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longer of the two leads is the positive side (Anode) and the shorter
of the leads is the negative side (cathode).
color options range from ultra-violet through infrared. Many of the
colors offered are available in different output viewing angles, but
all have clear lenses unlike other 5mm LEDs that use a colored dome
lens to create color.
5mm lenses for these LEDs effect the light that is given off. We have
one option in white that has a frosted lens which gives off a soft
light and isn't as bright and sensitive to the eyes. In addition we
offer most our color options in clear packages in different beam
angles. The beam angles just effect how wide your light is. The
smaller degrees will be more of a tight spot and will get wider and
wider the higher you go. The color LEDs come in 15, 20, 30 45 and 50
degree angles. The White LEDs come in all these angles as well as 70
degree for a more wider angle.
these 5mm LEDs directly to a power source will destroy the LED. LEDs
cannot limit their own current consumption so another device must be
used to do so, usually a resistor or LED driver. These LEDs are
typically run at a 20mA current but they can be run up to a max of
30mA. It is ok to use resistors to regulate the current to these, we
have plenty ¼ watt resistors, all you need to know is what ohm you
want. Use this equation to determine the correct resistor size: Ohms
= (Source Voltage – LED Voltage Drop)/Amps.
other semiconductor devices, LEDs are static sensitive. Take caution
when handling them and make sure you minimize static electricity
around the components.
LEDs are best for through hole mounting and in applications where you
don't have much space at all or room for heat sink. Some ways they
are used in everyday applications:
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