Cree LEDs: What are they?
As a company, Cree (Wolfspeed) has been around since 1987. From that time, they have been producing some of the best lighting-class LEDs on the market.
While the original Cree no longer exists, their tradition of producing top-quality LED chips remains under the Smart Global Holdings and Cree LED banner.
Customers use them in video screens, outdoor lighting, emergency lighting, flashlights, industrial lighting, and vehicles. You can also use them in general lighting. Cree LEDs are efficient, deliver high lumen density, and are very reliable.
What Are The Advantages of Using Cree LEDs?
Efficiency: To be fair, most LEDs are more efficient than any other light source. However, Cree LEDs are generally more efficient because they use innovative technology of their own design. For instance, the 4Flow-based LED bulbs perform and incandescent light bulbs while lasting longer and using less power.
Stringent quality and performance verifications: An accredited independent third-party laboratory verifies the performance of all Cree products. This ensures that there are no conflicts of interest.
How Does a Cree LED Work?
Cree LEDs work just as any semiconductor does.
Current flows through a conductor that carries it to the diode. The diode then emits photons, which appear to us as light. What makes Cree’s LED technology different is the materials and approach to developing their LED chips. A good example of this is their CPW5 Z-Rec high-power silicon carbide (SiC) Schottky diodes.
Venture is a professional supplier of Cree Led PCB in China for more than 10 years. Venture Cree Led PCB is fabricated with excellent grade raw materials through advanced technologies.
At Venture, you can assure that we produce Cree Led PCB with professional quality. All of our Cree Led PCB is compliant with various industry standard.
With its advanced features, Venture Cree Led PCB will surely suit your requirements!
Your Leading Cree Led PCB Supplier in China
As a leading manufacturer and supplier in China, Venture is capable of manufacturing a wide array of printed circuit boards for your specific applications.
Depending on your applications, we have different types of printed circuit boards to satisfy your need. We can manufacture excellent quality Cree Led PCB for you. Venture is more than 10 years in this industry.
As a leading manufacturer, a wide array of Cree Led PCBs is produced. Venture is experts in most Cree Led PCB manufacturing.
- aluminum Cree Led PCB
- 10w Cree Led PCB
- 10w Cree XPL Led PCB
- Cree XPE Led PCB
Venture offers a wide-ranging Cree Led PCB for your business. Its functional, durable, and general-purpose tolerance is proudly introduced by all skillful Venture staff and engineers.
If you are looking for the most deserving manufacturer of Cree Led PCB, Venture is the answer!
At Venture, we can deliver excellent quality Cree Led PCB to anywhere in the world through our impeccable services and excellent customer relationship.
For all kinds of Cree Led PCB you need, Venture can manufacture and distribute depending on your requirements. Just send us your ideal design and we are glad to deliver all your printed circuit board needs.
All of our Venture Cree Led PCB and other printed circuit board meets and exceeds industry standards such as ISO 9001, CE, UL, and RoHs.
Venture is one of the biggest suppliers and manufacturers when it comes to a printed circuit board in China. We fabricated and modeled designs to meet the exact needs of our valued customers.
For all your printed circuit board or any PCB needs such as circuit breaker PCB, cell phone PCB, Xbox one controller PCB, and many more, you can trust Venture.
We are your reliable and one-stop solution for all Cree Led PCB needs!
All in all, Venture is aligned with the world’s best manufacturer of all printed circuit boards in China for more than 20 years of experience.
Contact us today for a custom quote!
CREE LED PCB: The Ultimate FAQ Guide
Before importing Cree LED PCB from China, read this guide.
It has all the vital information you need about Cree LED PCB.
Let’s dive right in.
- What Is A Cree LED PCB?
- What Are The Benefits Of Using Cree LED PCBs?
- How Does A Cree LED PCB Operate?
- What Are Some Technologies Of Cree LED PCB?
- What Are The Applications Of Cree LED PCBs?
- What Are The Mechanical Properties Of Cree LED PCB?
- What Does Optical Control Factor Mean In Cree LED PCB?
- What Are Some Storage And Handling Techniques For Cree LED PCB?
- What Are Some Mechanical Considerations For Cree LED PCB?
- What Are The Electrical Considerations For Cree LED PCB?
- What Is The Chemical Compatibility Of Cree LED PCB?
- What Are Some Electrical Properties Of Cree LED PCB?
- What Are The Optical Considerations Of Cree LED PCB?
- What Should You Do To Maximize The Performance Of Cree LED PCB?
- How Will You Know If The LED Light Uses Cree LED PCB?
- What Are The Thermal Properties Of Cree LED PCB?
- What Are The Types Of Cree LED PCB?
- What Are The Common Materials That Make Cree LED PCB?
- What Issues And Solutions Will You Encounter During Assembly Of Cree LED PCB?
- How Does Cree LED PCB And COB LED PCB Compare?
- What Are The Chemical Properties Of Cree LED PCB?
- What Should You Consider When Designing Cree LED PCB?
- How Does CEM And FR-4 Cree LED PCB Compare?
- What Are Some Surface Finish For Cree LED PCB?
- What Are The Available Colors For Cree LED PCB?
- What Factors Affect The Color For Cree LED PCB
- What Factors Affect The Cost Of Cree LED PCB?
- What Criteria Should You Consider When Selecting Cree LED PCB Manufacturer?
- Which Are Some Design Software For Cree LED PCB?
- What Quality Standards Should Cree LED PCB Adhere To?
What Is A Cree LED PCB?
Cree LED PCBs are high-powered, efficient, and reliable circuit boards.
Besides, Cree describes a firm popular for making LED PCB products that a majority of to-tier lighting manufacturers use them.
Cree LED PCB
What Are The Benefits Of Using Cree LED PCBs?
There are several benefits Cree LED PCBs have over other manufacturers.
Here are some of the benefits:
Most LED PCBs are efficient than other types of lighting sources in the market.
However, Cree LED PCBs are more efficient as they employ innovative technology in their design.
For example, 4Flow-based LEDs outperform incandescent lights and last longer while consuming less power.
Quality And Performance
Cree LED PCBs undergo stringent laboratory verification by accredited and independent third-party organizations.
This will ensure that Cree LED PCBs meet all client interests hence no conflict.
Cree LED PCBs will save you a lot of energy since they are energy efficient.
Cree LED PCBs undergo thorough verification making them highly durable.
Superior Life Span
Most LED PCB have the benefit of having a longer life span.
However, the Cree LED PCBs can last for several years, up to six times longer than regular PCBs.
The use of mercury possess a danger to health and the environment.
Cree LED PCBs are mercury-free hence environmentally and health-friendly.
Cree LED PCBs are cost-effective hence will save you a lot as an investment.
Cree LED PCBs uses technology that enables customers to create various customized designs.
Cree LED PCBs can produce 815 lumens for a 60-watt replacement and up to 460 lumens for a 40-watt replacement.
How Does A Cree LED PCB Operate?
Cree LED PCBs operate the same way that a conductor operates.
Electric current will flow via a conductor that will transport it to the diodes.
The diodes will produce photons that appear in the form of light, visible to us.
Materials and LED chip development make Cree LED PCBs different from other LED PCBs.
What Are Some Technologies Of Cree LED PCB?
Examples of the technologies you can use in Cree LED PCBs include the following:
Cree XP-L HI V3
This is a single-die Cree LED PCB with 1095 lumens at 10 watts.
Besides, the junction temperature is 150 °C.
Cree XP l HI V3
This comes in standard or high-efficiency Cree LED PCB versions.
At 5 watts, the standard version produces 586 lumens and 735 lumens at 5.8 watts for the high efficacy model.
Cree XP G2
This technology is suitable for usages needing a mixture of light colors.
At 10 watts, their light output is 1095 lumens.
Cree XP E2
This comes with a variety of colors with the viewing angle between 115 degrees and 130 degrees.
Cree XP E
At 3.5 watts, the light output is 307 lumens.
This is available in high-density and high-intensity Cree LED PCB.
This is another form of small Cree LED PCB able to produce directional and high-lumen lighting.
At 5 watts, it can produce 493 lumens and has a 125-degree viewing angle.
This one will produce a directional high-intensity lighting solution.
With a viewing angle of 115 degrees, its light output reaches 629 lumens at 5 watts.
Cree XT E
This has one of the oldest semiconductors and is available in royal blue, blue, green, and white.
Besides, the standard binning enables it delivers an output of 251 lumens with 4 watts.
Cree XM-L RGB
This is a multicolor Cree LED PCB available in one 5mm by 5 mm packaging.
It is special since it has single addressable LEDs hence can produce red, white, blue, and green light.
Besides, it has a 130-degree viewing angle.
Cree CXA LED Arrays
These are available in small and large standard-density circuits and every basic configuration has various sized options.
Small CXA LED arrays are available in sizes such as 6 mm and 14 mm and 19 mm and 30 mm for large CXA LED arrays.
Besides, every configuration has its specific lumen rating.
Cree LED Optics
This technology will enhance or diffuse the illumination of Cree LED PCBs.
Also, you can apply it to manage illumination patterns.
cree LED optics
What Are The Applications Of Cree LED PCBs?
There are several uses of Cree LED PCBs, and they include:
- Automotive industry
- Full-color screens
- Portable lighting solutions
- Architectural and entertainment
- Retail stores
- Horticultural industries
- High density and low-density indoor lighting
- General outdoor lighting
- Medical industry
- Telecom industry
What Are The Mechanical Properties Of Cree LED PCB?
The mechanical properties include:
This is a force that will bond the laminate and copper layers.
To have a low delamination time, you need a high peel strength.
This is the capability of the material laminate to bend or flex and not fracture or crack.
Besides, flexural strength is vital in flexible Cree LED PCBs.
This is the duration layers within Cree LED PCBs will take to delaminate when you apply external forces.
A high delamination time means the Cree LED PCB will have high durability.
What Does Optical Control Factor Mean In Cree LED PCB?
This is a concept in directional lighting usages like roadways, displays, and indoor spotlights.
Optical control factor means the following:
- Concentrating lumens on a target
- Concentrating lumens across long distances
- Spreading lumens on a target plane
- Spreading lumens on a roadway surface
The optical control factor is a metric in LEDs to measure how effective Cree LED PCBs are in a package relating to directional lighting.
It employs the concept of lumen density or luminous emittance that assists in understanding how light output and size relate.
The concept says it is simple to operate smaller sources than larger sources.
What Are Some Storage And Handling Techniques For Cree LED PCB?
It is important to store Cree LED PCBs in the manufacturer’s package to reduce unwanted contact and contamination.
Some handling techniques entail:
- Handle them in clean environments
- Avoid touching the lens of the Cree LED PCB except when using pick and place nozzle
- Place foreign material out of the lens of Cree LED PCBs
- Assembling Cree LED PCBs should be in an environment free from contact from foreign matter
- Use dry air or wipe the board with a lint-free swab once you dip in isopropyl alcohol
What Are Some Mechanical Considerations For Cree LED PCB?
The LEDs are reflow soldered on the Cree LED PCB which attaches to heat sinks.
Discrete wires should provide power to the LEDs.
Maintain thermal performance by placing thermal interface materials between Cree LED PCB and heat sinks.
Pick And Place
Always use pick and place to remove LEDs from reel package and factory tape for Cree LED PCBs.
Board Layout Guidelines
Consult your manufacturer to know the tolerance for single-layer Cree LED PCB as it varies between the manufacturers.
Avoid touching the lens other than when using pick and place nozzles when handling LEDs for Cree LED PCBs.
The reliability of solder joints between LEDs and Cree LED PCB affects the performance of the lighting system.
To avoid bad solder-joint failures, use the following:
- Recommended solder-pad layouts
- Suitable solder paste
- Good solder-reflow profiles
Avoid Mechanical Damage
No tools should contact the lens of the Cree LED PCBs as it can damage the LED.
Prevent the Cree LED PCB from the following as it bends or flexes:
- Overtightening screws
- Uneven heat sink surface
- Bending during reflow soldering
- Mishandling the assembly process
Stencil Printing Guidelines
The area ration calculation should be 0.66 or more when you divide stencil aperture opening by the area of the aperture sidewalls
At 0.5 mm pitch, you will have 3% optical loss in such an arrangement on the Cree LED PCB.
The optical loss will be 1% at 1 mm pitch.
Avoid shadowing by placing luminaire parts out of the light part within Cree LED PCBs.
What Are The Electrical Considerations For Cree LED PCB?
This entails using the following:
- Series array
- Parallel array
- Series-parallel array
This will happen when LEDs on Cree LED PCBs experience a current surplus that the maximum recommended value.
Ensure to add electrical overstress protection to the luminaries that do not incorporate onboard power supply.
Also, you can prevent electrical overstress during assembly through:
- Connecting metal tables to standard ground points
- EDS table and floor mats
- Using anti-static wrist straps
What Is The Chemical Compatibility Of Cree LED PCB?
Consulting the manufacturer’s chemical compatibility application will show you suitable chemicals, coatings, harmful chemicals, and materials to use or avoid.
What Are Some Electrical Properties Of Cree LED PCB?
The electrical properties include:
Prevent material loss by maintaining constant dielectric loss tangent and dielectric constant within the suitable ranges due to electric shocks.
Prevent exposing Cree LED PCBs to erratic electricity flow by considering volume resistivity and surface resistivity to an electric charge.
It illustrates the strength of the Cree LED PCB against electrical breakdown in the Z-direction.
Besides, make sure electrical strength is high.
What Are The Optical Considerations Of Cree LED PCB?
LEDs in Cree LED PCBs have Lambertian light distribution with the optical and mechanical center being similar.
Arranging the LEDs close together in Cree LED PCBs will lead to an optical loss such as optical crosstalk.
Here, you will consider the materials and array optics of Cree LED PCBs.
The small size of the LEDs in Cree LED PCBs works well when it comes to color mixing.
What Should You Do To Maximize The Performance Of Cree LED PCB?
The following practices will enhance the performance of Cree LED PCBs:
- Avoid touching the lens on Cree LED PCBs
- Apply optical grade plastic for the lens you use on the board
- Work in a clean environment free from contaminants that may damage the Cree LED PCB
- Wear clean and lint-free gloves when handling the LEDs
- Operate the Cree LED PCB within its functional limits
- Apply TIM between the heat sink and the Cree LED PCB
How Will You Know If The LED Light Uses Cree LED PCB?
Cree LED PCBs have a cathode design that uses squares with parallel lines that divide the surrounding area equally in rectangles.
This will form negative planes and not points which assist in identifying the Cree LED PCB.
Some other ways include:
- The boards are finely handcrafted, with a clean solder joint
- Optical lenses have high pellucidity and refractivity, with a smooth and glossy appearance
- The silicone cathode is unique
What Are The Thermal Properties Of Cree LED PCB?
Glass transition Temperature [Tg]
When you expose Cree LED PCB substrates to specific temperature ranges, they soften then harden.
Cree LED PCB laminates will expand when you expose them to a certain temperature.
Select laminates with low thermal expansion to minimize the change in dimension and thermal failure.
Ensure thermal conductivity is high to enable suitable heat distribution on the layers of materials.
The substrate materials of Cree LED PCBs will decompose when you expose them to a temperature beyond a specific threshold.
For this reason, stay clean from reaching the decomposition temperature.
What Are The Types Of Cree LED PCB?
There are various types of Cree LED PCBs depending on the manufacturing specifications, usage, and materials.
The most popular types of Cree LED PCBs include:
Flexible Cree LED PCB
This has materials that you can twist or bend in various directions.
It can come in a single, double, or multilayer format.
Besides, it is somehow costly to print but has more benefits than rigid Cree LED PCB.
Rigid Cree LED PCB
This type is stiff and not flexible since it uses a solid material during its manufacture.
Hybrid Cree LED PCB
This has non-thermal materials together with a metallic base.
It mostly has aluminum substrates with FR4 binding.
Besides, hybrid Cree LED PCBs efficiently emit heat.
Also, they are strong and affordable than rigid aluminum Cree LED PCBs.
However, you cannot bend it since it lacks flexibility.
Multi-layer Cree LED PCB
This type has three or more layers and the copper-plated holes interconnect the layers.
It may contain between 4 and 50 conductive layers.
Besides, you will use special glue and insulators between the layers.
The insulators prevent the layers from excessive heat.
Single-layer Cree LED PCB
This has one substrate layer with one side containing a conductive metal layer such as copper.
It is simple and easy to manufacture, hence cost-effective.
What Are The Common Materials That Make Cree LED PCB?
Some of the most common PCB materials include:
This is a common material that uses glass and epoxy to make the base.
It is also relatively inefficient at heat transfer.
This material is less durable hence not costly to manufacture.
Cree LED PCBs with metal cores are efficient at dissipating heat.
The base of the board will have a metal core such as copper or aluminum.
The metals will improve the insulation and thermal conductivity of the Cree LED PCB.
What Issues And Solutions Will You Encounter During Assembly Of Cree LED PCB?
Cree LED PCBs produce more heat thus traditional means will not cool it efficiently hence, can damage connective parts.
Use metal cores to increase the heat dissipation rate such as aluminum.
Poor soldering will affect the efficiency of the Cree LED PCB.
Consider the following factors when welding the parts:
- Carefully make solder connection to avoid short circuits
- Ensure the parts do not lift when soldering
- Use clean solder bits to achieve proper joints
- Begin by soldering smaller then proceed to larger components
The material you use will enhance or bury the entire system since wrongly placing the material will ruin the functionality of the board.
Solve this by using flex, customized, or rigid boards from renowned suppliers.
Cree LED PCBs produce heat when operating hence, using aluminum bases has its benefits such as:
- Increase the stability of the board
- Aluminum is strong and durable thus can handle high temperature
- Longer operating time
- Suitable heat dissipation
When customizing small and thin Cree LED PCBs, use embedded Cree LED PCBs.
The benefits of embedded Cree LED PCBs include:
- Dust and moisture resistant
- Color, size, and light intensity variation
- Lower backlight
Here, you can have single point, surface mount, and integrated systems.
Some benefits are the light is optimized, added value, adding new designs.
The limitations entail having expiry dates, difficult to replace, lacks a solid warranty.
How Does Cree LED PCB And COB LED PCB Compare?
Cree LED PCBs include green And blue LED chips that have enhanced luminosity levels.
Besides, Cree LED PCBs are common in backlighting, electronic signals, signs, and general lighting.
COB LED PCBs are larger since the entire panel has light-emitting diodes.
Cree LED PCBs produce less heat than COB LED PCBs.
cob led pcb
COB LED PCB experience a hard time dispersing heat than Cree LED PCB.
Cree LED PCBs have a longer lifespan than COB LED PCBs.
What Are The Chemical Properties Of Cree LED PCB?
This type of resistance is vital if you know Cree LED PCBs will experience heated environments and applications.
Methyl Chlorine Resistance [MCR]
The chemical tolerance of Cree LED PCB laminate is high when the laminate has high resistance against methyl chlorine.
This means high chemical absorption of the laminate material.
The moisture absorption enhances delamination time for the material laminate.
When a laminate material has a low moisture absorption rate, the material will have high resistance against delamination.
What Should You Consider When Designing Cree LED PCB?
- Cree LED PCB design
- Material choice
- Manufacturing process and criteria
How Does CEM And FR-4 Cree LED PCB Compare?
Both these materials meet the UL94-V0 level flammability.
FR-4 is less vulnerable than CEM [Composite Epoxy Material] hence cost less during production.
What Are Some Surface Finish For Cree LED PCB?
PCB surface finishes you can perform include:
- ENEPIG [Electroless Nickel Electroless Palladium Immersion Gold]
- Immersion Silver [IAg]
- Hot Air Solder Leveling [HASL]
- Lead-Free HASL
- OSP [Organic Solderability Preservatives]
- Electroless Nickel Immersion Gold [ENIG]
- Immersion Tin [ISn]
What Are The Available Colors For Cree LED PCB?
Cree LED PCBs can come in colors such as:
What Factors Affect The Color For Cree LED PCB
- Cost performance as the color green is cheaper than other colors
- Functional differences even though any solder masks color will coat the Cree LED PCB parts
- Possible problems during printing as low ink viscosity adhere poorly on the PCB
What Factors Affect The Cost Of Cree LED PCB?
This depends on the geographical location of the manufacturer, for instance, China offers cheap labor than North America.
A faster deliverable leads to a higher cost.
This happens when the board includes LEDs that you will assemble and pack.
When you purchase several Cree LED PCBs once, you will pay less.
Features Of Cree PCB
PCB features with more features and performance capability will cost more.
For instance, a multi-layer Cree LED PCB will cost more than single layer Cree PCB.
What Criteria Should You Consider When Selecting Cree LED PCB Manufacturer?
These criteria include:
- Customer service
- PCB design support
- Timely delivery
- PCB design support
- Advanced manufacturing
- Meeting requirements
Which Are Some Design Software For Cree LED PCB?
Some PCB design software you can use include:
- Osmond PCB
What Quality Standards Should Cree LED PCB Adhere To?
Complying with quality standards set by international, regional, and local authorities is vital.
This is because it ensures the Cree LED PCB is functional and safe for use.
These quality standards include:
- UL certification
- CE mark of quality
- IPC assembly standard
- Restriction of Hazardous Substances [RoHS]
- MIL certification
- PCQR 2 certification
- AS9100 standard
- ITAR certification
Other related resources:
For all your Cree LED PCB needs, contact Venture now.