Cree LED Lamps we use:
It’s a well known fact that Cree LED Chips have the best performances in output, lifespan, stability, etc.
How do you know your LED lights are using Cree LED chips or not?
I’m simple to recognize.
Cree's cathode design incorporates a square with parallel lines dividing the surrounded area into equal rectangles. This creates a negative "plane" instead of a point, but is also very helpful in identifying the model of LED.
You will see what the following means:
XRC / XPC - 2 rectangles
XRE / XPE - 3 rectangles (some XR-E have a 0.9x0.9mm die instead of the usual 1.0x1.0mm found in this series)
XPG - 4 rectangles
XML - 6 rectangles
Below are several ways to identify your LED chips:
Use a microscope (professional one or simplified one, both are ok) to check the cathode, Cree’s silicon carbide cathode looks very special, you can easily distinguish according to above description.
- Cree’s Optical lens is in high pellucidity and refractivity, it’s with a very smooth and glossy surface.
- Cree LED chips are well-made with very fine handcrafted, tidy and clean soldering joints.
Fake Cree LED chips:
Some chips looks the similar type and shape as the Cree chips, but if you check them with a microscope you can easily find the cathode is totally different. They are fake Cree chips.
Analysis of LED chips used for current off road LED light bars
|Photo of LED Chips|
|LED Brand||Other domestic chips||Fake Cree chips||Epistar, Bridgelux, etc.||Genuine Cree Chips|
|Lifespan||15,000 hours||22,000 hours||30,000 hours||50,000 hours|
|Decay Rate||9% per 1,000 hours||7% per 1,000 hours||4.8% per 1,000 hours||3% per 1,000 hours|
|Luminous Flux||60 Lumens / Watt||60-66 Lumens / Watt||70-90 Lumens / Watt||110 Lumens / Watt|
|Cost||1/4 Cree||1/3 Cree||1/2 Cree||N/A|