The **EB412R43** refers to a specific series of high-performance edge-card connectors, typically manufactured by brands like **Vishay Dale**. These components are critical in industrial electronics for connecting printed circuit boards (PCBs) to backplanes or motherboards. --- ### 1. Technical Specifications The part number "EB412R43" follows a specific nomenclature that defines its physical and electrical properties: | Feature | Specification Details | | :--- | :--- | | **Component Type** | Edgeboard / Card Edge Connector | | **Contact Spacing** | 0.100" (2.54 mm) center-to-center | | **Number of Contacts** | Typically 43 positions (often dual-readout for 86 total pins) | | **Mounting Style** | Right Angle (indicated by the 'R' in the code) | | **Termination Type** | Through-hole or Solder Tail | | **Plating Material** | Usually Gold over Nickel for high conductivity and corrosion resistance | --- ### 2. Physical Design Elements The EB412 series is designed for rugged environments. Key physical attributes include: * **Bifurcated Contacts:** The contacts are split into two "fingers." This provides redundancy—if one side loses contact due to vibration, the other maintains the electrical path. * **Insulator Material:** High-grade glass-filled polyester (PBT) which offers excellent dielectric strength and thermal stability. * **Polarization:** These connectors often feature keying slots to prevent the accidental reverse insertion of the daughterboard. --- ### 3. Electrical and Environmental Ratings These parts are engineered to meet military or high-end industrial standards: * **Current Rating:** Approximately 3 Amps per contact. * **Dielectric Withstanding Voltage:** Usually rated up to 600V AC (RMS) at sea level. * **Operating Temperature:** Typically rated from -55°C to +125°C. * **Durability:** Designed for high mating cycles with minimal contact resistance increase. --- ### 4. Common Applications The EB412R43 is frequently found in the following systems: 1. **Industrial Controllers:** Used to plug modular I/O cards into a PLC rack. 2. **Legacy Computing:** Common in older bus architectures (like certain versions of the ISA or proprietary industrial buses). 3. **Telecommunications:** Used for line cards in switching stations. 4. **Medical Equipment:** Reliable board-to-board connections in diagnostic hardware. ---