设置
快速交货
免运费
国际贸易术语
支付类型
市场产品
The construction of RCS series parts is similar to that of standard thick film chip resistors in many regards, but there is a difference which greatly impacts performance. Starting with what the product types have in common. Both standard thick film and RCS series parts are built upon a ceramic substrate chip. At the ends of the chip there is what is known as wrap-around termination, with inner electrodes, covered by a nickel barrier with a solder plating. Upon the ceramic chip substrate, making an electrical connection between the part terminals is a thick film Ruthenium Oxide resistive element. This resistive element is trimmed to achieve the desired final resistance value. Above the thick film resistive element is an overglaze layer and a protective topcoat. The major difference in construction which allows for enhanced pulse and power dissipation performance is the manner in which the resistive element is trimmed. While a standard thick film chip resistor usually utilizes a simple quick “I” or “L” style cut into the resistive element to achieve the final resistance value, the RCS series parts are trimmed using an Edge Style Laser cut. By trimming only the edge of the resistive element of the RCS series parts, current density of any single spot on the resistor is reduced compared to the more broadly made I-cut or L-cut trimming style used for standard thick film chip resistors. A hot spot may occur at the end of the I-cut or L-cut laser trim when the part is subjected to very high pulse conditions. Overall, this allows the component to have what is known as a larger “active resistive area”.
