Issue link: https://resources.mouser.com/i/1442799
Quality alloys – This will vary, based on the design. Using similar metals for equal expansion/contraction in thermal changes prevents loosening of wire termination. Housing design – A good housing will improve performance and production consistency. Captive screws – This feature prevents screws from falling out while in the open position and during shipping. Spring push-in technology – This fast termination technology does not require tools, and is available for solid and ferruled stranded wires. Tapered pin – This feature can prevent contact stubbing, and makes it easier to place the connector on the PCB. Reakdyn principle – A patented mechanical locking of screws prevents loosening due to vibration or thermal expansion Pluggable two-piece design Wire cage – A larger size allows better current capacity and mechanical strength. Pressure plate – A serrated plate penetrates oxidation that might be present before wire termination. Increased wire retention is an added benefit. Reakdyn principle – A patented mechanical locking of screw prevents loosening due to vibration or thermal expansion. Captive screws – This feature prevents screws from falling out while in the open position and during shipping. Plug materials – The screw and cage should be made with high-quality copper alloys. Identical materials result in equal expansion and contraction during temperature changes. This prevents loosening of screws, which happens when products are made with dissimilar metals. Superior metals – Receptacle beams provide a high conductivity level, while good spring performance assures that the product maintains proper normal force over its lifespan. Header materials – A high-quality copper alloy will improve electrical characteristics. Tin plating with nickel under-plate ensures optimal solder performance. Header housing – Look for a secure pin fit with consistent straightness of housing. This will provide good fit on the PCB and mating plug with consistent key retention for positive key options. Pin alignment – Straight pins make a secure connection. They prevent stubbing of the connection at the mating face and simplify placement on the PCB at the solder posts. Terminal Blocks Learn More 4 • Broad selection of terminal blocks for Pluggable, DIN Rail, and Fixed devices • Provides thousands of versions to meet the high demands of signal, data, and power connectivity • All of these connection technologies can be freely combined with each other using the same accessories References: http://nepp.nasa.gov/whisker/background/index.htm Terminal blocks are small, but they play a significant role in the performance of a PCB. While there are many different terminal blocks on the market, choosing a terminal block made with lesser materials or manufacturing defects can result in serious problems. Phoenix Contact understands the complexities of terminal block design. Phoenix Contact practices mitigation techniques to ensure a consistent supply of whisker-free products. With in-house mold and tool design, along with regular maintenance, Phoenix Contact connectors are free from potentially dangerous mechanical and electrical faults. This attention to detail will pay off in keeping your signal, data, and power connections fast and reliable. Conclusion | 8 |