New Middle Power LEDs form Nichia, 757 series updated

Nichia has updated the leading middle power LED product range with versions with even better performance.

The 757 series are the highest performing, most reliable middle power LEDs available today, with L70 lifetime up to three times longer than the best middle power LED the competition has to offer.

Nichia’s 757 series with their small-die LED package with proprietary thermoset composite material delivers efficacy and value beyond current high-power LED capabilities and performance above other commercially available mid-power LEDs, which regularly demonstrate rapid lumen depreciation and big color shifts over short periods of time.

• Primary mid-power vs. high-power design advantages consist of:
• Economies of scale that improve the total cost of solutions;
• Manufacturing yields as multiple small dies drive higher yields and lower costs;
• Design flexibility enabled by more reliable color consistency and a larger variety of electrical configurations;
• Cutting-edge performance featuring a significant, up to 50 percent lower cost of light.

The updated 757 product line, with our offer for orders of one reel or more is as follows:

Nichia 757 LEDs as of 2015 (click on name for data sheet)	Led Color	Chromaticity Coordinate Typ(x,y)		Luminous Intensity	Luminous Flux	Ra	Forward Voltage VF(V)		Directivity	IF
		x	y	Typ(cd)	Typ(lm)	Min	Typ	Max	2θ ½	(mA)
NF2W757DR-V1	Cold White	0,344	0,355	47,2	138		6,32	7,1	120	150
	Cold White	0,344	0,355	46,1	135	70	6,32	7,1	120	150
	Cold White	0,344	0,355	44,4	131	80	6,32	7,1	120	150
	Cold White	0,344	0,355	34	103	90	6,32	7,1	120	150
NF2L757DR-V1	Warm White	0,41	0,39	41	122	70	6,32	7,1	120	150
	Warm White	0,41	0,39	39,8	119	80	6,32	7,1	120	150
	Warm White	0,41	0,39	31,9	93	90	6,32	7,1	120	150
NF2W757DR-V1M2	Cold White	0,336	0,335	27,3	79,2		6,32	7,1	120	150
NF2W757DR-V1M3	Cold White	0,344	0,355	27,6	80		6,32	7,1	120	150
NF2L757DR-V1M3	Warm White	0,41	0,39	25,1	72		6,32	7,1	120	150
NF2W757DR-V1U4	Cold White	0,344	0,355	38,5	118		24	28	120	37,5
	Cold White	0,344	0,355	37,7	115	70	24	28	120	37,5
	Cold White	0,344	0,355	36,6	111	80	24	28	120	37,5
	Cold White	0,344	0,355	30,5	89	90	24	28	120	37,5
NF2L757DR-V1U4	Warm White	0,41	0,39	35,5	107	70	24	28	120	37,5
	Warm White	0,41	0,39	34,1	102	80	24	28	120	37,5
	Warm White	0,41	0,39	28	80	90	24	28	120	37,5
NT2W757DR-V1	Cold White	0,344	0,355	24,2	74,6		6,05	6,8	120	75
	Cold White	0,344	0,355	23,7	72,7	70	6,05	6,8	120	75
	Cold White	0,344	0,355	22,9	70	80	6,05	6,8	120	75
	Cold White	0,344	0,355	18,7	56,2	90	6,05	6,8	120	75
NT2L757DR-V1	Warm White	0,41	0,39	21,8	66,1	70	6,05	6,8	120	75
	Warm White	0,41	0,39	21,4	64,5	80	6,05	6,8	120	75
	Warm White	0,41	0,39	17,5	51,1	90	6,05	6,8	120	75
NF2W757D-V1F1	Cold White	0,344	0,355	11,4	34,2	70	2,76	3,3	120	65
	Cold White	0,344	0,355	10,9	33,2	80	2,76	3,3	120	65
NF2L757D-V1F1	Warm White	0,41	0,39	10,7	32,1	70	2,76	3,3	120	65
	Warm White	0,41	0,39	10,3	31,1	80	2,76	3,3	120	65
NFSW757D-V1	Cold White	0,344	0,355	11,6	34,1		2,88	3,3	120	65
	Cold White	0,344	0,355	11,3	33,2	70	2,88	3,3	120	65
	Cold White	0,344	0,355	11,1	32,7	80	2,88	3,3	120	65
	Cold White	0,344	0,355	8,5	25,7	90	2,88	3,3	120	65
NFSL757D-V1	Warm White	0,41	0,39	10,6	31	70	2,88	3,3	120	65
	Warm White	0,41	0,39	10,1	29,5	80	2,88	3,3	120	65
	Warm White	0,41	0,39	7,9	23,5	90	2,88	3,3	120	65
NFSW757D-V1M2	Cold White	0,336	0,335	6,6	19,2		2,88	3,3	120	65
NFSW757D-V1M3	Cold White	0,344	0,355	6,7	19,4		2,88	3,3	120	65
NFSL757D-V1M3	Warm White	0,41	0,39	6	17,3		2,88	3,3	120	65
NTSW757D-V1	Cold White	0,344	0,355	10,9	33		3	3,5	120	65
	Cold White	0,344	0,355	10,6	32,2	70	3	3,5	120	65
	Cold White	0,344	0,355	10,3	31	80	3	3,5	120	65
	Cold White	0,344	0,355	8,4	24,9	90	3	3,5	120	65
NTSL757D-V1	Warm White	0,41	0,39	10	30	70	3	3,5	120	65
	Warm White	0,41	0,39	9,5	28,6	80	3	3,5	120	65
	Warm White	0,41	0,39	7,7	22,6	90	3	3,5	120	65

For orders and inquires please contact us.

Invention of blue LEDs receives physics Nobel

Nobel Prize For Physics 2014: Isamu Akasaki, Hiroshi Amano And Shuji Nakamura Honored For Blue LED Invention

7 October 2014. Isamu Akasaki, Hiroshi Amano and Shuji Nakamura
are rewarded the Nobel Prize For Physics for inventing a new energy- efficient and environment-friendly light source – the blue light-emitting diode (LED). In the spirit of Alfred Nobel, the Prize awards an invention of greatest benefit to mankind; by using blue LEDs, white light can be created in a new way. With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources.

New light to illuminate the world

This year’s Nobel Laureates are rewarded for having invented a new energy-efficient and environment-friendly light source – the blue light-emitting diode (LED). In the spirit of Alfred Nobel the Prize rewards an invention of greatest benefit to mankind; using blue LEDs, white light can be created in a new way. With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources.

When Isamu Akasaki, Hiroshi Amano and Shuji Nakamura produced bright blue light beams from their semi-conductors in the early 1990s, they triggered a funda-mental transformation of lighting technology. Red and green diodes had been around for a long time but without blue light, white lamps could not be created. Despite considerable efforts, both in the scientific community and in industry, the blue LED had remained a challenge for three decades.

They succeeded where everyone else had failed. Akasaki worked together with Amano at the University of Nagoya, while Nakamura was employed at Nichia Chemicals, a small company in Tokushima. 

Their inventions were revolutionary. Incandescent light bulbs lit the 20th century; the 21st century will be lit by LED lamps.

White LED lamps emit a bright white light, are long-lasting and energy-efficient. They are constantly improved, getting more efficient with higher luminous flux (measured in lumen) per unit electrical input power (measured in watt). The most recent record is just over 300 lm/W, which can be compared to 16 for regular light bulbs and close to 70 for fluorescent lamps. As about one fourth of world electricity consumption is used for lighting purposes, the LEDs contribute to saving the Earth’s resources. Materials consumption is also diminished as LEDs last up to 100,000 hours, compared to 1,000 for incandescent bulbs and 10,000 hours for fluorescent lights.

The LED lamp holds great promise for increasing the quality of life for over 1.5 billion people around the world who lack access to electricity grids: due to low power requirements it can be powered by cheap local solar power.
The invention of the blue LED is just twenty years old, but it has already contributed to create white light in an entirely new manner to the benefit of us all.

Nichia LEDs can also be purchased from LedRise.com

Aquarium LED Lighting Shopping List

For aquarium lighting you can find at LedRise: high power LEDs in emitter form, placed on a PCB, LED strips with up to 6720 lumen per meter,  lens,  drivers and cooling accessories. (see below)

To obtain color temperatures of 10000K to 20000K read our LED color mixing guide.

If you are a DIY enthusiast or manufacturer and need assistance with your project, do not hesitate to contact us.

	High Power LEDs from Cree, Nichia, Osram, Lumileds Main colors used:  White and Royal Blue Lens from: Ledil , Carclo
	Power LED Strip with Cree, Nichia or Osram LEDs (12 LEDs in a divible LED strip, White 4000K and Royal Blue available. Can use LENS)
	Maxline Power LED Strip with Nichia LEDs (up to 6720 lumens per meter of pure white 4000K LED light)
	LED Drivers: 350mA, 700mA, 1050mA, 1400mA, 1750mA and more
	Adjustable LED Drivers with PC programming
	4 Channel LED dimmer
	LED Heatsink

White - Royal Blue LED light ratio for color temperatures of 10000K, 12000K, 14000K, 16000K and 20000K

A number of lighting applications pose a challenge for white LEDs because of the color temperature required.  While most white LEDs on the market have a color temperature in the 2700K-6500K range, applications such as aquarium lighting, ask for color temperatures of at least 10000K and sometimes as high as 20000K.

Aquarium LED lighting with light of strong blue tint (color temperature over 10000K)

 To obtain with LEDs white color of temperature higher than 10000K we need to use a combination of white and royal blue LEDs. The table below will show the ratio between royal blue LED spectral power (in mW) and white 4000K LED luminous flux (in lumen) needed to obtain color temperatures of 10000K, 12000K, 14000K, 16000K and 20000K.

Desired color temperature	Royal Blue 450nm LED (mW)	White 4000K LED (lumens)	Royal Blue 455nm LED (mW)	White 4000K LED (lumens)
10000K	1	0,89	0,92	0,92
12000K	1	0,8	0,83	0,83
14000K	1	0,75	0,77	0,77
16000K	1	0,72	0,74	0,74
20000K	1	0,675	0,69	0,69

Explanation:

For a color temperature of 12000K for each mW of spectral power from a Royal Blue 450nm LED we need 0.8 lumen. If the Royal Blue LED has 455m we need 0.83 lumen.


Sample calculation with Cree XT-E 450nm Royal Blue LED and Cree XP-G 2 LED, which you can find at LedRise.

Desired color temperature	Royal Blue LED 450nm	White 4000K LED
10000K	One Cree XT-E 500mW at 350mA	Two Cree XP-G2 4000K at 600mA
12000K	One Cree XT-E 500mW at 350mA	Two Cree XP-G2 4000K at 525mA
14000K	One Cree XT-E 500mW at 350mA	Two Cree XP-G2 4000K at 500mA
16000K	One Cree XT-E 500mW at 350mA	Two Cree XP-G2 4000K at 475mA
20000K	One Cree XT-E 500mW at 350mA	Two Cree XP-G2 4000K at 425mA

You will need a programmable LED Driver for the white LEDs as the one you can find in our shop:

Programmable constant current source 350-2000 mA, 10-20W output CLSD-020

Programming box for constant current source KSQ CLSD-020

Disclaimer:

The values in this post are theoretical and where obtained using a Color Calculator Software from a major LED manufacturer.  Due to the limitations of LED binning and labeling the actual result in real applications might vary. 

If you want a calculation for other LED types please contact us.

The new LED Arrays for easy integration in light fixtures

We have expanded our offer of LED arrays in two different product lines: linear LED Arrays (L) and square LED Arrays (Q).

Smart Array are a high density row or cluster of high performance Nichia 757 LEDs placed on a PCB for easy installation. Luminous flux is up to 4000 lumens and the warranty is 3 years.

You can purchase them here:

Square LED Arrays
Linear LED Arrays

The sizes are the following:

Cheap LED lamps (spot lights or bulbs): what is under the hood

 Dangerous GU10 LED Spot Light is Cheap and Bright but could Kill You - Seriously

A very interesting video about a low cost GU10 LED bulb, a very common occurance on website like e-bay or alibaba.

Beyond the well known low lifetime or lumen loss, cheap LED lamps can be very dangerous for people or property:




This is why at LedRise.com you find only LED lamps from well known manufacturers like Osram, Philips, Toshiba, Samsung and so on.

LED Strip Buying Guide

This is a brief LED Strip Buying Guide.  For assistance in choosing the best LED strip please contact us.


LED strips are most commonly used to create lines of light, a very modern approach to lighting.  From the living room, to shops, office spaces, entire building facades or bridges, all can be lit with lines of light.

Having such a wide application range, LED strips are available in hundreds of configurations, with large differences in basic attributes as light produced, wattage, color temperature, lifetime, light quality, IP rating, flexibility of the LED line and much more. This confuses confuses most buyers.

A brief buying guide for LED Strips:

When you want to purchase a LED strip you first should think about the type of lighting you desire.  The most common types are:

• ambient light (self light, cove light, tv back light on the wall and so on)
• intense ambient light ( as above but with increased intensity for some common tasks as navigating a space, eating, conversation)
• general light (the light we need for most task in our home, shop or office)
• intense general light (also called task light, for reading, writing, office work, cooking or to draw attention to a certain area, object or architectural characteristic) 

After you decide on the type of lighting you need, when you search for LED strips you should look at the following three characteristics:

•  brightness per meter (luminous flux, measured in lumens)
•  actual LED lifetime (as opposed to claimed manufacturer lifetime. In brief, if the LED is not a known brand, actual lifetime is in the 1000-5000 hours range)  
• light quality, also called color rendering index, CRI or Ra in short

 Based on the type of lighting (ambient light, intense ambient light, general light, task light) the minimum values for the above three characteristics are:

LED Strips for ambient light 

Minimum Values of LED Strip for ambient light
Brightness per meter	100 lm/m
CRI (light quality)	60
Lifetime for infrequent use	1000 hours
Lifetime for daily use in the home	10.000 hours
Lifetime for daily use, commercial or business	30.000 hours

LED Strips for intense ambient light 

Minimum Values of LED Strip for intense ambient light
Brightness per meter	600 lm/m
CRI (light quality)	70
Lifetime for infrequent use	1000 hours
Lifetime for daily use in the home	10.000 hours
Lifetime for daily use, commercial or business	30.000 hours

LED Strips for general light

 

Minimum Values of LED Strip used for general light
Brightness per meter	1000 lm/m
CRI (light quality)	80
Lifetime for infrequent use	10.000 hours
Lifetime for daily use in the home	15.000 hours
Lifetime for daily use, commercial or business	30.000 hours

LED Strips for intense general light (task light)

Minimum Values of LED Strip used for intense general light
Brightness per meter	1500 lm/m
CRI (light quality)	80
Lifetime for infrequent use	10.000 hours
Lifetime for daily use in the home	15.000 hours
Lifetime for daily use, commercial or business	40.000 hours

You can find in our online shop strips for all of the above types of lighting.