250 lumen @ 1a, single die

[justDIY]

Another goodie from Edison:

Edison Opto, a Taiwan based high-power LEDs packaging manufacturer, has launched its latest addition, KLC8 series, to the Edixeon high power LED family.The new series bring the industry's brightest single-chip LED with 250 lumens at a drive current of 1A.


It also delivers unprecedented high luminous efficacy of 100 lumens/watt at 350mA, with a lifespan exceeds 50,000 hours.

It seems their exclusive distributor is some outfit named neotronic out of Spain.  Has anyone heard about availability of these in the States?

http://www.ledsmagazine.com/press/14998

Package looks real similar to the luxeon emitters.

[minster9]

Go to LED Supply site. At bottom of page,click on LEDS,Luxeon,etc( top middle of the six categories). Click on Lamina on the list shown,then click on the Atlas star. I bought one about a couple months ago,sounds identical to what you're decribing. I'm running mine in a worklamp(see "wish Rebels weren't so tiny") at 780ma,7.35volts. You can't look at it directly,you WILL see spots! I won't qoute any prices,but they're the only site I've seen them. Most light for the money I've seen yet,but you must use a heat sink! They also sell the heatsink made for it separately;it's drilled & threaded (3 x 2-56 holes),but half as much as the Atlas star. Check Lamina's webpage,they may have other distributors over here. Still thinkin' about the rebels,but I think I might wait awhile before diving into those. They still have a backlog of 10 weeks for the REALLY bright stuff. At .120" x .180",they're gonna be a challenge for us amateur LED hobbyists,particularly with heat sink application.

[justDIY]

looking at the datasheet for the lamina product, I hazard a guess they're using multiple die to achieve their 200 lumen output ... the high forward voltage is a dead give away.

http://www.edison-opto.com.tw/product_lighting_detail_9_1.asp

looking at edison's site, I don't see the 250lm product listed, but their brightest listed single-die product produces 210lm at 1a with 3.7 volts.

I'm wondering if I can swap out the 'wimpy' k2 in an led flashlight for one of these edisons.   more than 2x the lumens for the same power input.  I think the edison diode is a bit too big, more the size of the older luxeon 1 & 3 instead of the smaller k2.

[minster9]

  So,okay,the unit your talking about is much more efficient,but for about the same amount of light,which is more expensive? And they're sold in Spain? That would be expensive shipping,wouldn't it?

[cadstarsucks]

looking at the datasheet for the lamina product, I hazard a guess they're using multiple die to achieve their 200 lumen output ... the high forward voltage is a dead give away.

http://www.edison-opto.com.tw/product_lighting_detail_9_1.asp

looking at edison's site, I don't see the 250lm product listed, but their brightest listed single-die product produces 210lm at 1a with 3.7 volts.

I'm wondering if I can swap out the 'wimpy' k2 in an led flashlight for one of these edisons.   more than 2x the lumens for the same power input.  I think the edison diode is a bit too big, more the size of the older luxeon 1 & 3 instead of the smaller k2.

Ummm .... guys, Edison is VERY deceptive with specmanship.

This is the one they brag about 250Lm.  I looked it up when they came out with it.  They brag about 250 lm which looks about right for a high bin at an amp or so in  a photoflash app.

Their lumen spec is at 25 deg C JUNCTION.  At 34 C/W (their data sheet app inf for having the part securely soldered to a 2x2" PCB) at 700mA for an average of 2.5W at 50C (120 deg in summer) gives 50+2.5x34=135C junction ... Refereing back to their data sheet that gives an expected LED lifetime of 8000 HRS.  While I do not see it in this data sheet the rebel shows  75% at 135C.  That puts the practical limit for the EDEW-KLC8-B3 group W at 2.5W 128lm and 8000 hrs on a 2.5x2.5" PCB.

If we apply the same procedure to the Rebel, (I know, it's not here yet) we get 19.1 C/W ( the rebel is rated as 25 C at the pad ) 145 lm at 700mA for 2.5W.  50+19.1x2.5=98C the Luxeon site gives reliability information that list 60,000hrs at 130C at 700mA with 145x.85=123lm.  A bit of a difference there.

Dan