LCPs Hold Bright LEDs
Vectra S liquidcrystal polymers (LCPs) have become the material of choice for withstanding temperatures above 260°C in lead-free soldering of LED packages.
LED packages
of 2 to 7 mm2
are continuously
molded using a
proprietary reel-toreel
technology that
overmolds open
cavities onto strips
of lead frames in a
multistation line
using multicavity
tools. Customers
fill the cavities
with dies that serve
as the light source,
wire bond the units, add a lens, and stamp
the completed package out of the strip.
The LCPs also withstand temperatures
well above 300°C, undergo minimal dimensional
change in molding and end
use, and have negligible out gassing, so
their volatiles don’t fog lenses or degrade
contacts.
Make Contact
Spectrum, operating unit of Barnes Group
Inc.
(203) 736-5200, spectrumplastics.com
Ticona, a div. of Celanese Corp.,
(800)
833-4882, ticona.com