LITE-ON

TECHNOLOGY

CORPORATION

Property of Lite-On Only

Electrical

Optical

Characteristics

At

Ta=25℃

Parameter

Symbol

Part No.

LTST-

Min.

Typ.

Max.

Unit

Test Condition

Luminous Intensity

IV

S270KEKT

18.0

54.0

mcd

IF = 20mA

Note 1

Viewing Angle

2θ1/2

S270KEKT

130

deg

Note 2 (Fig.6)

Peak Emission Wavelength

λP

S270KEKT

632

nm

Measurement

@Peak (Fig.1)

Dominant Wavelength

λd

S270KEKT

624

nm

IF = 20mA

Note 3

Spectral Line Half-Width

Δλ

S270KEKT

20

nm

Forward Voltage

VF

S270KEKT

2.0

2.4

V

IF = 20mA

Reverse Current

IR

S270KEKT

10

μA

VR = 5V

Capacitance

C

S270KEKT

40

PF

VF = 0

f = 1MHZ

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.

Part

No. : LTST-S270KEKT

Page :

4

of

11

BNS-OD-C131/A4