Received 07-06-04, tested 07-11-04
This looks like an ordinary 5mm round red LED in a water-clear epoxy package - until you connect it, anyway. These LEDs have a Vf (forward voltage) of 1.8 to 2.3 volts, and an If (forward current) of 100mA - or 0.1 amps.
The die (light-emitting chip) in this LED is square, and measures 24 mils (just over 1/3 the thickness of a US penny) on each side.
The dominant wavelength (where you would point to on a color chart) appears to be right around 627nm, right about where it ought to be.
Viewing angle is specified as 25°.
Since these LEDs are easy to confuse with regular 20mA 5mm LEDs in your parts bag, I suggest storing them in a marked bag, box, or other container, seperate from your 20mA 5mm LEDs.
Brightness measures 16,200mcd on a Meterman LM631 light meter.
Forward current is 96mA (0.096 amps).
The blue and green LEDs have a 5nm range (465-470nm for the blue, 520-525nm for the green); the yellow and red LEDs have a 10nm range (580-590nm for the yellow, 620-630nm for the red).
I lost two of the LEDs (a blue one and a red one) while setting up for photo shoots and light measurements; Mr. Chang sent two of each, so I was able to complete the tests on them.
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
True RGB Full Color LED
Spider (Pirrahna) 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
Legal horse puckey, etc.
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