Terminals is a key hub in the electrical connection is based on electrical connection one of the vitality of the selection of terminals is a key link to determine the quality of terminal, this article briefly outline the design of terminals to choose PA66 material superiority.
 
PA66 material, this is the choice of most manufacturers choose the most plastic materials, the material better UL94 V-0 flammability rating, the design basis should manufacturers to provide material properties table, especially CTI parameters must meet the requirement, called affect the final product whether through impulse withstand voltage, and resistance to aging test trial in accordance with UL requirements, you can use not more than 25% of the back material with 75% new material with full mixing mixed use, especially to withstand high current and high voltage products, back to the use of the material should be lower or do not fill plus.

Metal materials, the conduction current and must be flexible parts, such as terminals, tablet, The quality of the material directly affect the electrical performance and connectivity of the terminal because the conductivity of the material directly affect the temperature l and the contact resistance, flexibility, good or bad, and materials of chemical elements, elastic modulus, hardness, tensile strength related to the conductivity of the material the greater the contact resistance, the smaller the temperature rise of the lower insertion force and contact resistance the relationship of the quadratic curve.

In electroplating, plating layer film has a direct impact on the connector life of the main factors of gold and silver-plated, silver conductivity higher than gold, but its chemical stability, there is no gold, caused by the film resistance is far greater than gold but the gold-plated high cost, only recommend using the acidic environment or even worse environment of the product before use gold plating, and the tablet, the contact area with the local gold-plated, so that not only guarantee the use of performance improve, the product The cost is also greatly reduced.