5
Electrical Characteristics at T
A
= 25
o
C
Blue Green Cyan
Parameters Symbol Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Units Test Condition
Forward Voltage V
F
3.4 4.0 3.2 4.0 3.3 4.0 V I
F
= 20 mA
Capacitance C 53 53 53 pF V
F
= 0, f = 1 MHz
Reverse Voltage
[2]
V
R
0.6 0.6 0.6 V I
R
= 10 µA
Thermal Rθ
J-PIN
240 240 240
o
C/W LED Junction to
Resistance cathode lead
Dominant λ
d
460 470 480 520 530 540 490 500 510 nm I
F
= 20 mA
Wavelength
[3]
Peak Wavelength λ
PEAK
466 523 495 nm Peak of wavelength
of spectral distribu-
tion at I
F
= 20 mA
Spectral Half ∆λ
1/2
21 30 26 Wavelength width at
Width spectral distribution
power point at
I
F
= 20 mA
Luminous η
v
62 588 220 lm/W Emitted luminous
Efficacy
[4]
power/Emitted
radiant power
Notes:
1. 2θ
1/2
is the off-axis angle where the luminous intensity is ½
the
on axis intensity.
2. The reverse voltage of the product is equivalent to the forward voltage of the protective chip at I
R
= 10 µA.
3. The dominant wavelength, λ
d
, is derived from the Chromaticity Diagram and represents the color of the lamp.
4. The radiant intensity, Ie in watts/steradian, may be found from the equation Ie = Iv/η
v
, where Iv is the luminous intensity in candelas and
η
v
is the luminous efficacy in lumens/watt.
Figure 1. Relative intensity vs. wavelength.
WAVELENGTH – nm
RELATIVE INTENSITY
350 400 450 500 550 600 650
1.00
CYAN
BLUE
0
0.80
0.60
0.40
0.20
GREEN
0
1.5
0.3
RELATIVE LUMINOUS INTENSITY
DC FORWARD CURRENT – mA
0 5 15 30
1.2
10 25
20
0.9
0.6
Figure 3. Forward current vs. ambient
temperature.
FORWARD CURRENT – mA
0
0
AMBIENT TEMPERATURE – C
40 80
40
10
20 60 100
20
30
Rθ
J-A
= 585 ˚C/W
Rθ
J-A
= 780 ˚C/W
Figure 2. Relative luminous intensity vs.
forward current.
