high luminance 2835 CRI >80 performance light emitting diode LED

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Item specifice:

IP Rating: IP65 Color Temperature: Warm White Size: 2.8*3.5*0.65mm
Viewing angle: 120 Emitting color: white Working lifetime(Hour): >36000h
Power(W): 0.2w Luminous Flux(lm): 24-28 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: 2.8*3.5*0.65mm (Top view white LED)
  - Emitted Color: White
  - Soldering methods: All SMT assembly methods
  - Enables 3-, 4-, 5-step MacAdam ellipse kits
  - Extremely wide viewing angle,standard form factor design flexibility
  The minimum luminous efficiency
2. Typical Application:
  - Bulb                                                                        
  -  ndoor & 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 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.
high luminance  2835  CRI >80 performance 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 the principle used in SMD LED lamp, should pay attention to what the problem?
LED white is the light emitting diode, a PN junction to the most important use of SMD beads is the heat, according to the different manufacturer beads, glue package is not the same, should pay attention to pre baking time and temperature, the latter should pay attention to the patch temperature, the most important is the price, many manufacturers in order to cost savings, internal chip used is too small does not meet the standards, support steal frugal material, with iron, the failure cycle shortened, LED lamp can not reach the ideal effect. Again, the LED supply current must not exceed the rated value, which is an important factor in damage to lamps and lanterns
Q:LED light SMD LED package in what form, trouble you under the guidance of...
Draw your own line, mm is replaced by mil on the line, with vernier caliper measurement, or know the model, count the number of mil. For example, 5050 is a close square with a width of 5.0mm*5.0mmInline LED (such as straw hat lights, 5mm), piranha LED, surface mount LEDSinglechip collection from hardware to software chm
Q:How many volts is a single LED on the LED patch band?
3V or so, generally three, a group plus a resistor, power supply with 12V
Q:LED patches have several ways of welding. Which ones can be reflow? What can be done by eutectic welding? Is the welding of viscose and lens material is required?
Chip and stent welding methods are: eutectic welding, silver glue fixed, resin insulation and fixed silicone rubber insulation fixedWelding beads: reflow soldering, hot plate welding and manual soldering.
Q:SMD LED specification
LED patch: 0603, 0805, 1206, 1210, 5050. The 0603: conversion to metric is 1005, that of the LED element length is 1.0mm, width is 0.5mm. The trade is abbreviated as 1005, and the English name is 0603. The 0805: conversion to metric is 2125, that of the LED element length is 2.0mm, width is referred to as the 2125 inch 1.25mm. industry, it is 0805. The 1206: conversion to metric is 3216, that of the LED element length is 3.2mm, width is 1.6mm. The trade is abbreviated as 3216, and the English name is 1206. The 1210: conversion to metric is 3528, that of the LED element length is 3.5mm, width is 2.8mm. The trade is abbreviated as 3528, and the English name is 1210. The 5050: This is a metric called, said that the LED element length is 5.0mm, width is 5.0mm. Industry abbreviation 5050
Q:The quality of the LED patch module
Quality of circuit board. In the same quality of LED, the quality of PCB will have an important impact on the life of LED. The circuit board is divided into aluminum plate, glass fiber board, semi glass fiber board and paperboard. The quality of aluminum is the best, the best cooling effect, but the cost is too high, the domestic manufacturers generally only in high-power LED products use, LED module manufacturers generally use cardboard, semi glass fiber and glass fiber board. Module, piranha, straw hat module monochrome is generally used in cardboard or semi glass, commonly used glass fiber or semi SMD glass fiber board. Colorful and full color module series generally at least half of glass fiber, so as to match.
Q:How do led patches measure good or bad?
The patch LED is also called SMD LED. Its principle of luminescence is to pass the current through the compound semiconductor. Through the combination of the electron and the hole, the excess energy will be released in the form of light to achieve the effect of luminescence.
Q:Notes on patch LED
Storage bags are sealed and stored at a temperature of <40 DEG C.
Q:Patch LED manual welding, how can welding not burn lights?
The welding speed and welding time because certainly give light foot heat, so the speed must be fast, tin wire and tip with better, while heating to tin iron head, avoid heating time is too long.

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