The **PCC-OST-T-R** is a specific model of a subminiature thermocouple connector manufactured by **Omega Engineering**. This part is designed for printed circuit board (PCB) mounting, allowing a thermocouple sensor to interface directly with electronic circuitry. Below is a breakdown of its technical specifications and electronic characteristics. ### 1. Part Number Breakdown The nomenclature reveals the specific electronic and physical properties of the part: | Segment | Meaning | Details | | :--- | :--- | :--- | | **PCC** | Connector Style | Printed Circuit Board (PCB) Connector. | | **OST** | Connector Series | Subminiature series (standard size for small probes). | | **T** | Thermocouple Type | **Type T** (Copper-Constantan). | | **R** | Mounting Feature | Transistor-style clip (Retaining Spring) for secure mounting. | --- ### 2. Key Electronic Specifications As a precision electronic component, it must maintain the integrity of the micro-voltage signals generated by the Type T thermocouple. * **Calibration (Type T):** The pins are made of specific alloys (Copper for the positive lead, Constantan for the negative lead) to prevent the introduction of parasitic EMF (Electromotive Force) at the junction. * **Temperature Range:** Typically rated for an ambient operating environment of up to **220°C (425°F)**, though the PCB material itself usually limits this. * **Signal Integrity:** Designed for low-level millivolt (mV) signals. The use of matching thermocouple alloys ensures high accuracy in temperature measurement. * **Insulation Resistance:** High-grade glass-filled nylon body provides excellent electrical insulation between the two pins. --- ### 3. Physical & PCB Interface To integrate this onto an electronic board, the following physical characteristics apply: #### Terminal Design The pins are designed to be soldered directly into a PCB. * **Pin Spacing:** Standard subminiature spacing. * **Mounting:** Through-hole technology (THT). * **Retention:** The "R" suffix indicates a specialized spring clip that holds the connector firmly to the PCB before and after soldering, providing mechanical strain relief. #### Material Composition | Component | Material | | :--- | :--- | | **Body** | Glass-filled Nylon | | **+ Terminal** | Copper (Cu) | | **- Terminal** | Constantan (Cu-Ni) | --- ### 4. Typical Application Circuit In an electronic design, the PCC-OST-T-R serves as the bridge between the environment and the Cold Junction Compensation (CJC) circuitry. ```text [Thermocouple Probe] -> [PCC-OST-T-R] -> [PCB Trace] -> [CJC Sensor/Op-Amp] -> [ADC] ``` ---