The **FRTD-R-162-P** is a high-precision temperature sensing component, specifically a **Thin Film Platinum Resistance Temperature Detector (RTD)**. It is widely used in industrial and laboratory environments where accurate temperature monitoring is critical. --- ### 1. Technical Specifications The part number follows a specific nomenclature used by manufacturers (typically related to Ohizumi or similar thermal component specialists). | Feature | Specification | | :--- | :--- | | **Sensor Type** | Platinum RTD (Resistance Temperature Detector) | | **Base Resistance** | 1000 Ohms (at 0°C) | | **Temperature Coefficient** | 3850 ppm/K (Standard DIN/IEC 751) | | **Tolerance Class** | Class B (typically ±0.3°C at 0°C) | | **Body Size** | 1.6mm x 2.0mm (Approximate) | | **Operating Range** | -50°C to +400°C (Variant dependent) | --- ### 2. Key Electronic Components & Construction The device is composed of three primary layers that determine its electrical characteristics: 1. **Ceramic Substrate:** A high-purity alumina base that provides mechanical strength and electrical insulation. 2. **Platinum Thin Film:** A microscopic layer of platinum is deposited onto the substrate. This is the "active" part where the resistance changes linearly with temperature. 3. **Glass Passivation:** A protective glass coating covers the platinum film to shield it from oxidation, humidity, and chemical contaminants. 4. **Lead Wires:** Typically made of palladium-gold or nickel-plated wire to ensure a stable electrical connection. --- ### 3. Electrical Characteristics The FRTD-R-162-P operates on the principle that the electrical resistance of a metal increases as the temperature rises. * **Linearity:** Unlike thermistors, this RTD is highly linear, making the conversion from resistance to temperature mathematically simple. * **Stability:** Platinum is a noble metal, meaning it does not oxidize easily. This results in very low "drift" over time compared to thermocouples. * **Self-Heating:** Because it is a resistive element, passing too much current (Excitation Current) through it will generate heat, causing measurement errors. It is recommended to keep the current below **1mA**. --- ### 4. Typical Applications Due to its small form factor and 1000-ohm base resistance (Pt1000), it is ideal for: * **HVAC Systems:** Monitoring air and fluid temperatures. * **Automotive:** Battery pack thermal management. * **Medical Devices:** Precision body or fluid warming equipment. * **Industrial IoT:** Low-power remote sensors (Pt1000 requires less current than Pt100, saving battery life).