DataSheetCatalog.com is a site where you will find everything about electronic components and semiconductors.
At this site you will be able to find many well known brands such as: national semiconductor, analog devices, sanyo, kec, on semiconductor, fairchild, philips, sony, toshiba, rohm, texas instruments, motorola, intersil, vishay, catalyst, panasonic, microsemi, maxim dallas semiconductor, a-data, amic technology, analogic tech, averlogic, az displays, advanced linear devices, advanced micro devices, advanced monolithic system, aeroflex circuit technology, brilliance semiconductor bytes, digital, diodes, diotec elektronische, directed energy, ESS technology, elantec semiconductor, epson company, ericsson microelectronics, everlight electronics, exar, formosa MS, fox electronics, fuji electric, GSI technology, HMC, HOLT integrated circuits, HV component, hamamatsu corporation, harwin, hirose electric, hitachi semiconductor, hittite microwave corporation, hokuriku electric industry, holtek semiconductor, honey technology, honeywell sensing, hualon microelectronics, humirel, hybrid systems corp, hynix semiconductor and hytek microsystems among many others. If you desire you can also browse products by name and a list of brands that offer that product will be displayed to you. 
