Analog and mixed signal IC's
Avago Technologies
Intersil
Maxim
STMicroelectronics

Analog to Digital/ Digital to Analog converters
Analog and mixed signal
Analog Devices
Intersil
Linear Tech

Capacitors, multi-layer cermanics, Tantalum
Electrolytic
AVX
Kemet
Murata
Panasonic

Connectors
Fujitsu
Molex
Samtec
Tyco-AMP

Discrete, Diodes, transistors , op amps
National Semiconductor
NXP
Onsemi
STI
STMicroelectronics
Toshiba

FPGA'S, CPLD'S, Programmable Logic
Actel
Altera
Lattice
Xilinx

Memory, DRAM, SRAM, Flash
Multiport memory, FIFO products
Atmel
IDT
Micron
NEC
Renesas
Samsung
STMicroelectronics
Toshiba

Microcontrollers, Microprocessors,
RISC Microprocessors
AMD
Atmel
Freescale
Intel
NEC
NXP
Renesas
STMicroelectronics
Toshiba

Power Management, Mosfets, IGBT's, RF
Fairchild
International Rectifier
Intersil
Linear Tech
National Semiconductor
NXP
STMicroelectronics

Video, Audio Devices
Analog Devices
Conexant
Intel