(1) color: currently, basically have red, green, blue, cyan, yellow, white, amber.
(2) current: according to different power level, the commonly used LED current 20 ma – in 2 a.
(3) voltage, voltage and color, usually red, green, and blue VF between 1.8 to 2.4 V; White, blue, green voltage between 3.0 3.6
(4) reverse voltage Vrm: LED the allowed maximum reverse voltage. More than this value, the LED can be broken down. Is important to note that some leds are not allowed to reverse (OSRAM), general Vrm is between 3 to 5 v.
(5) color temperature: to the absolute temperature (K). Eg. The noon sunlight in summer 5500 k, 4000 in the afternoon sun.
(6) luminous intensity: meter by candela CD. This suggests that the light in the space launch convergence ability, is a common optical power and convergence ability of description. Eg. Ф 5 leds I at about 5 MCD.
(7) flux: lumen lm to meter. This quantity is to describe the size of the amount of lighting and light power equivalence. Now the 1 w LED luminous flux can do 80-130 lm. Light
(8) : to lux lux meter. That is uniformly distributed between 1 ㎡ flux on the surface.
(9) : color represented by CRI. $70 eg. Luxeon cold white, neutral white to 75, the warm white for 85.
(10) half value Angle: the peak of the luminous intensity is half hour away from the Angle of center line of 2 times. According to the different application, can be divided into high directivity, standard and scattering model. Eg. XP – half value of the Angle of 110 °
(11) Wavelength
(12) center wavelength
(13)peak wavelength
(14) color purity
(15) half width
(16) : heat resistance, unit is ℃ / W. At present foreign power level LED thermal resistance of the basic within 10 ℃ / W. Eg. The Rebel, white: 9 ℃ / W; XP – G: 6 ℃ / W.
(17) life: keep to the original flux of 70% of the time, and this time can be to 30.000-100.000 hours.