1W 3W 440-445nm Blue LED 45mil

Emitted color:  
Wavelength: 440-445nm
Chip Quantity: 1pc.
Forward voltage: DC 3-3.6V
Forward current: 350mA for 1w. 700mA for 3w.
Viewing angle: 140 degree.
Material Feature: Taiwan Epistar 45mil chip.






 
 
 
Please contact me WeChat, QQ or email to discuss specific payment and delivery methods.
Each lamp has specific test report and spectra, please contact my WeChat, QQ or e-mail can be obtained.

Infrared voltage 1.3-1.6v
When the input current 350mA is called the 1W input current 700mA, it is called 3W, when the input current
1400mA is called 5W
The actual calculation of 1w=0.35A*1.3v=0.455w, 3w=0.7A*1.3v=0.91w, 5w=1.4A*1.3v=1.82w
Please note the difference between the call and the actual data.
UV Blue Green and white light voltage 3-3.8v
When the input current 350mA is called the 1W input current 700mA, it is called 3W, when the input current
1400mA is called 5W
The actual calculation of 1w=0.35A*3v=1.05w, 3w=0.7A*3v=2.1w, 5w=1.4A*3v=4.2w
Please note the difference between the call and the actual data.
Red orange yellow voltage 2-2.6v
When the input current 350mA is called the 1W input current 700mA, it is called 3W, when the input current
1400mA is called 5W
The actual calculation of 1w=0.35A*2v=0.7w, 3w=0.7A*2v=1.4w, 5w=1.4A*2v=2.8w
Please note the difference between the call and the actual data.




Because the power is not stable
Generally the fluctuation of current +-5% after a period of time because the device internal conversion current
most easily aging big fluctuations even more than 20% so it is easy to overload burned lamp
So the supply manufacturers generally will be the measurement of current fluctuations in advance will mark
small
This will not exceed the upper limit of the light source even if the maximum fluctuation value is reached
Thus the normal use of the light source is guaranteed.
Professional LED drive power supply has a circuit to protect the light source


Aluminum substrate is only convenient for wiring and insulation, and it is recommended that the aluminum
substrate be added to the LED radiator
The bottom beads coated with thermal grease
Cling aluminum substrate
Two stitches
Like CPU's heat dissipation principle, the heat is transmitted through the bottom circle.
You must use LED constant current power supply, power conversion with other driving lamp cannot burn
You need to be at the bottom of aluminum substrate coated with thermal grease, screws tight to LED above the
radiator, the heat will be convenient.
Do not install in the process of LED and LED lens surface emitting regions exert any pressure, adverse action
will cause the LED open dead lights.
Please do not use the power supply constant pressure type, many customers with constant pressure type power LED
lamp burned.
You need an additional radiator and drive power, which can not be powered by a switching power supply.
Konwin vertical 365-370 chip is the latest batch of light blue yellow white, please note that before buying.
The radiator will not burn lamp
The current voltage overload power will not suitable lamp burned
For special customization, please contact us and arrange the transfer.
If you receive the goods, please sign it in the face of the courier. If it doesn't match, please reject it
immediately. We'll send it back to you again. If you check it again after receipt, you will be unable to
confirm it.
Although each batch of beads is the same chip production, but the production of different batches, there may be
a slight difference, please check the single test no problem and then use a lot of, don't just use a lot. No
welding does not affect the two sale of the beads can return, need you there can be responsible for return
shipping.


The number of tiles and a single lamp led to different customers different cannot be produced in advance
LED use of attention
1. welding conditions
LED welding process is fast and the temperature can not be too high. Bad welding operation will seriously
affect the performance of LED. Please do the welding according to the following conditions:
A, manual welding: the soldering iron can't exceed 40W, temperature and time are 350 degrees /3S (recommend
using constant temperature soldering iron)
D, not touching LED convex welding iron process and the appearance of the LED colloid, the faulty operation
will destroy the LED.
2, working conditions
A, use a constant current or current limiting circuit for driving.
B, LED working temperature can not exceed 60 degrees, higher than this temperature, please do heat treatment.
3, installation conditions
A, do not install the process of LED and LED lenses surface emitting regional imposed any pressure, adverse
action will cause the death of an open LED lamp.
Please use the LED constant current power supply and do the heat dissipation current and voltage not overload.
You can't use other power supply to refit the drive. Please uncover the protective film before it is lit.
Please use LED constant current supply and do not overload the current and voltage.
Please use the 10W 10w3 3 series and LED constant current power supply, power conversion with other driving
lamp will burn not, such as the PC power supply immediately burning lamp.
20W with 10 strings 2 and 30W with 10 strings 3, and so on, 100W with 10 series 10 and radiator matching the
number of tiles.
Integrated lamp bottom coated with thermal grease, screws tight to the upper part of the radiator, do not
install the process of LED and LED lenses surface emitting regional imposed any pressure, adverse action will
cause the death of an open LED lamp.
The fan can not blow the bare light equal to the effect of no heat dissipation, and the radiator is required.
Although each batch of beads is the same chip production, but the production of different batches, there may be
a slight difference, please check the single test no problem and then use a lot of, don't just use a lot. No
welding does not affect the two sale of the beads can return, need you there can be responsible for return
shipping.


Attention to the application of high power LED products
During the application of high-power LED products and devices, heat dissipation, electrostatic protection and
welding have a great impact on their characteristics, which requires the attention of application customers.
1. Heat dissipation:
In the application of high power LED products, it is necessary to do a good job of heat dissipation to ensure
the normal work of high power LED products.
1. heat sink requirements.
Shape and material: if the sealing requirement of the finished product is not high, it can be directly
convective with the outside air environment. It is suggested that the aluminum or copper heat radiators with
fins are used.
2. effective heat sink area:
For 1W high power white LED (the other is basically the same color) our recommended fin effective radiation
total surface area is larger than 50-60 cm. For 3W products, recommended fin effective radiation total surface
area is greater than or equal to 150 cm, higher power as the case and the test results of increase, try to
ensure the temperature of the radiator is less than 60 DEG C.
3. connection method:
High power LED substrate and the heat sink is connected. Please ensure the two contact surface is smooth, good
contact, in order to strengthen the contact surface with two degree, LED suggested in the bottom of the
substrate or coating a layer of heat sink thermal grease (thermal grease thermal conductivity is larger than
3.0W/m.k), thermal grease requirements apply evenly and properly, and then pressing and fixing screws.
Two. Electrostatic protection.
LED is a semiconductor device, which is more sensitive to static electricity, especially for white, green, blue
and purple LED to prevent static electricity and eliminate static electricity.
1. generation of static electricity:
Friction: in daily life, any two different material objects can be separated after contact, then generate
static electricity, and the most common way to generate static electricity is friction generated electricity.
The better the insulation of the material is, the easier it is to rub the electricity. In addition, any object
of two different substances can be separated after contact and can produce static electricity.
The induction for conductive materials, because the electron can flow freely on the surface of it, such as
placing an electric field, because of the repulsion and attraction, positive and negative ions will be produced
on the surface of the charge transfer, will.
(3) conduction: in the case of a conductive material, a charge transfer will occur due to the free flow of
electronic energy on its surface, such as contact with a charged object.
2. the harm of static electricity to LED:
(1) the heat generated by the electric current or electric current caused the local injury of LED, which shows
a rapid increase in leakage current and still can work, but the brightness is reduced and the life is damaged.
(2) destroy the insulating layer of LED because of the electric field or current, so that the device can not
work (completely destroyed), and it is a dead lamp.
3. electrostatic protection and elimination measures:
For the entire process (production, testing, packaging, etc.) all employees with direct contact with the LED
should do well to prevent and eliminate electrostatic measures, mainly
1. Shop floor and ground floor.
2, the worktable is antistatic worktable, and the production platform is well grounded.
3. The operator wears antistatic clothing, antistatic ring, gloves or foot ring.
4, welding electric soldering iron earthing measures.
5. Antistatic materials are used in packaging.
Three. Welding.
When welding, please pay attention to the best choice of constant temperature soldering iron. The welding
temperature is 260. The time of the contact between the soldering iron and the LED plate is not 3S.