Know more about led parameters

led chip size:
led sharp can divide into two kind different sharp. which is circuit and other is square.

general Knowledge of led:
User can see different colour light of led . these light complexes are consist of different wavelength . for example:
the wavelength range of the red light to be betweet 620~630nm.
the wavelength range of the green light to be betweet 527nm.
the wavelength range of the blue light to be betweet 470nm.
the wavelength range of the yellow light to be betweet 585nm.
in fact the white light was one of the blue light,topped with phosphor.

the number of led chip:
the most common is to employ one chip to a led . which may be appropriately altered four led chip.for example: the straw hat led lamp have here is two led chip.

viewing angle of led:
viewing andle of DIP led general is 120°（or 45°）.led strip have used the 45°; viewing andle of SMD LED as 120°.

led voltage:
there is a great variety of led voltage, different colour different power has different operation voltage.
red / yellow: general use for 1.8V~2.1V
white/blue/green: general use for 3.0V~3.6V

led currently:
small led(include smd led and dip led),The input led currently level should not be set to the point of distortion(<=40mA).
high power led,reliability evaluation is realized by using DC currenlty is 150mA.