Chip resistors are electronic components composed of several resistors with identical parameters that are packaged together. One of their pins is connected together as a common pin, while the other pins are normally led out. If a chip resistor is made up of n resistors, it will have n+1 pins, and the leftmost one is usually the common pin, which is marked with a colored dot.

Chip resistors have the advantages of convenient assembly and high installation density, and are widely used in televisions, monitors, computer motherboards, and small household appliances. They are small in size, light in weight, low in assembly cost, and can be matched with a chip mounter, with high reliability and good quality. Both infrared reflow soldering and reflow soldering are suitable for chip resistors.

There are two types of packaging for resistors: one is a resistor without a common lead, which has no polarity; the other is a resistor with a common lead, which has polarity. Resistors are passive components used for current limiting in circuits and have no directionality. However, to prevent circuit interference from external factors, such as equipotential shielding, the common end will be connected to one end, and this creates directionality. Simply put, chip resistors with a common end have directionality, while those without a common end do not.

Chip resistors usually have a common end, which is marked with a small white dot on the surface of the package. The color of the package is usually black or yellow. There is no positive or negative polarity for chip resistors, but there is a common end, which is generally marked with a white dot. If it is broken in the middle, it cannot be used as a whole, only the part with the white dot can be used. If there are five pins on the side with the white dot, it means that there are four resistors inside.

That's all about the directionality and polarity of chip resistors. I hope it helps you.