplifiers and signal conditioning. | ---