LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Electrical / Optical Characteristics at Ta=25
℃
Part No.
LTST-
T680KRKT
Parameter
Symbol
Min.
Typ.
Max.
Unit
Test Condition
IF = 20mA
Note 1
Note 2 (Fig.5)
Measurement
@Peak (Fig.1)
Note 3
Luminous Intensity
IV
71.0
224.0
mcd
Viewing Angle
2θ
1/2
T680KRKT
120
deg
Peak Emission Wavelength
λP
T680KRKT
639
nm
Dominant Wavelength
λd
T680KRKT
631
nm
Spectral Line Half-Width
∆λ
T680KRKT
20
nm
Forward Voltage
VF
T680KRKT
2.0
2.4
V
IF = 20mA
Reverse Current
IR
T680KRKT
10
μA
VR = 5V
NOTE: 1. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE
eye-response curve.
2.θ1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
3. The dominant wavelength,
λd
is derived from the CIE chromaticity diagram and represents the single
wavelength which defines the color of the device.
4. Forward Voltage Tolerance is +/- 0.1 volt.
Part No. : LTST-T680KRKT
BNS-OD-C131/A4
Page :
3
of
11
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