(This is Page 1 of the White LEDs section)
Nichia rectangular white LED (NSPWF50DS)
Received 12-24-07, tested 12-30-07
This is a newer model (~December 2007) Nichia NSPWF50DS flat (rectangular) white LED. It comes in a water-clear epoxy case and emits a fairly cool shade of white (est. 5,000K).
The LED has a dual-bond construction; and is Rank B2V (tint rank "B2", intensity rank "V").
Measures 1,590mcd at a drive current of 19.28mA.
Vf (forward voltage) is 2.845 volts.
Viewing angle is avertised at 115° x 125°
This is a very wide-angle LED, and if I've told you once, I've told you a billion times:
Wider viewing angles always, always, ALWAYS equal lower mcd values!!!!!!!!!
Spectrographic analysis of this LED.
Same as above; different spectrometer & software used.
Nichia 5mm white LED (NSPW500CS)
Received 12-24-07, tested 12-28-07
This is an "old new-model" (04-25-2005) Nichia NSPW500CS 5mm white LED. It comes in a water-clear epoxy case and emits a fairly cool shade of white (est. 5,000K).
The LED has a dual-bond construction; and is Rank BU (tint rank "B", intensity rank "U").
Measures 19,800mcd at a drive current of 19.28mA.
Vf (forward voltage) is 3.216 volts.
Viewing angle is avertised at 15°
Spectrographic analysis of this LED.
Nichia 5mm white LED (NSPW510DS)
Received 12-24-07, tested 12-25-07
This is a newer model (~December 2007) Nichia NSPW510DS 5mm white LED. It comes in a water-clear epoxy case and emits a fairly cool shade of white (est. 5,000K).
The LED has a dual-bond construction; and is Rank B2V (tint rank "B2", intensity rank "V").
Measures 7,530mcd at a drive current of 19.28mA.
Vf (forward voltage) is 2.053 volts. This is an unusually low Vf, as white LEDs go.
Viewing angle is avertised at 30°
This is a moderately wide-angle LED, and if I've told you once, I've told you a million times:
Wider viewing angles always, always, ALWAYS equal lower mcd values!!!!!!!!!
Spectrographic analysis of this LED.
LEDs International, white LED, L15WAW55
Received 02-20-07, tested 02-21-07
This is a 5mm round LED in a water-clear epoxy case. It produces a WIDE-ANGLE circular beam; the lens-end is noticeably shorter than the same part on regular 5mm LEDs.
The light's color temperature appears to be quite high; probably near 7,000°K, which is a cool, slightly bluish shade of white.
Measures 1,300mcd at a drive current of 19.28mA.
Viewing angle appears to be ~120°.
This is a wide-angle LED, and if I've told you once, I've told you 100 times:
Wider viewing angles always, always, ALWAYS equal lower mcd values!!!!!!!!!
Spectrographic analysis of this LED.
USB2000 spectrometer graciously donated by P.L.
10mm Warm White LED
Received & tested 02-07-07
This is a warm white LED that's being sold on Ebay, advertised as 85,000mcd with a viewing angle of 60°.
"85,000mcd with a 60° viewing angle"?
Horse puckey!
Horse puckey!!!
HORSE PUCKEY!!!!!!
Beam photograph at 12".
Measures 6,910mcd on a Meterman LM631 light meter.
Current for this measurement was 19.28mA.
The viewing angle appears to be ~25°.
Spectrographic analysis of this 10mm warm white LED.
USB2000 spectrometer graciously donated by P.L.
3W Luxeon Star Clone LED
Received 12-24-04, tested 02-06-07
I was sent one of these by a member of Candlepower Forums in late-2004, and I promptly lost it.
I found it today looking for some else though, so as they say, "better late than never".
This is a clone of the Luxeon Star III LED, right down to the hexagonal (six-sided) PCB they come mounted on.
The color is a nearly-pure white, with no unwanted tints.
Beam photograph at 12".
The viewing angle is too wide for me to take an intensity measurement with the instruments at my disposal.
The If was 352.4mA for this photograph and the spectrographic analysis directly below.
Spectrographic analysis of this LED.
USB2000 spectrometer graciously donated by P.L.
*** VERY IMPORTANT!!!***
These high-powered LEDs ***MUST*** be affixed to a heatsink if operated at anywhere near their rated forward current of 350mA!!! Failure to do so will cause the LED to rapidly overheat and burn out!!!
Cree XR-7090 Warm White LED (www.NebulaLighting.com
Received & tested 10-11-06
T.B. of Nebula Lighting sent two of these LEDs for me to test & add to this website. It comes in an SMD package with a domed epoxy lens. According to the letter I received with these LEDs, twenty to sixty of these LEDs are used in the Nebula lighting system.
The color is a slightly warmish-white, with no unwanted tints.
Beam photograph at 12".
Measures 30,700mcd at 350.7mA.
The viewing angle is 105°.
Remember, wider viewing angles always, always, ALWAYS equal lower intensity values.
Vf was measured at 3.727 volts at an If of 350.7mA.
Spectrographic analysis of this LED, when driven at 350.7mA.
USB2000 spectrometer graciously donated by P.L.
*** VERY IMPORTANT!!!***
These high-powered LEDs ***MUST*** be affixed to a heatsink if operated at anywhere near their rated forward current of 350mA!!! Failure to do so will cause the LED to rapidly overheat and burn out!!!
Superbrightleds # RL5-180030 5mm White LED
Received 09-26-06, tested 09-27-06
A fan of the website sent this LED along with several others. It comes in a water-clear 5mm epoxy body, and does not have gold-plated leads like the other LED I added to this website today.
The color is a very slightly cool white, with no unwanted tints.
Beam photograph at 12".
Measures 13,600mcd at 19.28mA.
Spectrographic analysis of this LED, when driven at 19.28mA.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
10mm white LED, part # (unknown)
(Rec'd & tested 07-12-06)
This is a 10mm white LED from Hong Kong. The advertised intensity at 20mA is 125,000mcd.
Intensity was measured at 33,500mcd at an If of 19.28mA.
This LED has an advertised viewing angle of 25°.
Vf (forward voltage) was measured at 3.211 volts.
125,000mcd?
Horse puckey!!!
Horse puckey!!!!!!
HORSE PUCKEY!!!!!!!!!
Spectrographic analysis of this white LED.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
5mm 4-chip high-intensity white LED, (URL not yet known), part # (unknown)
(Rec'd & tested 07-10-06)
This is a 4-chip 5mm white LED from Japan. It has four dice (light-emitting regions) connected in parallel inside the case, and is designed to be operated with a forward current (If) of 100mA.
Intensity was measured at 28,700mcd at an If of 99mA.
This LED has a wider than usual viewing angle; remember, wider viewing angles always equal lower mcd values.
Vf (forward voltage) was measured at 3.136 volts.
Spectrographic analysis of this white LED.
Drive current was 99mA for this test.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
5mm high-intensity white LED, www.zexstar.com, part # (unknown)
(Rec'd 06-26-06, tested 06-28-06)
This is a 0.5 watt 5mm white LED.
The web page it is apparently on (a simplistic datasheet) right here if you're interested.
Here is a photograph of the LED itself.
And here's one comparing it with a standard 5mm LED.
This 0.5 watt one is the one at the top.
At a test current of 150mA, intensity was measured at 8,360mcd.
Published intensity value is not known.
The normal operating current for this LED is 125mA.
Vf was measured at 3.477 volts.
I'm not equipped to measure beam angles at all. It is published as 75°; looks wider to me though.
Spectrographic analysis of this white LED.
Drive current was 75mA for this test.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
5mm warm white LED, www.zexstar.com, part # L5WWE1
(Rec'd & tested 06-26-06)
This is a warm white LED, which has an apparent color temperature of 3,500°K, which is a somewhat yellowish warm white in color.
At a test current of 19.28mA, intensity was measured at 12,880mcd.
Published intensity value is 13,000mcd.
Vf was measured at 3.175 volts.
I'm not equipped to measure beam angles at all. It is published as 15-20°.
Spectrographic analysis of this warm white LED.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
5mm white LED, Manshun Int'l Ltd, part # YLPW5111A-QQ
(Rec'd 03-22-06, tested 03-24-06)
This is a white LED, which has an apparent color temperature of 6,200°K, which is a somewhat cool white in color.
Although dimmer than some, the beam of this white LED is fairly even, with only a slight bluish tinge toward the center.
At a test current of 19.28mA, intensity was measured at 7,480mcd.
Published intensity values range from 5,800mcd to 7,000mcd.
Vf was measured at 3.258 volts.
I'm not equipped to measure beam angles at all. It is published as 15°.
Spectrographic analysis of this white LED.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.
''Snow-White'' White LED
(Received 12-10-05, tested 12-22-05)
I purchased five of these LEDs from a group buy on Candlepower Forums in early-December 2005.
This is the "snow-white" white LED that Peak LED Solutions has been using in some of their flashlights. It comes packaged in a standard water-clear epoxy case, 5mm in size, through-hole in configuration.
The beam from this LED has a viewing angle of ~20°, and consists of a surprisingly smooth white area with no blue coloration in it.
Color temperature appears to be approximately 4,900°K.
Measures 17,670mcd on a Meterman LM631 light meter.
Test current was 19.28mA at a Vf of 3.133 volts in my American Opto Plus tester.
Nichia NSPL510S Warm-white LED
(Received 12-29-04, tested 09-05-05)
A fan of the website sent me three of these lamps, along with several other types of LEDs and several flashlights in late-December 2004.
This is a warm white LED, packaged in a standard water-clear epoxy case, 5mm in size, through-hole in configuration.
The beam from this LED has a viewing angle of ~50°, and consists of a wide, circular yellowish-white area, with a dimmer area right in the center. This dimmer central area is perfectly normal for wide-angle Nichia LEDs, and is nothing whatsoever to be concerned about.
Color temperature appears to be approximately 3,650°K.
Light is slightly less yellow than as depicted in this photograph.
Measures 1,580mcd on a Meterman LM631 light meter.
Viewing angle is ~50°.
Remember, wider viewing angles ALWAYS equal lower mcd values.
Test current was 19.28mA at a Vf of 3.160 volts in my American Opto Plus tester.
Roithner Lasertechnik B5-43SUN-JB Warm-white LED
(Received 12-29-04, tested 09-05-05)
A fan of the website sent me three of these lamps, along with several other types of LEDs and several flashlights in late-December 2004.
This is a warm white LED, packaged in a standard water-clear epoxy case, 5mm in size, through-hole in configuration.
The beam from this LED has a viewing angle of ~18°, and consists of a circular pinkish-yellowish-white area, with a dimmer area right in the center.
Color temperature appears to be approximately 3,500°K.
Light is significantly less yellow than as depicted in this photograph.
Measures 4,560mcd on a Meterman LM631 light meter.
Viewing angle is ~18°.
Test current was 19.28mA at a Vf of 3.101 volts in my American Opto Plus tester.
Unknown brand 10mm White LED
(Received & tested 08-20-05)
This is a white LED, packaged in a standard water-clear epoxy case, 10mm in size, through-hole in configuration.
The beam from this LED has a viewing angle of ~10°, and consists of a bluish central hotspot, with a "rotten porpoise urine green" penumbra surrounded by a noticeably more pleasant white corona; just about as bright as the penumbra.
Color temperature appears to be approximately 9,500°K in the central part of the beam, and 5,000°K in the outer corona.
Measures 78,600mcd on a Meterman LM631 light meter.
Viewing angle is ~10°; remember, narrower viewing angles always equal higher mcd values.
Test current was 19.28mA at a Vf of 3.365 volts in my American Opto Plus tester.
WILYCON 10mm WHITE LED, #WL10-W10-20-6000
(Received & tested 05-26-05)
This is a white LED, packaged in a standard water-clear epoxy case, 10mm in size, through-hole in configuration.
The beam from this LED has a viewing angle of ~12°, and consists of a bluish central hotspot, with a "rotten horse urine green" penumbra surrounded by a noticeably more pleasant white corona; just about as bright as the penumbra.
Color temperature appears to be approximately 9,500°K in the central part of the beam, and 5,000°K in the outer corona.
Measures 61,400mcd on a Meterman LM631 light meter.
Viewing angle is ~12°; remember, narrower viewing angles always equal higher mcd values.
Test current was 20.52mA at a Vf of 3.291 volts in my Glow-On LED tester.
This LED started out with an intensity of 81,000mcd, but after operating continuously for at least 288 hours (at an If assumed to be 20mA), has fallen in intensity to 61,400mcd.
NSPL510S 5mm WARM WHITE LED, www.nichia.com
(Received 02-26-05, tested 02-27-05
This LED, packaged in a standard water-clear epoxy case, 5mm (T1 3/4) in size, through-hole in configuration. It is Nichia's warm white wide viewing angle lamp.
The beam from this LED has a viewing angle of 50°, and is fairly even throughout its illuminated area, with a very slightly brighter ring near the outer perimeter. This is typical of 5mm round white LEDs with wide viewing angles, and is nothing whatsoever to be concerned about.
Color temperature appears to be approximately 4,300°K.
Measures 3,310mcd on a Meterman LM631 light meter.
Viewing angle is 50°; remember, wider viewing angles always equal lower mcd values.
Test current was 25.5mA in my Hosfelt Electronics LED tester.
LED light is slightly more yellow than this photograph depicts.
Roithner Lasertechnik, warm white 5mm LED, B5-43SUN-JB
Received on 02-26-05, tested on 02-27-05
This is a warm white LED in a water-clear 5mm epoxy package.
The color tint of this white LED is warmer than standard white LEDs, with a color temperature estimated at 4,000°K. The light output has a noticeably pinkish cast to it; this is perfectly normal with warm white LEDs.
Measures 6,900mcd with a test current of 25.5mA.
LUMEX LOW VF WHITE LED, www.lumex.com
(Received & tested 02-25-05
This LED, packaged in a standard water-clear epoxy case, 5mm (T1 3/4) in size, through-hole in configuration. This white LED has circuitry built-in, so it can operate from less than the 3.6 volts most other white LEDs require.
The beam from this LED consists of a distinctly bluish-white circular hotspot approximately 20 degrees wide, with much less corona or spill light than is usual for 5mm white LEDs.
Measures a dissapointingly low 890mcd on a Meterman LM631 light meter with the test parameters shown below.
Test current was 21.7mA and Vf was 2.016 volts for this test.
NSPW500CS 5mm WHITE LED, www.nichia.com
(Received & tested 02-22-05
This LED, packaged in a standard water-clear epoxy case, 5mm (T1 3/4) in size, through-hole in configuration. It is advertised to be the brightest 5mm white LED that Nichia has developed to date.
The beam from this LED consists of a slightly bluish-white hotspot, surrounded by a slightly greenish-white corona. This is typical of 5mm round white LEDs, and is nothing whatsoever to be concerned about.
The NSPW500CS is available now.
Leadtime is about 3 weeks
It is not currently available off the online store, but it will be soon.
Measures 29,200mcd on a Meterman LM631 light meter.
Test current was 25.5mA in my Hosfelt Electronics LED tester.
Ebay, 5mm White LED
(Recieved & tested 01-10-05)
This is a 5mm white LED that a fan of the website sent. These LEDs are available from Ebay seller warden-jp2002. It is a white LED in a standard round 5mm water-clear epoxy package.
This LED outputs a generally white beam, with a slight bluish-white hotspot surrounded by a brownish-greenish-white penumbra and a bluish-white corona. The estimated color temperature of the hotspot appears to be approximately 6,100°K.
Photo of the LED's beam on the test target from ~12".
Measures 20,100mcd with a test current of 25.5mA.
Viewing angle appears to be 18-20°.
I was asked to test this LED at three currents - here are the other two:
5mA 4,700mcd
2mA 1,380mcd
Roithner Lasertechnik 5mm White LED, part # 5W4HCA-V
(Recieved 12-29-04, tested on 12-30-04)
This is a 5mm white LED that a fan of the website sent along with several other types of LEDs and several flashlights. It is a white LED in a standard round 5mm water-clear epoxy package.
This LED outputs a generally white beam, with a slight bluish-white hotspot surrounded by a brownish-greenish-white penumbra. The estimated color temperature of the hotspot appears to be approximately 5,000°K.
Photo of the LED's beam on the test target from ~12".
Measures 20,100mcd with a test current of 25.5mA.
Viewing angle appears to be 18-20°.
Richmond Controls 3mm Golden White LED
(Recieved and tested on 12-10-04)
This is a 3mm LED that a fan of the website sent. It is a "Golden White" LED in a standard round 3mm orange-tinted epoxy package.
This LED outputs a yellowish-white beam, with no discernable hotspot. The estimated color temperature of the beam appears to be 3,400°K.
Photo of the LED's beam on the test target from ~12".
Beam color is yellower than this photograph depicts.
Measures 3,880mcd with a test current of 21.63mA.
Viewing angle appears to be at least 60°. Remember, wider viewing angles *always* equal fewer mcd.
Unknown brand 5mm White LED
(Recieved on 12-04-04, tested 12-06-04)
This is one of two 5mm LEDs that a fan of the website sent. It is a white LED in a standard round 5mm water-clear epoxy package.
This LED outputs a slightly bluish-white hotspot, surrounded by a "rotten cat urine green" penumbra, surrounded by a
non-bluish-white corona. The estimated color temperature of the main portion of the beam (the hotspot) appears to be 7,700°K, and
the corona (beam perimeter) appears to be 4,800°K or even a bit lower.
Photo of the LED's beam on the test target from ~12".
Measures 13,340mcd with a test current of 26mA.
Chi Wing 5mm White LED, (http://stores.ebay.com/chiwingledproductshop)
(Recieved on 04-30-04, tested 05-01-04)
Both these LEDs and 3,000-4,000mcd Chi Wing diffused blue ones were sent to me by a fan of the website. I believe he wanted them reviewed, so here ya go. ;-)
This is an example of Chi Wing's 10,000mcd white LED.
They claim a viewing angle of 15°.
This LED's beam appears much as it does in the photograph below; with a slightly bluish-white center and a white outer region. I don't have any complaints about this LED's beam quality, knowing how white LEDs work in general.
Photo of the LED's beam on the test target from ~12".
Measures 10,900mcd with a test current of 26mA.
Nichia America, part # NCCW022, SMD, 70°
(Received and tested 03-17-04)
This is Nichia's latest LED to show up in the high-powered LED wars. This is labelled as a SMD LED, even though it seems large for an SMD component. But it has a flat base with the leads going off to the sides, so it can indeed sit flush on a PCB or what have you.
Here are a couple of pictures, showing the new LED both at an isometric angle and from above.
The web page referencing these new LEDs is http://www.nichia.co.jp/product/led-smd-powerled.htm if you're interested.
This LED is rated to deliver 23 lumens of light, however I cannot measure lumens because you need a special instrument called an "integrating sphere" to do that, and I don't own or have access to one. And readings in mcd (millicandelas) will seem awfully low, because this LED has a wide viewing angle of 70°. If the beam were focused with an optic or a lens, values above 200,000mcd aren't unreasonable.
The Vf of this LED can range from 3.8 to 4.3 volts DC, and you're supposed to supply 350mA to it - 500mA maximum - with proper heatsinking of course.
A flashlight using this LED was supplied with the LED itself, and it has a bright, surprisingly wide beam, even though it's focused with an aspherical lens. The link to this flashlight is right here if you're interested.
The LED itself is very new, and I don't believe it is on the Nichia website or the Nichia Light Emitting Diode 2004 catalogue yet.
Nichia America, part # NSPW500BS (Rank B2S), 5mm round, 20°
(Received 11-03-03, tested 12-26-03)
A few weeks ago, I received an envelope from Nichia, containing several LEDs and a small LED flashlight. Here is one of those LEDs, the white NSPW500BS, a 5mm LED in a standard, water-clear epoxy package.
Here's the beam shot on the target at ~12"
Measures 11,770mcd with a test current of 23mA.
According to the book, a standard-ranking 5mm white NSPW500 should emit 6,400mcd. This LED is one of their higher ranking versions, which is why it's brighter.
(Edit) A fan of the website who's work I trust had the following info to add:
Meanwhile, it appears to me that recent Nichia production of NSPB-500BS
mostly exceeds the 6400 mcd (at 20 mA) center of rank R, and quite a bit
of it makes it into Rank S.
Most white Nichia LEDs that I have received in the past year of R rank
appeared to me closer to almost S than center of R.
And here is the same shot of the same LED on the same target, but with the camera's
exposure value reduced by 2, to show the bluish central region of the LED's beam.
This is completely normal for this kind of LED, and does not in any way indicate a problem with it.
Chi Wing 5mm White LED, (http://stores.ebay.com/chiwingledproductshop)
(Rec'd 12-24-2003, tested 12-25-2003)
A fan of the website sent me a box of goodies (like batteries, LEDs, flashlights, and a laser); and 5 of the 8000mcd and 9 of the 4000mcd LEDs were among the goodies.
These are Chi Wing's 5mm 8000mcd and 4000mcd white LEDs. They have an icy cool bluish white color.
Chi Wing's 8000mcd white
Measures 11,990mcd.
Chi Wing's 4000mcd white
Measures 6,990mcd.
Both LEDs were provided with a test current of 23mA.
I'm not equipped to measure beam angles at all. Looks like about 18-22 degrees to me.
These LEDs appear to be brighter than their advertised brightness, and have smoother than usual beams for 5mm white LEDs.
Chi Wing 3mm White LED, (http://stores.ebay.com/chiwingledproductshop)
(Rec'd 10-23-2003, tested 12-24-2003)
A fan of the website sent some of these back in late October; I sincerely apologise for getting them on my website this late.
What they are is a 3mm (T1) sized LED in a water clear epoxy case. These are available for approximately $25 per 100 (shipping included) via Chi Wing's frequent Ebay auctions. The link above will take you to his Ebay store.
This LED lacks the rings and spots normally seen in the beams of other 3mm and 5mm white LEDs.
At a test current of 23mA, one LED produced 2,700mcd, a second 2,700mcd, and a third 3,200mcd.
These are advertised as "5,000mcd white LEDs", so the intensity figures appear to run a bit on the low side.
Probable ISP 4-Chip White LED, (www.ledsales.com.au/)
(Rec'd 12-15-2003, tested 12-16-2003)
I received several LEDs from Australia yesterday, and this unusual little guy was among them. It comes packaged in what I believe is an 8mm water clear epoxy case, and has wider than usual lead spacing and larger-in-diameter than usual leads. But the real unusual part is what's inside the LED. Instead of a single die with a pair of bond wires attaching to it, this LED has four (4) dice inside of its die cup, and it's rated to run at 80mA instead of the usual 20mA that regular LEDs ought to be operated at.
Wide, 50° beam lights up the entire test target.
The beam is free of rings, blue blotches or crosses, and other evil little things (artifacts) you find in the beams of most other white LEDs.
The color temperature is a bit on the high (cool) side, probably coming in at around 7,000°K. Overall, this LED has a pleasant, icy cool white color to it.
Measures 6,780mcd with a test current of 87mA.
Remember, wider viewing angles always give fewer mcd.
These LEDs are believed to be an ISP Korea (International Systems Processing) part.
Appears to be ISP part number 8W4DHCB-H.
ETG White LED, # ETG-5CFWHT-30 (www.etgtech.com)
(Rec'd 10-06-2003)
This is marked as a "New Item" on the envelope it came in. This is a standard 5mm LED in a water-clear case. The LED has a pale yellow phosphor when off, and a pure, snow-white color when on. The two test units measured 3,500mcd and 4,000mcd at a test current of 19.2mA. But this is what makes these LEDs worthwhile:
Check out that smooth, round, white beam with none of those evil blue things in it. For many applications, a smooth white beam without blue crosses, splotches, or other artifacts is preferable to a brighter LED with artifacts in its beam. The color temperature seems to be around 5000°K, so the lamp doesn't look very blue at all, when compared with other white LEDs.
The viewing angle of this LED appears to be about 30 degrees, but I don't have the equipment to measure this with, so your results may vary.
Wilycon # ? (New white model), Wilycon Corp. (http://www.led-center.com), $0.25 each for more than 50,000 pcs
(Rec'd approx. 07-20-2002)
This is Wilycon's newest 5mm white LED. It comes in a standard clear epoxy package, and the phosphor has a snow white color to it when off, rather than the usual pale urine yellow color. This LED has an overall cool white, even beam without the blue hotspot normally seen in white LEDs. Upon close inspection, a slightly warmer white disk can be seen in the center of the beam; it is faint and not readily apparent however and does not detract from the LED's functionality.
Measured 3,150mcd.
The target I normally use was misplaced; hence the sheet of labels being used as a target for this beam shot. Note the even, white coloration without the annoying blue cross or splotch in the center.
Published specifications:
Chromaticity coordinates: x=.032 y=.031
Maximum power dissipation: 120mW
Forward current 20mA typical, 150mA peak
Forward voltage 3.0 typical, 3.3 max
Luminous intensity: 2000mcd minimum, 3000mcd typical
Viewing angle: 23° typical
WHITE 5500-6500K InGaN+phosphor
ULTRAVIOLET 370-390nm GaN
BLUE 430nm GaN+SiC
BLUE 450 and 473nm InGaN
BLUE Silicon Carbide
TURQUOISE 495-505nm InGaN
GREEN 525nm InGaN
YELLOW-GREEN 555-575mn GaAsP & related
YELLOW 585-595nm
AMBER 595-605nm
ORANGE 605-620nm
ORANGISH-RED 620-635nm
RED 640-700nm
INFRARED 700-1300nm
True RGB Full Color LED
Spider (Pirrahna) LEDs
SMD LEDs
True violet (400-418nm) LEDs
Agilent Barracuda & Prometheus LEDs
Oddball & Miscellaneous LEDs
Programmable RGB LED modules / fixtures
Where to buy these LEDs
Links to other LED-related websites
The World's First Virtual LED Museum
The Punishment Zone - Where Flashlights Go to Die
Legal horse puckey, etc.
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