The **18JF-666-R** is a specific part number typically associated with **Micro-D-Subminiature connectors** or high-density interconnect systems, often manufactured by companies like **ITT Cannon** or similar electronics hardware providers. These components are designed for aerospace, military, and high-reliability industrial applications. --- ## Technical Specifications Overview Below are the typical characteristics associated with this class of electronic connector: | Feature | Specification Details | | :--- | :--- | | **Connector Type** | Micro-D (High Density) | | **Body Material** | Aluminum or Stainless Steel (with Electroless Nickel plating) | | **Pin Count** | Varies by sub-series (Typically 9, 15, 21, 25, 31, 37, 51, or 100) | | **Termination Style** | Solder Cup or Wire Leads (Insulated) | | **Mounting Hardware** | Reverse Float Mount (Indicated by "-R") | | **Operating Temp** | -55°C to +125°C | --- ### Key Component Breakdown #### 1. The Micro-D Interface The "18JF" prefix usually points to a specific shell size or a proprietary series configuration. These connectors use a **Twist Pin contact system**, which provides 7 points of electrical contact to ensure signal integrity under extreme vibration or shock. #### 2. The "R" Suffix (Float Mount) The **-R** in the part number is a critical mechanical specifier. It indicates a **Reverse Float Mount** configuration. - **Function:** This allows the connector to "wiggle" slightly within its mounting cutout. - **Benefit:** It compensates for minor misalignments when mating two panels or rack-and-panel systems, preventing damage to the pins. #### 3. Material and Plating These parts are almost always **RoHS Compliant** (indicated by the 'R' in modern naming conventions). The shell is usually treated with **Electroless Nickel**, providing excellent EMI/RFI shielding and corrosion resistance. --- ### Common Applications Due to their rugged nature, these electronic parts are found in: * **Avionics:** Flight control systems and cockpit displays. * **Space Exploration:** Satellite payloads and rovers. * **Medical Equipment:** High-end imaging and diagnostic tools where space is limited. * **Defense:** Tactical communication gear and missile guidance systems. --- ### Electrical Ratings | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | 3 Amps maximum | | **Dielectric Withstanding Voltage** | 600 VAC at sea level | | **Contact Resistance** | 8 milliohms maximum | | **Insulation Resistance** | 5000 Megohms minimum |