Specification	LDA203

Current - DC Forward (If) (Max)	1 mA
Current Transfer Ratio (Max)	1000 %
Current Transfer Ratio (Min)	33 %
Input Type	DC
Mounting Type	Through Hole
Number of Channels	2
Operating Temperature	85 °C
Operating Temperature	-40 C
Output Type	Transistor
Package / Case	8-DIP (0.300", 7.62mm)
Supplier Device Package	8-DIP
Turn On / Turn Off Time (Typ)	20 µs, 7 µs
Vce Saturation (Max)	500 mV
Voltage - Isolation	3750 Vrms
Voltage - Output (Max)	30 V

LDA203 Series

Part	Current Transfer Ratio (Min)	Mounting Type	Output Type	Operating Temperature	Operating Temperature	Current - DC Forward (If) (Max)	Input Type	Current Transfer Ratio (Max)	Turn On / Turn Off Time (Typ)	Vce Saturation (Max)	Voltage - Output (Max)	Voltage - Isolation	Number of Channels	Supplier Device Package	Package / Case
LITTELFUSE LDA203S	33 %	Surface Mount	Transistor	85 °C	-40 C	1 mA	DC	1000 %	7 µs 20 µs	500 mV	30 V	3750 Vrms	2	8-SMD
LITTELFUSE LDA203	33 %	Through Hole	Transistor	85 °C	-40 C	1 mA	DC	1000 %	7 µs 20 µs	500 mV	30 V	3750 Vrms	2	8-DIP	8-DIP (0.300" 7.62mm)

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 0.00	1m+

CAD

3D models and CAD resources for this part

Description

General part information

LDA203 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.