The origin of the name of wafer resistor is in 1995, by the resistance manufacturer - First resistance capacitor Co., LTD. (Firstohm) the late chairman Li Zhengzheng named for the first time, then the industry spread and widely used the name of wafer resistor. Most applications of wafer resistors in the market today are in power, communications, medical, instrumentation, automotive, lighting, industrial automation, and so on.

The contact between wafer resistor and circuit board is fixed on the circuit board by Surface Mount Technology (SMT: Surface Mount Technology). Different from the traditional two-legged plug-in resistor, SMT machine is faster, more accurate and more efficient. The surface adhesion technology is the same as Chip Resistor, and there are corresponding sizes in the same power range and can be substituted with each other, so the convenience of use is increased. Wafer resistors are significantly superior to chip patch resistors in mechanical or electronic characteristics, such as earthquake resistance, resistance to deformation, resistance to shock, suitable for industrial or long-term use in harsh environments

The wafer resistance is between the chip resistance and the in-line resistance, which is mainly applicable to the high-order circuit with large current/high voltage impact resistance/high safety requirements. Compared with the in-line resistance, the lead is removed, so the parasitic inductance generated by the in-line resistance at high frequency is greatly reduced. At the same time, it can solve the problem that the accuracy and temperature coefficient cannot be improved when the in-line resistance is small.