The summary and main materials of smd resistor

Generally speaking, there are two screen printing methods for SMD resistor, one is conventional 3-digit representation, the other is conventional 4-digit representation, 3-digit multiplier code notation, R represents the position of the decimal point, and m represents the decimal point position. Except for the 0201 and 0402 volume SMD resistor without silk screen, there will be others, because the 0201 and 0402 volume SMD resistor are too small to be printed.

SMD resistor have a wide range of applications due to their small size and easy installation. General application scope: autonomous driving, medical treatment, renewable energy, 5G communication, robotics, AR/VR, IoT drones, etc. The main material electronic pastes for SMD resistor include: back electrode paste, face electrode paste, resistor paste, primary glass paste, secondary protection paste, marking paste, and terminal electrode paste. The lead in the chip resistor products is all contained in the electronic paste, and in all the film layers, the lead is mainly contained in the glass powder of the resistor. Because it is inevitable that resistor contain lead, they are included in the exemption range and manufacturers can use them with confidence.