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littelfuse-integrated-circuits-single-optocouplers-01-block-diagram
Isolators

LDA111S

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LITTELFUSE

TRANSISTOR OUTPUT OPTOCOUPLERS OPTOCOUPLER SINGLE-TRANSISTOR

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littelfuse-integrated-circuits-single-optocouplers-01-block-diagram
Isolators

LDA111S

Active
LITTELFUSE

TRANSISTOR OUTPUT OPTOCOUPLERS OPTOCOUPLER SINGLE-TRANSISTOR

Technical Specifications

Parameters and characteristics for this part

SpecificationLDA111S
Current - DC Forward (If) (Max)1 mA
Current Transfer Ratio (Max)30000 %
Current Transfer Ratio (Min)300 %
Input TypeDC
Mounting TypeSurface Mount
Number of Channels1
Operating Temperature85 °C
Operating Temperature-40 C
Output TypeDarlington with Base
Package / Case6-SMD, Gull Wing
Supplier Device Package6-SMD
Turn On / Turn Off Time (Typ)345 µs
Turn On / Turn Off Time (Typ)8 µs
Vce Saturation (Max)1 V
Voltage - Isolation3750 Vrms
Voltage - Output (Max)30 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$Updated
DigikeyTube 1$ 1.61<1d
50$ 0.93
100$ 0.86
500$ 0.74
1000$ 0.70
2000$ 0.66
5000$ 0.63
10000$ 0.60
MouserN/A 1$ 1.611m+
10$ 0.93
100$ 0.86
500$ 0.74
1000$ 0.66
5000$ 0.63
10000$ 0.60
NewarkEach (Supplied on Full Reel) 1$ 0.761m+
1000$ 0.73
2000$ 0.66
4000$ 0.60
6000$ 0.58
10000$ 0.56

CAD

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Description

General part information

LDA111 Series

Single and dual OptoMOS® products provide an optically isolated means of switching control circuits. Each package contains one or two phototransistors that are optically coupled with LEDs. Shunt resistors can be used to adjust the threshold current required to activate the output circuitry. The LDA contains sensors that allow for either AC or DC input circuits and single transistor or Darlington transistor outputs. Single and dual optocouplers are ideal for Telecom, Industrial Control and instrumentation circuits, where electrical isolation of control circuitry is crucial.