7
Electrical/Optical Characteristics at T
A
= 25°C
Parameter Symbol Min. Typ. Max. Units Test Conditions
Forward Voltage I
F
= 20 mA
Amber (λ
d
= 592 nm) 2.3
Red-Orange (λ
d
= 617 nm) V
F
2.35 2.6
[1]
V
Red (λ
d
= 630 nm) 2.4
Reverse Voltage V
R
5 20 V I
R
= 100 µA
Peak Wavelength Peak of Wavelength of
Amber 594 Spectral Distribution
Red-Orange λ
PEAK
623 nm at I
F
= 20 mA
Red 639
Spectral Halfwidth ∆λ
1/2
17 nm Wavelength Width at Spectral Distrib-
ution
1
/
2
Power Point at I
F
= 20 mA
Speed of Response t
s
20 ns Exponential Time
Constant, e
-t/t
s
Capacitance C 40 pF V
F
= 0, f = 1 MHz
Thermal Resistance RQ
J-PIN
240 °C/W LED Junction-to-Cathode Lead
Luminous Ecacy
[2]
Emitted Luminous
Amber 500 Power/Emitted Radiant Power
Red-Orange h
v
235 lm/W at I
f
= 20 mA
Red 155
Luminous Flux j
V
1000 mlm IF = 20 mA
Luminous Eciency
[3]
h
e
Emitted
Amber 22 Luminous Flux/
Red-Orange 22 lm/W Electrical Power
Red 21
Notes:
1. For options -xxRxx, -xxSxx, -xxTxx, -xxUxx, -xxWxx, -xxYxx, max forward voltage (Vf) is 2.6 V. Refer to Vf bin table.
2. The radiant intensity, I
e
, in watts per steradian, may be found from the equation I
e
= I
v
/h
v
, where I
v
is the luminous intensity in candelas and h
v
is the luminous ecacy in lumens/watt.
3. h
e
= j
V
/ I
F
x V
F
, where j
V
is the emitted luminous ux, I
F
is electrical forward current and V
F
is the forward voltage.
Figure 1. Relative Intensity vs. Peak Wavelength. Figure 2a. Forward Current vs. Forward Voltage for
Option -xxRxx, -xxSxx, -xxTxx, -xxUxx, -xxWxx and
-xxYxx.
WAVELENGTH – nm
RELATIVE INTENSITY
550 600 650 700
1.0
0.5
0
AMBER
RED-ORANGE
RED
DC FORWARD CURRENT – mA
0
0
FORWARD VOLTAGE – V
2.5
40
30
0.5 1.5
60
3.0
10
20
50
RED
1.0 2.0
AMBER
