Opto-Electronics


Subminiature quad level light pipe for aTCA and cPCI applications

15 June 2005 Opto-Electronics

BivarOpto's new quad-level light pipe incorporates the use of SMT LEDs on both sides of printed circuit boards. The design specifically addresses use in Advanced TCA and compact PCI (cPCI) mezzanine cards, breaking previously experienced size and height barriers.

It is anticipated to find its way into a wide variety of applications where space is at a premium, yet multiple messaging and complex status indication is required.

The new aTCA light pipe is said to be the first light pipe that allows designers to take advantage of both sides of the PCB. The PCB is populated with two industry-standard right angle SMT LEDs, like Bivar's SMR series, and two industry-standard SMT LEDs. The right angle SMT LEDs illuminate the lower two light pipe positions on the quad level assembly. The top two light pipe positions within the assembly align with traditional SMT LEDs in either 0603 or 0805 packages.

This innovative footprint allows for a quad-level indicator in less than 13 mm of front panel space allowed for use in aTCA and cPCI mezzanine cards. There currently is no other solution recognised by PICMG for incorporation of four indicators in a single light pipe within the front panel envelope and PCB footprint for the aTCA specification.



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