The **PCC-SMP-E-50-R** is a specialized electronic component, specifically a **Surface Mount (SMT) Thermocouple Connector** manufactured by Omega Engineering. It is designed to allow thermocouple probes to be connected directly to a Printed Circuit Board (PCB). --- ## 1. Technical Specifications The part number follows a specific nomenclature used by Omega. Below are the primary specifications: | Feature | Specification | | :--- | :--- | | **Type** | Subminiature Surface Mount Connector | | **Calibration Type** | **E** (Chromel-Constantan) | | **Mounting Style** | Surface Mount (SMT) | | **Circuit Count** | 2-Pin (Positive and Negative) | | **Lead Orientation** | Horizontal / Right Angle | | **Packaging** | **R** (Tape and Reel) | | **Compliance** | RoHS Compliant | --- ## 2. Key Electronic Characteristics ### Calibration Compatibility The "E" in the part number indicates it is specific to **Type E thermocouples**. * **Positive Terminal:** Chromel (Nickel-Chromium) * **Negative Terminal:** Constantan (Copper-Nickel) * **Importance:** Using the correct connector material prevents "Cold Junction" errors caused by dissimilar metal junctions at the connection point. ### Surface Mount Technology (SMT) Unlike traditional through-hole connectors, this part is designed for automated pick-and-place assembly. * **Solder Pads:** Large side pads provide mechanical stability and electrical contact. * **Removable Cap:** Usually includes a high-temperature plastic cap to allow vacuum pickup during assembly, which is removed after soldering. --- ## 3. Physical Construction * **Housing Material:** High-temperature Liquid Crystal Polymer (LCP) or equivalent, capable of withstanding IR reflow soldering temperatures (typically up to 260°C). * **Transistor/Sensor Protection:** The connector includes a patent-pending design that allows for a transistor or thermistor to be mounted underneath or near the connector for accurate cold-junction compensation (CJC). --- ## 4. Typical Applications * **Handheld Thermometers:** Used for the input jack of digital temperature meters. * **Data Loggers:** Small-scale PCB-mounted temperature recording devices. * **Industrial Control Boards:** Where Type E sensors are used for high-sensitivity temperature measurements (Type E has the highest EMF output per degree). --- ## 5. Summary Table | Part Component | Meaning | | :--- | :--- | | **PCC** | Printed Circuit Connector | | **SMP** | Sub-Miniature Plug/Jack Style | | **E** | Thermocouple Calibration (Type E) | | **50** | Quantity/Bulk Designation (standard series) | | **R** | Tape and Reel packaging for SMT |