Taiwan UTC IC: Linear Regulator IC (LM) 78/79 *, LM317 * / uc723; Low Voltage Differential Linear Regulator IC ld1117a / uz1084; Reference Voltage Shunt Regulator TL431; Boost Switching Regulator mc34063 / A; switching regulator TL494 for voltage control; voltage detection and system reset IC 81/82/83/88 * *, u7704 / 7705 *, uic811 / utc812; voltage reference current comparison hybrid IC um601 / 602/603 / 6 04/605/606/607/608 *, um21125; single-channel audio power amplifier LM386 / an17823, tda2003 / 2030/2050; dual-channel audio power amplifier mc34119 / tda2822; single operational amplifier m2110 / 2125; dual operational amplifier m2115, lm358; Quad Channel Operational Amplifier LM324; Low Voltage Rail-to-Rail Operational Amplifier lv321; Voltage Comparator LM393 / LM339, ts391 / A / B / C; Analog Multifunction Device, Solution Multifunction Device IC U74 (a) HC (T) 4066, 4051 / 4052/4053, u74hc4051 / 4052/4053; Hall sensor IC H1277 / UH177 / UH276 / UH277 / SK1816; Motor control IC f6908 / 1962/2961/6406/1836, sk1288 / 319 / ua9406 / um2640; General purpose Motor controller ba6208; interface drive circuit 75185/75323/75232 / ut23 2a / ut13243; Darlington Drive ULN2003 / 2004/2803/2804; wireless phone ua31136 / mc3361bp; leakage current detection m54123l; automotive IC u2043; logic u74hc **** / u74a *** / u74lv **** and other series IC. There are also transistors (bipolar transistors), MOSFETs and other products.