The **PCC-SMP-T-50-R** is a specialized electronic connector designed for temperature measurement applications. It is part of the Omega Engineering PCC series, specifically engineered to connect thermocouples to printed circuit boards (PCBs). --- ## Technical Specifications | Feature | Specification | | :--- | :--- | | **Thermocouple Type** | Type T (Copper-Constantan) | | **Connector Type** | SMP (Subminiature) | | **Mounting Style** | PCB Mount (Horizontal/Right Angle) | | **Body Material** | Glass-filled Nylon | | **Pin Material** | Copper (+) and Constantan (-) | | **Temperature Rating** | Up to 220°C (425°F) | | **Quantity Suffix** | -50 (Pack of 50), -R (Reel/Bulk packaging) | --- ## Key Components and Features ### 1. Material Composition (Type T) As a **Type T** connector, the internal pins are made of actual thermocouple alloys: * **Positive Terminal:** Pure Copper. * **Negative Terminal:** Constantan (Copper-Nickel alloy). * **Purpose:** Using identical metals to the thermocouple wire prevents "parasitic junctions," which are unintended voltage drops that occur when dissimilar metals meet, ensuring high-accuracy temperature readings. ### 2. Physical Design * **Subminiature (SMP) Size:** These are compact connectors designed for high-density electronic layouts. * **Transistor Retainer Clip:** The "PCC" designation often includes a patented clip design that allows the connector to be securely attached to the PCB without specialized tools or excessive soldering stress. * **Polarized Pins:** The pins are sized differently (one wide, one narrow) to prevent the user from plugging in the thermocouple backwards, which would cause inverse temperature readings. ### 3. PCB Integration The "R" suffix typically refers to the packaging or orientation intended for automated assembly. These connectors allow a handheld thermocouple probe to be plugged directly into a circuit board, acting as the bridge between the analog sensor and the digital processing components (like an ADC or Microcontroller). --- ## Typical Applications * **Digital Thermometers:** Internal connection point for handheld devices. * **Data Loggers:** Multi-channel temperature recording boards. * **OEM Instrumentation:** Integrating temperature sensing directly into industrial control motherboards. * **Cold Junction Compensation (CJC):** Often placed near a thermistor on the PCB to allow the software to calculate the absolute temperature.