The **W2SP-143-R** is a specific part number associated with high-reliability interconnect components, specifically a **Micro-D connector** (often adhering to MIL-DTL-83513 standards). These connectors are designed for space-constrained environments requiring high pin density and extreme durability. --- ### 1. General Specifications The W2SP-143-R belongs to a series of rectangular connectors used in aerospace, defense, and high-end industrial applications. | Feature | Specification | | :--- | :--- | | **Connector Type** | Micro-D (Microminiature) | | **Contact Density** | 0.050" (1.27 mm) Pitch | | **Gender** | Socket (Female) | | **Mounting Style** | PCB Mount (Vertical/Straight) | | **Termination** | Solder Tail / Through-hole | | **RoHS Compliance** | Yes (indicated by the "-R" suffix) | --- ### 2. Key Electronic & Mechanical Attributes #### A. Contact Design The "SP" in the part number usually refers to a **Twist Pin** contact system. - **Twist Pin Technology:** Unlike standard stamped contacts, these consist of a bundle of wires twisted together. This ensures multiple points of electrical contact even under high vibration and shock. - **Plating:** Typically gold-plated (per MIL-G-45204) to prevent oxidation and ensure low contact resistance. #### B. Housing and Shielding - **Material:** Usually high-grade aluminum alloy with electroless nickel or cadmium plating. - **Insulator:** High-temperature polyphenylene sulfide (PPS) or liquid crystal polymer (LCP), which can withstand soldering temperatures and extreme thermal cycling. #### C. Electrical Ratings - **Current Rating:** Approximately 3 Amps per contact. - **Dielectric Withstanding Voltage:** ~600 VAC at sea level. - **Insulation Resistance:** 5000 Megohms minimum. --- ### 3. Part Number Breakdown (Typical) While naming conventions can vary slightly by manufacturer (such as Winchester/Interstate or Glenair counterparts), the "W2SP-143-R" generally decodes as follows: 1. **W2**: Series designation (Micro-D, PCB mount). 2. **SP**: Socket/Female contacts with specific plating/tail type. 3. **143**: Configuration code (defines the number of rows or specific pin count, often 9 to 100 pins depending on the specific series chart). 4. **-R**: RoHS Compliant (Lead-free). --- ### 4. Common Applications Due to its ruggedized nature, this part is found in: * **Avionics:** Flight control systems and cockpit displays. * **Space Systems:** Satellite payloads and orbital telemetry. * **Medical Electronics:** Portable imaging and diagnostic equipment. * **Defense:** Tactical radios and missile guidance systems. ---