The most widely used size codes for patch resistors are 0805 and 1206. Moreover, there is a gradual trend to 0603. 0402 and 0201 packaging are often used in products with high integration, which also puts forward higher requirements for SMT technology level. The most commonly used tolerance is grade J.

When choosing each resistor, capacitor and inductor, the user needs to select and purchase according to the application of components. If several kinds of patch components are used, more can be purchased. However, because the volume of patch resistance is very small, how to preserve and organize it brings great trouble to engineers. It is suggested that engineers can buy a small box of patch components for storage when purchasing patch components. However, due to the loose seal of such a small box, when the components are stored in humid areas for a long time, oxidation will occur in the welding place, resulting in false welding, or purchase a sample book of Chong easy patch resistors, which can avoid the above problems and can buy a full series of resistors, but the cost is high. There are not many of each type of resistance.