130W Ip67 Car Led Headlight Bulbs 20000Lm 6500K H1 H3 H4 H7 H11 H13 9004 9005 9006 9007
|Lamp Body Material||Aluminum||Working Temperature(℃)||-40 - 60|
|Led Light Source||COB||Working Lifetime(hour)||50000|
Car Led Headlight Bulbs H13,
130W Car Led Headlight Bulbs
Wholesale Factory 12V 130W 20000Lm 6500K Led Lamp H1 H3 H4 H7 H11 H13 9004 9005 9006 9007 Ip67 Car Led Headlight Bulbs
Etclite I6 Pro Auto 9005 Led Bulb Headlight For Car
|Product Name:||Car LED Headlights|
|Advantages:||China Direct Factory|
|OEM/ODM:||Welcome (Mixed Colors Acceptable)|
|Payment:||T/T, Western Union, Credit Cards, Trade Assurance etc.|
|Delivery Time:||7-14 days (for stock goods)|
|Packaging Detail:||OEM package, carton package, custom-made package|
But what do LEDs consist of?
Basically, an LED consists of several layers of semiconductor compounds. Semiconductors, such as silicon, are materials whose electrical conductivity lies between that of conductors, such as the metals silver and copper, and non-conducting materials (insulators) such as PTFE or quartz glass. The conductivity of semiconductors can be greatly influenced by the specific introduction of electrically effective external substances (by means of a process known as doping). The different semiconductor layers together form the LED chip. The type of structure of these layers (various semiconductors) has a crucial bearing on the luminous yield (efficiency) and light colour of the LED.
If a current flows through the LED in the flow direction (from anode + to cathode –), light is created (emitted).
The n-doped layer is prepared by the incorporation of foreign atoms so that there is a surplus of electrons. In the p-doped layer, there are only a small number of these charge-carriers. This produces so-called electron holes (band gaps). When a voltage (+) is applied across the p-doped layer and n-doped layer (-), the charge-carriers move towards each other. At the pn junction, recombination takes place (where oppositely-charged particles combine to form a neutral entity). This process releases energy in the form of light.
Q: Product warranty ?
A: 14 months
Q: Is sample availabel ?
A: Yes. Sample order is acceptable
Q: What is terms of packing?
A: Normally we use neutral package.
Q: What is your terms of payment?
A: TT, Paypal, Western Union etc.
Q: How much will the shipping charges be?
A: Depends on the size of your shipment and the method of shipping. It's better to let us know your quanity and shipping way before asking shipping cost.
Q: How long does it take to produce?
A: 7-15 working days are possible to finish your order if raw materials are in stock.