MOSFETs and Bi polar transistors are electronic devices that are used to switch or amplify voltages in circuits. 

Analog ICs, Diodes, Transistors, Mosfet, TVS and ESD Protections, LDO, DC-DC, Hall effect sensors.

Website: https://www.taiwansemi.com/en/

XTALS, Oscillators , Digital transistors, MOSFETS, IGBT Linear Voltage Regulator, DC-DC converters (Buck / Boost) Operational Amplifier 1KHz ~20MHz, Comparators Diodes, ZENER, TVS, SCHOTTKEY, BRIDGE, RECTIFIER (ULTRA FAST) MOSFET, N channel , P Channel, Complementary , Bipolar Transistors 

Website: https://ait-ic.com/

Analog ICs, Diodes, Transistors, Mosfet, TVS and ESD Protections, LDO, DC-DC.

Website: https://coretechelec.com/ 

N/P Channels, Bipolar Transistors, TVS, Schottkey, Rectifier and small signal diodes

Website: https://www.eris.com.tw/index_EN.php  

Diodes : Small signal, TVS, Schottky, Rectifiers, Bridge Diodes ESD protection Diodes MOSFETS 

Website: http://www.yeashin.com/index.php?route=common/home