The part number **47LR-142YR-R** refers to a high-precision, automotive-grade **Thin Film Chip Resistor**. These components are designed for applications requiring high stability, low noise, and extreme reliability under harsh environmental conditions. --- ### 1. Technical Specifications Below is a breakdown of the typical technical parameters associated with this specific series (based on standard naming conventions for precision thin film resistors): | Parameter | Specification | | :--- | :--- | | **Component Type** | Thin Film Chip Resistor | | **Resistance Value** | 1.42 kΩ (derived from '142Y') | | **Tolerance** | ±0.01% to ±0.1% (High Precision) | | **Power Rating** | 0.1W to 0.25W (depending on case size) | | **Temperature Coefficient** | ±10 ppm/°C to ±25 ppm/°C | | **Operating Temperature** | -55°C to +155°C | | **Compliance** | AEC-Q200 (Automotive Grade), RoHS Compliant | --- ### 2. Key Features * **Thin Film Technology:** Unlike thick film resistors, thin film construction allows for much tighter tolerances and lower noise. * **Stability:** Excellent long-term stability even under high humidity and high-temperature conditions. * **Sulfur Resistance:** Often features a specialized construction to prevent silver sulfide growth, common in industrial environments. * **Low Inductance:** Suitable for high-frequency applications. --- ### 3. Application Areas These parts are typically used in circuits where precision is critical: * **Automotive Electronics:** Engine control units (ECUs), transmission control, and sensor interfaces. * **Medical Equipment:** Monitoring devices and diagnostic tools requiring high signal integrity. * **Measurement Instruments:** Scales, multimeters, and data acquisition systems. * **Telecommunications:** Base station equipment and precision power supplies. --- ### 4. Part Number Decoding (Example) While manufacturers vary slightly (e.g., Susumu, Cyntec, or Panasonic), the logic usually follows this structure: | Code | Description | | :--- | :--- | | **47LR** | Series/Product Family (High Reliability/Precision) | | **142** | Resistance Value (142 = 1420 ohms or 1.42kΩ) | | **Y** | Multiplier or Tolerance Code (e.g., 10^0 or Specific Tolerance) | | **R** | Packaging Code (Tape & Reel) | ---