LED Chip, Lamp or Luminaire


Seoul Semiconductor

Verify ID:


Expiration date:

May 14, 2021 - May 13, 2024

Verification Mark

Product Information

SunLike natural sun spectrum LEDs are the world’s first LEDs to produce light that closely matches the spectrum of natural sunlight, delivering human-centric lighting.
The light sources with SunLike Series LEDs more accurately show the color of objects as they would appear in natural sunlight. It is optimized to natural light spectra and color rendition Rating “Diamond” based on IES TM-30-20 Fidelity intent. It delivers considerable benefits of significant vivid color, detail contrast, and homogeneous quality of light.
SunLike has been recognized as an innovative technology that produces light that closely matches the spectrum of natural sunlight by a total of ten global lighting awards held in Korea, Europe, China, and the US. 

* This information was provided by Seoul Semiconductor and may contain additional information outside the scope of this Claim Verification.

Applicable To:

SunLike: STW9C2PB-S, STW9C2SB-S, STWSA32E-E0 (A = 6500K, C=5000K, E=4000K, G=3000K, H=2700K)

Marketing Claim Verified by UL Solutions

Color Rendition Rating DIAMOND based on IES TM-30-20 Fidelity Intent

Verification Method

The product is measured with an integrating sphere according to ANSI/IES LM-79, Approved Method: Optical And Electrical Measurements Of Solid-State Lighting Products (LED and OLED) and the color rendition calculation is based on ANSI/IES TM-30-20, IES Method For Evaluating Light Source Color Rendition. The following criteria is used to rate the performance, and comes from the Fidelity design intent of TM-30-20: Diamond: Rf ≥ 95 Platinum: Rf ≥ 90, Rf,h1 ≥ 90 Gold: Rf ≥ 85, Rf,h1 ≥ 85

About the Company

Seoul Semiconductor is the world’s second-largest global LED manufacturer, a ranking excluding the captive market, and has more than 14,000 patents. Based on a differentiated product portfolio, Seoul offers a wide range of technologies, and mass produces innovative LED products for indoor and outdoor lighting, automotive, IT products, such as mobile phone, computer displays, and other applications, as well as the UV area. The company’s world’s first development and mass production products are becoming the LED industry standard and leading the global market with a package-free LED, WICOP; a high-voltage AC-driven LED, Acrich; an LED with 10X the output of a conventional LED, nPola; a cutting edge ultraviolet clean technology LED, Violeds; an all direction light emitting technology, filament LED; a natural sun spectrum LED, SunLike; and more. For more information, please visit www.seoulsemicon.com/en.

What is UL Verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.