Semiconductors
Logic - Fairchild, National Semi, TI, Philips, ON-semi, Toshiba, ST Micro
Linear - Analog Devices, Maxim, Linear Tech., Zetex.
Microcontroller - IDT, Intel, Motorola, TI, Toshiba, Zilog.
EPROM - AMD, Atmel, Cypress Semi, Dallas, IDT, Fujitsu, Intel, ST Micro.
Transistor/Diodes - IRF, Fairchild, National Semi, Hitachi, Siemens, Motorola, Siliconix/Vishay.
FPGA/PLDs - Altera, Atmel, Cypress Semi, Lattice, Philips, Vantis/AMD, Xilinx.
Passive Components
Capacitors - AVX, KOA, Rohm, Rubycon, Murata, TDK, Panasonic, Sprague/Vishay, Kemet.
Resistors - CTS, Dale/Vishay, KOA, Murata, Panasonic, Rohm.
Inductors - Dale/Vishay, KOA, Murata, TDK,
Crystals/Oscillators - AVX, Epson, CTS, Fox Elec.
DRAM, SRAM, Modules – Infineon, Samsung, Hynix, Micron, Nanya, Toshiba, Atmel, Cypress,
Flash memory: Samsung, Hynix, Intel, Toshiba, AMD, Fujistu, ST Micro, Renesas, Sharp, Atmel .