Cree Application Note: CLD-AP268 REV 1 INTRODUCTION When operated in parallel strings, as is common in many linear LED designs, LEDs driven at relatively low currents (e.g., less than 20 mA for 3-V mid-power LEDs) will exhibit unacceptable light output and hue variations across the strings. These light output variations are caused by normal production [Read More]
Change Notices Latest Cree LED SMD LED End-of-Life Notification: Affected Product List: CLYBB-FKA Summary PCN Reference Number: CreeLED-PCN-5183: Summary: Description of the Change Cree LED is qualifying additional suppliers of the ESD diode for the affected LEDs. The maximum reverse voltage for the affected LEDs will change to 1V. PCN Reference Number: CreeLED-PCN-5159: Description of the [Read More]
The new Cree 5050 mid power K class led, due in production in Sept 2020 will be a 220 lumen per watt variant of the 5050 product range. Its a considerable jump in performance over existing 5050 plastic package leds and a big step forward when one considers the limits on most multi die mid [Read More]
Grow Room Design Plans: We get requested daily for led grow lights in terms related to using our products for growing and that is based typically on a specific product and how best to get optimum use for a certain space. In keeping with the open source nature of sharing, we have listed below many [Read More]
Cree has recently revamped the PCT(Product Characterisation Tool) now called PCT4 or Version 4. This is a significant upgrade in that it further goes deep into underlying key data about Cree leds that previously required additional calculation to get to data that customers need. As of this writing the Cree online version is 3, but [Read More]
Nature remains the teacher of all things in the natural world. The sun rises low across the horizon, produces light from the vertical at noon, and completes the arc to set once more on the horizon. Cannabis along with many species naturally shaped and formed its growth and structure to better collect light this way. [Read More]
From around mid 2015, the COB(Chip on Board), specifically starting with the Cree CXB3590, revolutionised grower view’s of Led Lights as a real alternative to the ubiquitous HPS/CMH grow light. While the powerful incandescent HPS light’s still prevail for the devoted HPS grower, the success of the COB in changing minds about what LED lights [Read More]
I get asked daily about the best way to light a room and the options today are more numerous than ever. As a starting point it is no longer unreasonable to begin from a place of efficiency and by that I mean umols/j, not lumens per watt. Your inputs in terms of power used for [Read More]
Nichia has recently announced the 757G-MT mid-power LEDs with white tuning from 2700K to 6500K enabled by two die integrated in the 3030 platform. Nichia tuneable White LED Nichia’s Tunable 757 receives rave reviews from industry leaders, including the coveted LpS Best Sustainability Technology Award. Tokushima, Japan – 4 October 2019: Nichia, the leader in [Read More]
COB LEDs are very cost effective light sources in LED lighting business. Lets examine this light source, so what exactly is COB? First of all, the abbreviation COB means Chip-on-Board. Cree COB topside, The yellow substance is phosphor, below the phosphor are blue led chip. When powered the blues chips excite the phosphor creating white [Read More]
