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LED Light Strips


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IP Rating


High Efficiency Series, SMD3528, SMD2835, ...

Understanding IP Rating

LED Strips IP Rating

IP (Ingress Protection) ratings are standardized codes that indicate the level of protection an electrical device has against solids and liquids. The IP rating system is crucial for determining the suitability of LED strips for different environments and applications.

How IP Ratings Work:

An IP rating consists of two digits. The first digit represents protection against solids (e.g., dust), while the second digit represents protection against liquids (e.g., water). The higher the number, the greater the level of protection.

Common IP Ratings for LED Strips and Their Features:

  1. IP20 LED Strips

    • Features: Minimal protection against solids and no protection against liquids.

    • Application: Suitable for indoor use where the LED strip is not exposed to dust, moisture, or physical contact. Ideal for under-cabinet lighting, accent lighting, and dry areas.

  2. IP33 LED Strips

    • Features: Limited protection against dust and water sprays at an angle up to 60 degrees.

    • Application: Used in slightly more challenging indoor environments where there might be occasional exposure to dust or water splashes, such as in living rooms or offices.

  3. IP44 LED Strips

    • Features: Protected against solid objects over 1mm and splashing water from any direction.

    • Application: Suitable for bathrooms, kitchens, and other indoor areas where humidity or water splashes are a concern.

  4. IP65 LED Strips

    • Features: Dust-tight and protected against water jets from any angle.

    • Application: Suitable for outdoor use in areas exposed to moderate water jets, such as patios, gardens, and pathways. Also ideal for indoor applications in wet environments like bathrooms.

  5. IP67 LED Strips

    • Features: Dust-tight and protected against temporary immersion in water up to 1 meter for 30 minutes.

    • Application: Ideal for areas exposed to heavy splashing or temporary submersion, such as pool areas, bathrooms with high moisture, and outdoor applications with significant exposure to rain.

  6. IP68 LED Strips

    • Features: Dust-tight and protected against continuous immersion in water beyond 1 meter.

    • Application: Suitable for underwater installations, such as fountains, swimming pools, and ponds, as well as in harsh outdoor environments.

Choosing the Right IP Rating for Your Application:

Selecting the correct IP rating for your LED strip lights depends on the environment where they will be installed:

  • Indoor Dry Areas: IP20 or IP33

  • Indoor Wet Areas: IP44 or IP65

  • Outdoor Exposed Areas: IP65 or higher

  • Submersible Applications: IP67 or IP68

By understanding IP ratings, you can ensure that your LED strip lights are appropriately protected for their intended use, enhancing their durability and performance in various conditions.

Understanding LED Binning

LED Binning
LED Binning.jpg

This is explanation to cover the key points about LED encapsulation, binning, color uniformity, and relevant standards, providing a comprehensive understanding of how these factors contribute to superior LED lighting quality.

Understanding LED Encapsulation and Binning for Superior Lighting Quality

LED Encapsulation and Its Importance

During the LED encapsulation process, LEDs are sealed within a protective material to enhance their durability and performance. This process is critical for ensuring that the LEDs can withstand various environmental factors while maintaining their optical properties.

Binning: Ensuring Consistency and Quality

In the context of LEDs, "binning" refers to the method of sorting LEDs based on specific performance characteristics such as color, brightness, and voltage. This sorting is essential for ensuring that LEDs used in a single application have consistent properties, resulting in uniform lighting.

The Role of Smaller Bins in LED Quality

  • Smaller Bins for Tighter Control: Smaller bins mean that the range of variation within each bin is very narrow. This tight control helps in maintaining excellent color uniformity and consistent brightness across all LEDs.

  • Color Uniformity: By sorting LEDs into smaller bins, manufacturers can ensure that all LEDs in a batch will produce light of very similar color. This uniformity is crucial for applications where consistent lighting appearance is necessary, such as in architectural lighting or display systems.

SDCM: Measuring Color Variation

  • SDCM (Standard Deviation of Color Matching): SDCM is a unit that measures the color consistency of LEDs. It indicates how much the color of the LED deviates from a target color point.

    • 3 SDCM: Indicates very tight color control with minimal variation. LEDs within 3 SDCM appear almost identical to the human eye.

    • 5 SDCM: Allows slightly more variation, but still maintains good color uniformity.

Standards for Color Consistency

  • ErP Standard (Energy-related Products Directive): A European regulation that sets requirements for energy efficiency and other environmental aspects of products, including color consistency of LEDs.

  • ANSI Standard (American National Standards Institute): In the context of LEDs, ANSI standards specify acceptable ranges for color consistency, ensuring that LEDs meet certain quality criteria.

Why These Factors Matter

  • Color Consistency: Ensures that all LEDs in a lighting installation appear the same, which is crucial for aesthetic and functional reasons.

  • Energy Efficiency and Quality: Adhering to standards like ErP and ANSI ensures that LEDs not only provide consistent color but also meet high standards of energy efficiency and overall quality.


During the LED encapsulation process, the implementation of binning helps maximize the effective usage of LEDs by ensuring tight control over color variation and maintaining excellent color uniformity. By using smaller bins and adhering to standards such as 3 SDCM or 5 SDCM, ErP, and ANSI, manufacturers can produce LEDs that offer superior performance and reliability, ensuring high-quality lighting solutions for a wide range of applications.

Understanding Color Rendering Index (CRI)

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Understanding Color Rendering Index (CRI) and Its Importance in LED Lighting

What is Ra (General CRI)?

Ra, commonly known as the general Color Rendering Index (CRI), is an average value derived from the CRI values of the first eight standard color samples (R1-R8). It measures how accurately a light source can reproduce the colors of various objects compared to a natural light source.

  • Calculation: Ra is calculated as the average of R1 to R8:

Importance of High CRI in LED Lighting

  • High Ra Values: A higher Ra value indicates better color rendering, meaning the colors under the light source appear more natural and vibrant. An Ra value of 95+ is considered excellent and is recommended when accurate color reproduction is crucial.

  • Low Ra Values: A lower Ra value means the light source may cause colors to appear distorted or unnatural. This can be problematic in applications where true color representation is essential, such as in retail or art galleries.

Special Consideration for R9 and Ra(9-12)

  • R9 (Saturated Red): R9 represents the ability of a light source to reproduce saturated red colors. It is not included in the general Ra calculation but is crucial for applications where accurate rendering of red hues is important, such as in medical lighting, retail displays, and art galleries. Importantly, for commercial lighting applications, the R9 value should not be negative, as poor red rendering can affect the appearance of various objects and materials.

  • Ra(9-12) (Red, Yellow, Green, Blue): This extended CRI calculation includes R9 to R12, which represent saturated colors: red (R9), yellow (R10), green (R11), and blue (R12). Evaluating these additional colors provides a more comprehensive understanding of the light source's color rendering capabilities, especially in environments where precise color discrimination is vital.

Why Focus Beyond General Ra?

  • Holistic Color Quality: While Ra provides a general measure of color rendering, focusing solely on Ra can overlook the performance of specific colors like red (R9) and other saturated hues. These colors play a significant role in the overall perception of color quality and realism.

  • Application-Specific Requirements: Different applications may require attention to specific CRI values. For instance, in commercial lighting, accurately rendering red hues (R9) can enhance the appearance of merchandise, making it more appealing to customers.



When designing high CRI LED lighting, it's essential to consider both the general Ra and the specific rendering of saturated colors like R9 and the extended Ra(9-12). A higher Ra indicates better overall color rendering, making colors appear more natural and vibrant. For critical applications requiring precise color accuracy, such as commercial lighting, an Ra95+ is recommended, and the R9 value must not be negative to ensure the highest quality of color reproduction. By focusing on these detailed aspects of CRI, lighting designers can ensure that their LED products provide superior color quality, enhancing visual appeal and functionality across various applications.

This explanation by NELUX provides a thorough understanding of CRI, its components, and its significance in ensuring high-quality LED lighting.

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Understanding TM-30-15:


A New Standard for Measuring Color Rendering

What is TM-30-15?

TM-30-15 is a modern and improved method developed by the Illuminating Engineering Society (IES) to measure how well white light sources render colors.

How is TM-30-15 Different from CRI?

  • Color Samples:

    • CRI (Color Rendering Index): Uses 8 to 15 color samples to evaluate color rendering.

    • TM-30-15: Uses 99 color samples, providing a much broader and more accurate representation of the colors we encounter in the real world.

Key Metric: Fidelity Index (Rf)

  • Rf (Fidelity Index): A new metric introduced in TM-30-15. It measures how faithfully a light source reproduces colors compared to a reference light.

  • Best Score: Like CRI, the highest possible Rf score is 100. The closer the Rf score is to 100, the more accurately the light source renders colors.

Why TM-30-15 is Better?

  • More Accurate: With 99 color samples, TM-30-15 provides a more reliable and detailed assessment of a light source's color rendering ability.

  • Real-World Relevance: The larger number of samples means the metric is more representative of the colors we actually see in everyday life, making it a better predictor of how a light source will perform in real-world settings.


TM-30-15, with its Fidelity Index (Rf), offers a more comprehensive and accurate way to evaluate the color rendering of white light sources compared to the traditional CRI. By using 99 color samples, it ensures that the colors rendered by the light source are closer to what we see in reality, making it a superior tool for assessing lighting quality.

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