VSLB3940 datasheet(2/5 Pages) VISHAY

2 / 5 page

VSLB3940

www.vishay.com

Vishay Semiconductors

Rev. 1.6, 13-Jan-17

Document Number: 81931

For technical questions, contact: emittertechsupport@vishay.com

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Fig. 1 - Power Dissipation Limit vs. Ambient Temperature

Fig. 2 - Forward Current Limit vs. Ambient Temperature

100

120

140

160

180

1020

3040506070

8090100

21317

Tamb - Ambient Temperature (°C)

thJA = 300 K/W

100

120

203040

50607080

90 100

Tamb - Ambient Temperature (°C)

21318

thJA = 300 K/W

BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

PARAMETER

TEST CONDITION

SYMBOL

MIN.

TYP.

MAX.

UNIT

Forward voltage

IF = 100 mA, tp = 20 ms

1.15

1.35

1.6

IF = 1 A, tp = 100 μs

-2.2

Temperature coefficient of VF

IF = 1 mA

TKVF

--1.5-

mV/K

IF = 100 mA

TKVF

--1.1-

mV/K

Reverse current

VR = 5 V

μA

Junction capacitance

VR = 0 V, f = 1 MHz,

E = 0 mW/cm2

-70

Radiant intensity

IF = 100 mA, tp = 20 ms

110

mW/sr

IF = 1 A, tp = 100 μs

650

mW/sr

Radiant power

IF = 100 mA, tp = 20 ms

φe-

Temperature coefficient of radiant

power

IF = 1 mA

TKϕe

-1.1

%/K

IF = 100 mA

TKϕe

-0.51

%/K

Angle of half intensity

-± 22

deg

Peak wavelength

IF = 30 mA

λp

940

Spectral bandwidth

IF = 30 mA

Δλ

-25

Temperature coefficient of lp

IF = 30 mA

TKλp

-0.25-

Rise time

IF = 100 mA, 20 % to 80 %

-15

Fall time

IF = 100 mA, 20 % to 80 %

-15

Virtual source diameter

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