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ISP Korea 5mm 100mA LEDs


A typical ISP 5mm 100mA LED.



International Systems Processing (ISP), 5mm 100mA white LED, part # 5W3(24)CA-H
Received and tested on 07-06-04
This looks like an ordinary 5mm round white LED in a water-clear epoxy package - until you connect it, anyway. These LEDs have a Vf (forward voltage) of 3.1 to 3.6 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. 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 29,300mcd on a Meterman LM631 light meter.
Vf is 3.04 volts at 96mA. Forward current is 96mA (0.096 amps) on my Mid-Easterm variable voltage, current-clamping power supply that I used for this test, and that I will use for subsequent tests on this page.




International Systems Processing (ISP), 5mm 100mA blue LED, part # 5B3(24)CA
Received and tested on 07-06-04
This looks like an ordinary 5mm round blue LED in a water-clear epoxy package - until you hook it up, anyway. These LEDs have a Vf (forward voltage) of 3.1 to 3.6 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 470nm, right 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 6,170mcd on a Meterman LM631 light meter.
Forward current is 96mA (0.096 amps).




International Systems Processing (ISP), 5mm 100mA green LED, part # 5G3(24)CA
Received 07-06-04, tested 07-07-04
This looks like an ordinary 5mm round green LED in a water-clear epoxy package - until you hook it up, anyway. These LEDs have a Vf (forward voltage) of 3.1 to 3.6 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 525nm, right 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 16,500mcd on a Meterman LM631 light meter.
Forward current is 96mA (0.096 amps).




International Systems Processing (ISP), 5mm 100mA yellow LED, part # 5Y3(24)CA
Received 07-06-04, tested 07-10-04
This looks like an ordinary 5mm round yellow LED in a water-clear epoxy package - until you hook it up, 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 587nm, right 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.


Light output is much less reddish than this photograph makes it appear.

Brightness measures 24,500mcd on a Meterman LM631 light meter.
These LEDs are only supposed to output 7,000mcd, so I may have gotten a particularly potent one.
Forward current is 96mA (0.096 amps).




International Systems Processing (ISP), 5mm 100mA yellow LED, part # 5R3(24)CA
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
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
Legal horse puckey, etc.
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