3/11
BNS-OD-FC002/A4
SMD LED
LTST-C191KGKT
Notes:
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. Caution in ESD:
Static Electricity and surge damages the LED. It is recommend to use a wrist band or anti-electrostatic
glove when handling the LED. All devices, equipment and machinery must be properly grounded.
3.3
Electrical / Optical Characteristics at Ta=25°C
Parameter Symbol
LTST-C191KGKT
Unit
Test
Condition
MIN.
TYP. MAX.
Luminous Intensity IV
18.0 - 71.0
mcd
IF =20mA
Note 1
Viewing Angle 2θ
1/2
130 deg Note 2 (Fig.5)
Peak Emission Wavelength
λP 574.0 nm
Measurement
@Peak (Fig.1)
ominant Wavelength λd 567.5 576.5 nm
IF =20mA
Note 3
Spectral Line Half-Width Δλ 15 nm
Forward Voltage VF 1.9 2.4 V
IF =20mA
Reverse Current
IR - - 10 μA
VR = 5V
