Optocouplers

An optocoupler IC, also known as an opto-isolator or photocoupler, is a semiconductor device which is used to couple isolated circuits. Within an optocoupler you will find a light emitter and a light sensor. Optocouplers usually come in a semiconductor package, such as SOIC or PDIP.

How does an optocoupler IC work?

Optocouplers work by transferring energy from one circuit to another circuit via an optical transmission path, while providing electrical isolation

The light emitter device can come in the form of an LED (light emitting diode) that produces IR or visible light, or a laser diode. The light emitter receives the input and converts it into a light signal. The light detector senses the light emitter and converts it back into an electrical signal.

Optocouplers are often used in high-voltage applications to block the high voltages and variations in voltage. This ensures that, if there is a spike in one part of a circuit, it will not affect other parts. Therefore they are ideal for applications which may experience variations in voltage.

Types of Optocoupler:

• Resistive

• Photodiode

• Phototransistor

• Bidirectional

Output Types

• CMOS

• Darlington

• IGBT Gate Drive

• Logic Gate

• MOSFET

• Photodarlington

• Phototransistor

• Single Transistor

• TRIAC

3500 Products showing for Optocouplers

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IXYS, CPC1303G Optocoupler RS Stock No. 135-8135P Mfr. Part No. CPC1303G Each (Supplied in a Tube) MYR4.198 Quantity	IXYS	-	-	-	-	-	-	-	-	-	200 μA	5000 Vrms	-	-	-	-	CPC
Toshiba, TLP292(GB AC Input Transistor Output Optocoupler, Surface Mount, 4-Pin SO RS Stock No. 796-5294P Mfr. Part No. TLP292(GB Each (Supplied in a Tube) MYR2.071 Quantity	Toshiba	-	Surface Mount	Transistor	1.4V	1	4	SO	AC	2µs	50 mA	3750 Vrms	600%	-	3µs	-	TLP
IXYS, CPC1301G Optocoupler RS Stock No. 135-7875 Mfr. Part No. CPC1301G Each (In a Tube of 100) MYR4.114 Quantity	IXYS	-	-	-	-	-	-	-	-	-	1 mA	5000 Vrms	-	-	-	-	CPC
Toshiba, TLP2309 AC Input Transistor Output Optocoupler, Surface Mount, 5-Pin SOIC RS Stock No. 796-5241P Mfr. Part No. TLP2309 Each (Supplied in a Tube) MYR3.895 Quantity	Toshiba	Logic Output	Surface Mount	Transistor	1.7V	1	5	SOIC	AC	-	20 mA	3750 Vrms	15%	-	-	-	TLP
onsemi, MCT62 DC Input Phototransistor Output Dual Optocoupler, Through Hole, 8-Pin PDIP RS Stock No. 671-1416P Mfr. Part No. MCT62 Each (Supplied in a Tube) MYR4.518 Quantity	onsemi	-	Through Hole	Phototransistor	1.5V	2	8	PDIP	DC	-	60 mA	5 kVrms	-	100%	-	-	MCT
IXYS, CPC1303G Optocoupler RS Stock No. 135-7879 Mfr. Part No. CPC1303G Each (In a Tube of 100) MYR3.56 Quantity	IXYS	-	-	-	-	-	-	-	-	-	200 μA	5000 Vrms	-	-	-	-	CPC
onsemi, FOD4108SDV DC Input Triac Output Optocoupler, Surface Mount, 6-Pin DIP RS Stock No. 124-1321 Mfr. Part No. FOD4108SDV Each (On a Reel of 1000) MYR11.095 Quantity	onsemi	Logic Output	Surface Mount	Triac	1.5V	1	6	DIP	DC	-	30 mA	5000 V ac	-	-	-	-	FOD
onsemi, MOC3072SVM Optocoupler, Surface Mount, 6-Pin SMT RS Stock No. 185-8023 Mfr. Part No. MOC3072SVM Each (In a Tube of 1000) MYR3.867 Quantity	onsemi	Logic Output	Surface Mount	-	1.5V	1	6	SMT	-	-	60 mA	4170 Vrms ac	-	-	-	-	MOC
onsemi, FODM611R2 Open Collector Output Optocoupler, Surface Mount, 5-Pin MFP RS Stock No. 186-8360P Mfr. Part No. FODM611R2 Each (Supplied on a Reel) MYR5.197 Quantity	onsemi	-	Surface Mount	Open Collector	1.5V	1	5	MFP	-	-	10 mA	3.75 kVrms	-	-	-	-	FODM
IXYS, LOC117S Optocoupler RS Stock No. 135-8082P Mfr. Part No. LOC117S Each (Supplied in a Tube) MYR14.46 Quantity	IXYS	-	-	-	-	-	-	-	-	-	-	3750 Vrms	-	-	-	-	LOC
onsemi, MCT62S DC Input Phototransistor Output Dual Optocoupler, Surface Mount, 8-Pin MDIP RS Stock No. 806-4144P Mfr. Part No. MCT62S Each (Supplied in a Tube) MYR2.078 Quantity	onsemi	-	Surface Mount	Phototransistor	1.5V	2	8	MDIP	DC	2.4µs	60 mA	5000 Vrms	100%	-	2.4µs	-	MCT
onsemi, 4N35M DC Input Transistor Output Optocoupler, Through Hole, 6-Pin PDIP RS Stock No. 671-1352P Mfr. Part No. 4N35M Each (Supplied in a Tube) MYR2.914 Quantity	onsemi	-	Through Hole	Transistor	1.5V	1	6	PDIP	DC	-	60 mA	7.5 kVrms	-	100%	-	-	4N35
onsemi, FODM3083R2 DC Input Triac Output Optocoupler, Surface Mount, 4-Pin MFP RS Stock No. 166-3460 Mfr. Part No. FODM3083R2 Each (On a Reel of 2500) MYR7.007 Quantity	onsemi	-	Surface Mount	Triac	1.5V	1	4	MFP	DC	-	60 mA	3.75 kVrms	-	-	-	-	FOD
Toshiba, TLP3542(F) DC Input MOSFET Output Dual Optocoupler, Through Hole, 5-Pin PDIP RS Stock No. 168-7599 Mfr. Part No. TLP3542(F) Each (In a Tube of 50) MYR11.226 Quantity	Toshiba	-	Through Hole	MOSFET	1.48V	2	5	PDIP	DC	-	30 mA	2.5 kVrms	-	-	-	-	TLP
Toshiba, TLP785F(GR-LF7,F(C DC Input Transistor Output Optocoupler, Surface Mount, 4-Pin DIP RS Stock No. 168-7832 Mfr. Part No. TLP785F(GR-LF7,F(C Each (In a Tube of 100) MYR1.426 Quantity	Toshiba	-	Surface Mount	Transistor	1.3V	1	4	DIP	DC	2µs	10 mA	5 kVrms	300%	-	3µs	-	TLP
onsemi, FOD8342V Push-Pull MOSFET Output Optocoupler, Surface Mount, 6-Pin SOP RS Stock No. 185-8006 Mfr. Part No. FOD8342V Each (In a Tube of 2000) MYR6.301 Quantity	onsemi	Logic Output	Surface Mount	Push-Pull MOSFET	1.8V	1	6	SOP	-	38ns	16 mA	5000 Vrms ac	-	-	24ns	-	FOD8342
Toshiba, TLP3558A(TP1,F(O DC Input MOSFET Output Optocoupler, Through Hole, 4-Pin DIP RS Stock No. 206-9776P Mfr. Part No. TLP3558A(TP1,F(O Each (Supplied on a Reel) MYR12.958 Quantity	Toshiba	-	Through Hole	MOSFET	1.8V	1	4	DIP	DC	-	-	-	-	-	-	-	TLP
onsemi, MOC3011M Triac Output Optocoupler, Through Hole, 6-Pin DIP RS Stock No. 184-1021 Mfr. Part No. MOC3011M Each (In a Tube of 1000) MYR1.343 Quantity	onsemi	-	Through Hole	Triac	1.5V	1	6	DIP	-	-	60 mA	4170 Vrms ac	-	-	-	-	MOC
onsemi, FODM217CV Optocoupler, Surface Mount, 4-Pin SOP RS Stock No. 185-8794P Mfr. Part No. FODM217CV Each (Supplied in a Tube) MYR2.028 Quantity	onsemi	Logic Output	Surface Mount	-	1.4V	1	4	SOP	-	3µs	50 mA	3750 Vrms ac	400%	200%	3µs	-	FODM217
onsemi, HCPL0531R2 DC Input Transistor Output Dual Optocoupler, Surface Mount, 8-Pin SOIC RS Stock No. 169-8786 Mfr. Part No. HCPL0531R2 Each (On a Reel of 2500) MYR4.465 Quantity	onsemi	Logic Output	Surface Mount	Transistor	1.8V	2	8	SOIC	DC	5ns	25 mA	2.5 kVrms	50%	-	-	-	HCPL

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