San Jose, Calif. - Fairchild Semiconductor Corp.'s QTLP603C-EB blue LED combines a low profile with low voltage to give portable-application designers performance and size benefits. These tiny LED lamps can be used in backlighting keypads and pushbuttons in portable product designs, such as cell phones and PDAs, Fairchild said.
The QTLP603C-EB LED measures 1.6 by 0.8 mm and is 0.35 mm high. Those dimensions reduce the package thickness by 42 percent over previous 0.6-mm industry-standard LED packaging, according to the company.
This is one of the lowest-profile packages available, said P.C. Yong, product director of visible products for Fairchild Semiconductor, who noted that there isn't much room for an LED to be inserted into a cell phone keypad.
Another key benefit is the LED's forward voltage of 3.15 volts at 5 milliamps, which reduces power consumption and enables longer battery life, said Yong. Competing blue LEDs typically have a forward voltage of about 3.4 V or 3.5 V. The reduction means that Fairchild was able to simplify the circuit design of portable products by eliminating the need for auxiliary drive circuitry, Yong said.
The blue LED produces a typical luminous intensity of 20 to 25 millicandelas at 5 mA, water-clear optics and moisture-proof packaging.
The QTLP603C-EB LED, available on a 7-inch (178-mm) diameter reel, with 2,000 units per reel, is lead-free. It meets or exceeds the requirements of the joint IPC/Jedec standard J-STD-020B and complies with European Union requirements that take effect in 2005. The price is 35 cents each in lots of 10,000. Delivery is immediate for volume production.
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