LITE-ON

TECHNOLOGY

CORPORATION

P r o p e r t y o f L i t e - O n O n l y

Electrical

Optical

Characteristics

At

Ta=25℃

℃

℃

℃

Parameter

Symbol

Part No.

LTST-

Min.

Typ.

Max.

Unit

Test Condition

Luminous Intensity

IV

C191TBKT

28.0

-

180.0

mcd

IF = 20mA

Note 1

Viewing Angle

2θ1/2

C191TBKT

130

deg

Note 2 (Fig.6)

Peak Emission Wavelength

λP

C191TBKT

468

nm

Measurement

@Peak (Fig.1)

Dominant Wavelength

λd

C191TBKT

465.0

-

475.0

nm

IF = 20mA

Note 3

Spectral Line Half-Width

Δλ

C191TBKT

25

nm

Forward Voltage

VF

C191TBKT

2.80

-

3.80

V

IF = 20mA

Reverse Current

IR

C191TBKT

10

μA

VR = 5V

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.

Part

No. : LTST-C191TBKT

Page :

4

of

11

BNS-OD-C131/A4