The part number **20249** is commonly associated with a specific series of **blind-mate, high-density rectangular connectors** manufactured by **Positronic**. These are industrial-grade components often used in power supply units and rack-and-panel applications. ### 1. Technical Overview: Positronic 20249 Series These connectors are part of the "GMCT" or "GAP" series, designed for heavy-duty environments requiring high reliability and polarization to prevent incorrect mating. | Feature | Specification Details | | :--- | :--- | | **Connector Type** | Rectangular High-Density | | **Housing Material** | Glass-filled Diallyl Phthalate (DAP) or Polyester | | **Mounting Style** | Panel Mount / Chassis Mount | | **Pin Configuration** | Typically 9 to 104 contacts (depending on variant) | | **Contact Size** | Standard 16 AWG or 20 AWG options | | **Voltage Rating** | Up to 600V AC (RMS) | --- ### 2. Key Components & Variations The "20249" prefix usually refers to the **insulator/housing** or a specific **hardware kit**. In the Positronic catalog, parts are often broken down as follows: 1. **Insulator (The Body):** The plastic frame that holds the metal pins or sockets in place. It is designed with "D" shaped polarization to ensure it only plugs in one way. 2. **Contacts:** Usually sold separately or specified by a suffix. These can be: * **Crimp:** For wire termination. * **Solder Cup:** For manual soldering. * **PCB Mount:** Right-angle or straight pins for circuit boards. 3. **Hardware:** Includes guide pins (to align the connectors before the pins touch) and jackscrews (to lock the connection). --- ### 3. Common Applications Due to their rugged construction, these parts are frequently found in: * **Aerospace & Defense:** Avionics rack systems. * **Telecommunications:** Power distribution units (PDUs). * **Medical Equipment:** Large-scale diagnostic imaging machines. * **Industrial Automation:** Heavy machinery control panels. ### 4. Alternative Identifications If you are looking at a 20249 part from a different manufacturer, it might refer to: * **Keystone Electronics:** May refer to specific spacers or standoffs. * **TE Connectivity / AMP:** Older legacy part numbers for specific plastic housings. ---