Based on the model number provided, the **FTS-51-R** refers to a specific series of **Through-Hole Micro-Terminal Strips** (Micro Headers) manufactured by **Samtec**. These are precision electronic interconnects used to bridge two PCBs (Printed Circuit Boards) or to connect a cable assembly to a board. --- ## 1. Technical Specifications The FTS series is defined by its low-profile design and high reliability. Below are the core electronic and mechanical specifications: | Feature | Specification | | :--- | :--- | | **Pitch** | 0.050" (1.27 mm) | | **Terminal Material** | Phosphor Bronze | | **Plating** | Sn (Tin) or Au (Gold) over 50 µ" (1.27 µm) Ni | | **Current Rating** | 3.4 A per pin (2 pins powered) | | **Operating Temp** | -55 °C to +125 °C | | **Voltage Rating** | 475 VAC / 670 VDC | | **Insulator Material** | Black Liquid Crystal Polymer (LCP) | --- ## 2. Part Number Breakdown To understand the "FTS-51-R" designation specifically, we must look at the Samtec nomenclature: * **FTS**: The series prefix for Micro Terminal Strips. * **51**: This usually denotes the **number of positions per row**. However, in the FTS series, standard positions usually range from 02 to 50. If "51" is used, it often indicates a custom count or a specific lead style depending on the catalog year. * **-R**: Typically stands for the **Right Angle** orientation or a specific packaging requirement (like Tape & Reel, though "TR" is more common for that). --- ## 3. Key Electronic Characteristics ### A. Signal Integrity Due to the small **1.27 mm pitch**, these connectors are suitable for high-density applications where space is limited but signal integrity must be maintained. They provide a short signal path, minimizing inductance. ### B. Durability The use of **Phosphor Bronze** for the pins ensures excellent fatigue resistance, meaning the connector can withstand multiple mating cycles without losing electrical contact pressure. ### C. Solderability The "Through-Hole" nature of the FTS-51-R provides higher mechanical strength compared to Surface Mount (SMT) equivalents, making it ideal for connectors that may experience physical strain or frequent plugging/unplugging. --- ## 4. Typical Applications * **Industrial Controllers:** Connecting sensor modules to main logic boards. * **Medical Equipment:** Internal data transmission between compact handheld devices. * **Aerospace:** Used in avionics where low profile and high temperature resistance are required. * **Data Communications:** High-density routing in routers and switches. ---