Based on the component designation **FRTD-R-JC-R**, this typically refers to a specialized **Thin Film Platinum Resistance Temperature Detector (RTD)**, often associated with manufacturers like Susumu or specific industrial sensor suppliers. Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ### 1. Component Identification The part number follows a specific nomenclature related to high-precision temperature sensing. | Part Segment | Definition | Description | | :--- | :--- | :--- | | **FRTD** | Series | Thin Film Platinum Resistance Temperature Detector. | | **R** | Format/Size | Usually denotes a specific rectangular chip size (e.g., 0805 or 1206 SMD). | | **JC** | Class/Tolerance | Represents the accuracy class (likely Class B or Class 1/3B). | | **R** | Packaging | Denotes Tape and Reel packaging for automated assembly. | --- ### 2. Core Technical Specifications These parts are designed for linear temperature-to-resistance conversion, following the **IEC 60751** standard. * **Base Resistance:** Typically **1000 $\Omega$ (Pt1000)** or **100 $\Omega$ (Pt100)** at 0°C. * **Temperature Coefficient (Alpha):** 3850 ppm/K (standard for platinum sensors). * **Operating Temperature Range:** Generally covers **-55°C to +155°C** (SMD type) or up to +500°C for leaded versions. * **Stability:** High long-term stability with minimal drift (typically <0.1% after 1000 hours). --- ### 3. Electronic Characteristics The device functions as a passive resistor whose value increases as temperature rises. | Parameter | Characteristic | | :--- | :--- | | **Measurement Current** | Recommended 0.1mA to 1.0mA (to avoid self-heating). | | **Self-Heating** | Low thermal mass allows for fast response times. | | **Linearity** | Excellent linearity compared to Thermistors (NTC/PTC). | | **Interchangeability** | High; standardized resistance curves allow swapping sensors without recalibration. | --- ### 4. Typical Applications The **FRTD** series is used where precision and reliability are prioritized over cost: 1. **Industrial Electronics:** Compensation of temperature-induced drift in precision circuits. 2. **HVAC Systems:** Air and liquid temperature monitoring. 3. **Medical Equipment:** Precise body or reagent temperature sensing. 4. **Automotive:** Battery Management Systems (BMS) and cabin climate control. --- ### 5. Implementation Example (Python) If you are using this sensor with an ADC and a microcontroller, you can calculate the temperature using the simplified Callendar-Van Dusen equation: ```python def calculate_temp_pt1000(resistance): # Constants for Pt1000 (IEC 60751) R0 = 1000.0 A = 3.9083e-3 B = -5.775e-7 # Linear approximation for T > 0°C # Formula: R(t) = R0 * (1 + A*t + B*t^2) # Simplified linear version: t = (R - R0) / (R0 * A) temperature = (resistance - R0) / (R0 * A) return round(temperature, 2) # Example: Measured resistance is 1100 ohms print(f"Temperature: {calculate_temp_pt1000(1100)} °C") ```