Eternaleds HP-3 Flood Bulb, retail $34.99 (
Manufactured by Eternaleds (
Last updated 09-14-08

This is an LED spotlight bulb that uses three 1-watt "daylight white" LEDs, and is designed to be screwed into any E26/E27 medium screw base female light bulb receptacle. It is designed to operate at voltages ranging from 100 volts to 130 volts AC (there is no labelling with the lamp itself or on the website; so this is only an educated guess). And although it only uses 4.5 watts of power, it has the light output of a 30 watt incandescent bulb!

According to the website, the The HP-3 is a great replacement for canned, recessed or track lighting fixtures that use PAR20, PAR30 or PAR38 floodights.

It has a generous metal heatsink for the high-powered LEDs, so overheating of the LEDs should not be an issue here.


To use this bulb, just find a place with an incandescent bulb in it that you'd like to replace. Unscrew the old bulb, and throw it onto a hard floor - love to hear those things pop!!! Or gently place it in a dresser drawer full of washrags, underwear, or other soft fuzzy things if you're averse to breaking light blubs.

Screw this bulb in the receptacle in its place...there, done with that, fun ya!!!
That was rediculously easy, wasn't it?

This is an LED light bulb, not a flashlight. So I won't throw it against the wall, stomp on it, try to drown it in the toylet bowl or the cistern, run over it, swing it against the concrete floor of an outdoor patio, use a medium claw hammer in order to bash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them.

Handle it as you would an ordinary household light bulb, and it shouldn't give you any guff.

Since this is a light bulb with a set purpose, I don't have a whole lot more to say about it.

The base of this bulb is E26/E27 (26-27mm), which is the standard medium screw base that is used by household light blubs in the United States.

DO NOT under any circumstances use this bulb in a fixture equipped with a dimmer switch, whether the dimmer is in the fixture itself or on the wall controlling that fixture (usually a knob but sometimes lever-style like an ordinary switch). The bulb will overheat and fail if this is done. You don't want baby brown recluse spiders or Sphinx Moth caterpillars (larvae)...I don't want an unwanted fire.

The caution regarding using a dimmer is pretty much generic for any LED product powered by 110-130 volts AC; not just this bulb. Using this or any other 110-130 volts (or for that matter, 220-240 volts for viewers outside North America) AC LED product can result in overheating, failure, and possible fire because the AC waveform is altered by the circuitry in the dimmer, and AC line-powered LED products not using a step-down transformer tend to not do well with the altered AC waveform.

I waved this lamp in front of my eyes, and saw flickering. I also tested this bulb with an oscilloscope, and also saw the pulses.
So, totally flicker-free to the eye? No.

After approximately 3 hours of operation operating base-down at 119.4 volts, temperature of the metal area at the top of this bulb was measured at 117°F (47.2°C). So it's warm, but it is ***NOT*** hot. It's cooler than all CFLs and all incandescent household bulbs would be at three hours. I used a noncontact infrared thermometer to measure this.

(Update 09-14-08): After taping a section of heatsink with Scotch® brand Magic™ tape (a matte finish tape) and operating the lamp base-down for *EXACTLY* 60 minutes (well, not *EXACTLY* down to the microsecond (nanosecond, picosecond, femtosecond, attosecond, etc.), but you get the idea - I started this test at 10:07am PDT), the temperature was remeasured (on the taped area) at 120°F (48.9°C).

This bulb has transparent, prismatic plastic diffuser over each LED; these diffusers not only widens & softens the beam, they protect the LEDs against things like prying fingers, screwdrivers, and very minor water splashes.

Beam photograph on the test target at 12".
Photograph intentionlly left uncropped so you can get at least a vague idea of the viewing angle.
The viewing angle is listed as 60°.
Measures 271,000mcd on a Meterman LM631 light meter.

This is a wide viewing angle source, and if I've told you once, I've told you 1,053,000 times:
Wider viewing angles always, always, ALWAYS equal lower mcd values.

Beam photograph on a wall at ~10 feet.

Those rectangular graphic things in the upper left quadrant of this photograph are marquees from:

Sega ''Star Trek''
Atari ''Tempest''
Venture Line ''Looping''
Jaleco ''Exerion''

upright coin-op arcade video games from the 1980s.

And those colored graphics toward the far left are two of my three "Viva Piñata" posters.

Spectrographic plot
Spectrographic analysis of the LEDs in this light bulb.

ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.

Test unit was sent to me by J.C. of Eternaleds on 09-05-08, and was received on the morning of 09-09-08.

Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

According to the Eternaleds website, although not listed as RoHS compliant, it does state that there is no mercury in it.

UPDATE: 00-00-00



    MANUFACTURER: Eternaleds
    PRODUCT TYPE: LED spotlight bulb
    LAMP TYPE: 1-watt "daylight white" LED
    No. OF LAMPS: 3
    BEAM TYPE: Wide spot w/very soft fall-off to perimeter
    CASE MATERIAL: Plastic & metal
    BEZEL: Metal; LEDs protected by prismatic plastic diffusers
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Very light splatter-resistance at maximum
    WARRANTY: 3 years


    Star Rating

Eternaleds HP-3 Flood Bulb *

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