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As A kind of process industry, low light failure LED the white light.
This LED the white light since 2009 on February 5 begin to age since the 2009 on May 28,, more than 2000 hours of the light failure is within 0% record light failure.
Details are as follows:
1000 hours:-4% light failure,
2000 hours:-1% light failure,
Shape dimension: 50 50 mm *
Photoelectric characteristic parameters:
Current, the higher the voltage, the greater the
The higher the temperature is, the smaller the current,
Light Angle: 125 degrees,
Positive current biggest can't more than 60 mA,
Reverse voltage not more than 5 V, largest
Working temperature in 35 ~ + 60 ℃-between. If not the best consider light failure life problem, also can be in + 85 degrees, the following work
Power: 0.18 W (and called on the market is the same as 0.2 W power),
The biggest bear pulse current: 250 mA,
The welding temperature: 260 + 5 ℃.
Voltage: 2.8 3.5 V to 0.1 V, between fund,
The luminous intensity: 3000 MCD (international standard distance light intensity is used to test),
Color temperature: 5000-10000 K
Spectrum coordinates: X = 0.28 0.33, Y = 0.29 0.35
Flux: the 19 to 21 lumen (international standard distance spectrum analyzer-80 testing), PMS
Reverse current: less than or equal to 1 mu A following,
This LED the white light application parameters:
1, current: 43-46 mA (this is the most ideal drive current); The biggest use current can't more than 60 mA;
2, voltage 2.8 3.6 V (requirements of pearl light moments can't exceed 5 V voltage, or to LED lamp bead or damage of serious damage to repair);
3, environmental temperature 20 ℃ ~ +-40 ℃ (requirements of lamps and lanterns cooling design do better, LED lamp pins temperature cannot exceed 60 degree);
4, if current at 14 to 20 mA, each reduce 1 mA current, its brightness reduced 4%;
5, power in 43-46 mA for 0.12 W, in 46-53 mA for 0.15 W, in 54-60 mA for 0.18 W;
6, light board after welding in electricity before test, please make sure to carefully examine the first electronic components have even tin phenomenon, be sure the lamp of no short circuit board circuit, such as a short circuit, will be to LED lamp bead or damage of seriously damaged, or immediately appear, or take days or longer to appear, cause a kind of recessive hidden trouble, so many of the satellite, the user had appeared many times, this is particularly special attention should be paid to!!!!!!!!!!!!!!!
This LED products after reliability test items as follows:
1 welding test: 260 + 5 ℃, immerse 10 seconds of time, three times in a row, not appeared a dead lamp.
2:0 ℃ thermal shock (15 seconds) ~ 1005 ℃ (15 seconds), 20 times circulation, did not appear a dead lamp.
3:100 ℃ high temperature storage environment for 1000 hours, not appeared a dead lamp.
4 low temperature storage:-40 ℃ environment for 1000 hours, not appeared a dead lamp.
5 high low temperature cycle: ℃ ~ + 40 ℃ 80, 100 times, 200 hours, no cycle in a dead lamp.
6:20 mA, normal temperature ageing in ordinary temperature 7000 hours, 5% attenuation aging, without experiencing a dead lamp.
7:60 ℃ high temperature high temperature, humidity 90% save 1000 hours, not appeared a dead lamp.
8:85 ℃ high temperature ageing, 5 mA drive, did not appear a dead lamp.
9:30 ℃ low-temperature aging-20 mA, continuous light 1000 hours, not appeared a dead lamp.
10:30 mA, normal aging in ordinary temperature 500 hours, not appear aging a dead lamp.
Cautions and requirements:
1 please open the package in the oven for 60 degrees baking 8 hours to use, and please in temperature 25 ℃, humidity + 3 to 65 + 5 degrees under the environment of the use.
2 please open the package in 24 hours, useless over the lamp of welding bead please to seal and dehumidification keep it.
3 the LED is static sensitive device, when using, all equipment, institutions need to properly grounded conductive measures.
4 when using please use antistatic costumes container, homework personnel should wear clothing and anti-static wearing a rope and effective ground of electrostatic ring.
5 be electrostatic and impulse of the destruction of the electrical characteristics of LED, there will be obvious leakage current, or driving voltage obvious become low, even a short circuit phenomenon.
6 when the welding the power not more than 40 W, tip temperature over 280 ℃, don't welding time not more than 3 seconds, at the same time, the will and anti-static, and in addition to static.
7 reflow soldering temperature when not more than 265 ℃, peak welding time don't more than 3 seconds, and at the same time, reflow welding machine Taiwan to esd and electrostatic eliminating.
8 in the welding temperature returned to normal before, must avoid make LED by any vibration or external forces.
And this product is suitable for reflow soldering.
10 is the single guide LED many before installation confirm if the polarity, installed in voltage was easy to cause injury or failure LED chips.
11 circuit design, please avoid LED and heating elements depend too close.
12 LED from plus voltage change, will cause the current index level change, improper design and current control, easy cause failure, such as excessive current LED by life problem and even burn, too little electricity shortage caused brightness.
13 different BIN, need to be installed in the same LED components, please first confirm whether can meet relevant electric and optical properties of requirements, such as current is not balanced, light color, brightness consistency, etc.
