fr4 Resources

ZDNet Dictionary Definition

FR4: (Flame Retardant 4) A widely used insulating material for making printed circuit boards. It is constructed of woven glass fibers fiberglass that are epoxied together.; Full FR4 Definition >>

Inside Apple's blue logic boards: If you've opened a Mac to upgrade a hard drive or RAM recently you may have noticed that Apple is now using blue circuit board material as opposed to the more traditional green G10-FR4 epoxy circuit boards. G10-FR4 (FR4) is a fire rated electrical-grade, dielectric fiberglass laminate epoxy resin system...; Tags: board, logic board, FR4, G10-FR4; Blog posts 2006-11-02

Inside Apple's blue logic boards: Inside Apple's blue logic boardsIts called solder maskThe color of the PCB is determined by a thin layer of polymer that is put on the outer layers of the PCB keep solder bridges from forming between the exposed traces. The color has absolutely nothing to do with performance, they...; Tags: Corporate governance, board, logic board, blue logic board, circuit board, Apple Inc.; Discussion threads 2006-11-02
Printed Straight F Antennas for WLAN and Bluetooth: Miniaturized printed-circuit-board antennas are proposed in PCMCIA cards for WALN and Bluetooth applications. The proposed antenna is a straight F in shape printed on a FR4 substrate together with the rest of the circuit components, providing a low-cost antenna solution. The straight F antenna resembles a printed inverted F antenna,...; Tags: WLAN, Antenna, F Antenna, Bluetooth, Wireless LANs, LANs, Wi-Fi, Wireless, Networking; White papers 2003-01-15