The **W2CA-5CD-R/Q** is a specific part number typically associated with high-performance automotive or industrial **connector assemblies** or **wire-to-board/wire-to-wire systems**. While exact specifications can vary by manufacturer (often linked to brands like Sumitomo or Yazaki), the nomenclature follows a standard technical breakdown. --- ### 1. Technical Specification Table | Feature | Description | | :--- | :--- | | **Component Type** | Connector Housing / Terminal System | | **Series** | W2CA (Compact Waterproof Series) | | **Pin Count** | 5-Pin Configuration | | **Gender/Type** | Male or Female depending on suffix (typically Female housing) | | **Material** | PBT (Polybutylene terephthalate) or specialized Nylon | | **Environmental Rating** | IP67/IP69K (Waterproof/Dustproof) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Breakdown of the Part Number * **W2CA**: Indicates the series family. These are generally "Waterproof 2.0mm Pitch Compact" connectors used in harsh environments. * **5CD**: * **5**: Represents the number of circuits (5-way/5-pin). * **CD**: Refers to the cavity design or the specific keying (coding) of the connector to prevent incorrect plugging. * **R/Q**: * **R**: Often denotes a "Retainer" or TPA (Terminal Position Assurance) included in the assembly. * **Q**: Can indicate "Quick-lock" mechanism or a specific automotive quality standard (IATF 16949 compliant). --- ### 3. Key Electronic Characteristics #### A. Contact Resistance The terminals used within this housing are designed for low voltage drops, typically maintaining a contact resistance of **< 5mΩ**. #### B. Sealing Technology The "W" in the series prefix usually signifies a **Silicon Perimeter Seal**. This ensures that the electronic signals are protected from: * Engine fluids (Oil, Coolant) * High-pressure steam cleaning * Salt spray and oxidation #### C. Current Capacity Designed for signal-level and low-power applications. * **Max Current:** Approximately 5A to 10A per circuit (depending on wire gauge). * **Voltage Rating:** Up to 12V/24V DC systems. --- ### 4. Common Applications * **Automotive Sensors:** Oxygen sensors, MAF sensors, and throttle position sensors. * **Industrial Automation:** Outdoor PLC wiring and actuator connections. * **Marine Electronics:** External lighting and navigational sensors.