high efficiency 2835 light emitting diode LED

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Item specifice:

IP Rating: IP65 Color Temperature: Warm White Size: 2.8*3.5*0.8mm
Viewing angle: 120 Emitting color: white Working lifetime(Hour): >36000h
Power(W): 0.5w Luminous Flux(lm): 55-65 Certification: Energy Star,REACH,RoHS
Input voltage(V): 2.8-3.4 Working Temperature(℃): -40-100℃ CRI (Ra>): >80
Warranty: one year

Product Description:

1. Features & Benefits
 -  Package: 3.5*2.8*0.65mm (Top view white LED)
 -  Emitted Color: White
 -  Soldering methods: All SMT assembly methods
 -  Enables 3-, 4-, 5-step MacAdam ellipse kits

2. Typical Application:
  - Bulb
  - Indoor & Outdoor sign board back light
  - Advertising backlighting
  - General use.

 3. Precautions for use
   3.1  Soldering
        SMD LED encapsulation is very flexible, outside force easily demolish radiant surface and plastic, As soldering , Please handle with care!
    a. With No-clean Flux, according to reflow soldering cure condition when soldering, Reflow soldering should not be done more than two times, simultaneity you must insure clean on the radiant surface. Otherwise, foreign objects can affect radiant color.
    b. Don’t process manual soldering except repair. Recommended to be soldered with 25W Anti-static iron, The temp. of the iron should be lower than 300℃ and soldering time should not be done more than three seconds, at the same time iron can’t touch radiant surface and plastic.
    c. Don’t twist LED in course of manual soldering and experiment, Otherwise, the lights will not work possibly.
    d. Please use the same BIN grade in one panel, and don’t mix the difference BIN grade in one panel when soldering. Otherwise, it will cause a serious uneven color problem.
    e. Please control the sulfur content of solder paste and PCB.
    f.  Pb-free solder temp.-time profile as below:260℃Max.

   3.2  Cleaning
    a. Don’t be cleaned with ultrasonic. Recommended to be wiped with isopropyl alcohol or pure alcohol, wiping time should not be more than one minute. LED must be placed at room temperature for fifteen minutes before producing .you must insure clean on the radiant surface. Otherwise, foreign objects can affect radiant color.
    b. LED can’t be in contact with acetate、trichloroethylene,acetone、sulfur、nitride、acid、alkali、salt.These matters can destroy LED.

   3.3 Sealing
    a. Sealing glue can’t contain sulfur,because these matter can affect fluorescence powder poisoning.
    b. When using normal sealing glue, recommended will be operated life for 168hrs under normal temperature.
   3.4 Storage
    a. Don’t open the moisture proof bag before ready to use the LEDs.
    b. The LEDs should be kept at 30℃ or less and 60%RH or less before opening the package. The max. period before opening the package is 1 year.
    c. After opening the package, the LEDs should be kept at 30-35%RH or less, and it should be used within 3 days. If the LEDs should be kept at 30-35%RH or more, and it should be used within 4 hours.
    d. If the LEDs be kept over the conditions of 20%, baking is required before mounting. Baking
 condition as below: 70±5℃ for 12 hours for bulk goods, 105±5℃ for 1 hours for roll goods.

    e. The environment have no acid、alkali、corrosive gas、intensively shake and high magnetic field.
   3.5 Static
    a. Static and Peak surge voltage can destroy LED, Avoiding Instantaneous voltage when turn on or turn off the lights.
    b. Please wear Anti-static wrist band、Anti-static glove、Anti-static shoes in the course of operation, and the equipment must be grounded.
    c. After LED is be destroyed, leakage current increase obviously, and it will be forward voltage falling or failure lamp in the case of low current.
   3.6 Test
    a. Customer must apply the current limiting resistor in the circuit so as to drive the LEDs within the rated current. Otherwise slight voltage shift maybe will cause big current change and burn out will happen.
    b. Also, caution should be taken not to overload the LEDs with instantaneous high voltage at the turning ON and OFF of the circuit.

    c. The reverse voltage mustn’t exceed 5v when lighting on or testing the LED,otherwise, LEDs will be damaged.

   3.7 Else

    Radiant color of LEDs will be a little change with the current, recommended that LED is be used in series and resistance, when lighting, please don’t see directly radiant surface of LED, otherwise LED will burn eyes.high efficiency 2835 light emitting diode LED

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Q:What is the rated current for the white patch LED?
Generally small power LED rated current is basically 20mA
Q:What is patch LED?
LED lights, a common model, has 34654635285050 piranha.The most common assembly of lights and PCB boards is the DIP, that is, dual in line and SMT surface mount technology two.The 346546 is the LED with two positive and negative pins, which are inserted into the PCB board after cutting the foot;3528 and 5050 are a cube with 3 LED lights inside, known as the "three in one" LED lamp. It has no pin underneath, but has a metal patch that can be passed through the reflow soldering machine through the solder to the PCB board.General indoor LED screen with more patches, outdoor screen with more pins.
Q:What is the principle used in SMD LED lamp, should pay attention to what the problem?
LED installation method 1, don't install the LED pin in 2, under the condition of deformation in printed circuit board when installing LED, circuit board hole center distance and LED pin center spacing should be the same, if the hole spacing will make the lamp feet have residual stress and welding...
Q:SMD LED lamp working voltage?
LED is a light emitting device of low voltage, low current, low power forward current general patch type LED when using (IF) 20MA, (VF) 1.8-2.5V, voltage of red green and blue (VF) voltage is 3.0-3.6V. Different manufacturers also have small differences, so first of all, look at the color,Of course. The multi chip assembly in high voltage chip together, some current: 1 watts, 1 watts and above. A wide variety of varieties, as follows:
Q:LED light SMD LED package in what form, trouble you under the guidance of...
There are 3 types of LED packages: inline LED, piranha LED, and surface mount LED
Q:How to detect LED SMD beads
The output voltage of the digital clock diode file is not high, generally below 2.5V, so the measurement of LED lamp does not work, the best way is to external electrical measurement. If there are a lot of beads to measure it, can take a constant current power measurement.
Q:Patch LED market conditions
With good market expectations for the future status of SMD LED, all the major manufacturers have launched their own SMD LED development planning and prototype products, all of a sudden, SMD LED market showing a flourishing and lively atmosphere of contention of a hundred schools of thought.
Q:Patch LED light broken one, short circuit can use it?
Only when a constant current source is used, the LED in series can be shorted. For the shunt power supply shunt LED, the open circuit LED can be disabled without having to manage it. The short circuit must be removed
Q:What does "1210" mean in patch LED?
1210 represents the size of the LED package specification (size, specification), and represents the length and width of the resistanceSpeed adoption!!!
Q:Patch LED features
The seismic resistance, high reliability, low operation cost system.It is easy to small, thin, lightweight, easy to shape without restrictions, made all kinds of application.

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