## Electronic Overview: A-DSF25LPIII-FP-R The **A-DSF25LPIII-FP-R** is a specific part number typically associated with high-density D-Subminiature connectors manufactured by **Assmann WSW Components**. It is designed for PCB mounting and high-reliability signal transmission. --- ### Technical Specifications Below are the primary electronic and mechanical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Connector Type** | D-Subminiature (High Density) | | **Number of Positions** | 25 Pins | | **Gender** | Female (Socket) | | **Contact Type** | Stamped & Formed | | **Mounting Type** | Right Angle, Through-Hole (PCB) | | **Plating** | Flash Gold (over Nickel) | | **Operating Voltage** | 250V AC/DC | | **Current Rating** | 3A per contact | | **Housing Material** | Thermoplastic (UL94V-0 rated) | --- ### Component Breakdown #### 1. Pin Configuration (25-Pin Female) The "DSF25" indicates a 25-pin density. In the standard D-Sub footprint, this provides high-density signal routing in a relatively small form factor. The female socket is designed to receive male pins from a mating cable or peripheral. #### 2. Mounting Geometry (Right Angle) The **FP-R** suffix denotes a **Right Angle** orientation. This means the connector sits at a 90-degree angle relative to the PCB. This is the industry standard for "Edge Connectors" found on the back of computers, industrial controllers, and networking equipment. #### 3. Material and Conductivity * **Gold Flash:** The contacts are coated with a thin layer of gold. This prevents oxidation and ensures low contact resistance over the lifespan of the device. * **Steel Shell:** Usually features a tin-plated steel shell for EMI/RFI shielding, providing a ground path to the chassis. #### 4. Hardware/Fixing The **"III"** in the sequence often refers to specific mounting hardware, such as threaded inserts or board locks (riveted or screw-on), allowing the connector to be securely bolted to a panel or the PCB to resist mechanical stress during plugging/unplugging. --- ### Common Applications * **Industrial Automation:** Connecting PLCs to sensors or HMI displays. * **Telecommunications:** Signal routing in rack-mounted hardware. * **Computer Peripherals:** Legacy video (VGA-style high density) or serial communication ports. * **Medical Equipment:** Reliable data acquisition interfaces.