White Light 5000k 90ra Led cob Chip 800W 1000W 1200W led manufacturer


High power with small LES (light-emitting size), perfect option for long range lighting;

Good heat dissipation: unique combination of Copper PCB&phosphor ceramic,guarantee the thermal performance;

Good reliability: resistance to force impact, temperature, humidity and PH change

Extremely low CCT optional; LM-80 Passed

Suitable for high power lighting fixtures, such as sports light, search light, TV&film light ect.

Product Detail


Item No.

Rated Power(W)

Forward Voltage Vf(V)

Rated Currency IF(mA)

Max Input currency(mA)


Color Temperature(K)

Efficiency Im/w

Based on 70ra

















Name Traditional silicone COB K-COB
Simple diagram  Traditional silicone COB COB Dual Heat Sinking Channel
Explanation The heat generated by the wafer could be radiating from the PCB only, and as the heat has not been conducted and would remain inside of silicone cake, it would reduce the LED efficiency&shorten its lifespan. The heat could be radiating from both PCB directly and laser ceramic surface by sapphire. This dual heatsinking structure allows us to make COB at a smaller size but with higher wattage and better reliability.

We separate two main heat source of LED chip and phosphor by dual heatsink channel design.                                                          

This design helps to reduce chip junction temperature effectively.                                                                                                                          

Thermal resistance model of KCOB

Thermal Resistance data comparison   The actual testing data is tested by equipment MicReD® T3Ster, 

as you can see, K-COB thermal resistance is just 72% of traditional COB.       

Thermal Resistance data comparison



*Size & Circuit is customizable based on the requirement

K-COB (Maximum power for single chip could reach 1600w)
K-COB LED arrays provide the industry’s best lumen density and efficacy for metal-based chip-on-board (COB) LEDs in industry-compatible footprints and LES sizes. This COB family features an innovative exclusive patent phosphor ceramic technology as well as dual heat-sink technology to deliver higher reliability and output than competing products. The K-COB LED arrays include 10 LEDs across three (9.8 mm, 14.5 mm and 22 mm) LES sizes with standard color options of 70, 80 and 90 CRI. Premium color options that include high fidelity (98 CRI) and specialty color points are available to deliver color quality without compromise in efficacy, lumen density, color consistency and reliability.

The K-COB Series is a comprehensive range of metal-based COBs available in various LES, CRI, CCT, efficacy, and drive current options. The heat could be radiating from both PCB directly and laser ceramic surface by sapphire.
This dual heatsinking structure allow us make COB at smaller size but higher wattage and better reliability.
The Phosphor ceramic is the high heat conductivity rate: 13.367W/m.k, 75 times of traditional phosphorus powder (YAG 05+sil1018), which ensures excellent lumen maintenance and color stability even in high lumen applications. Tight color binning ensures fixture-to-fixture uniformity. A 97 CRI (90 R9) version is available for color-critical applications.

Please contact send us an email to ask for more recommendations, help and advice for your lighting projects

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