Optocouplers / Photocouplers

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OptoMOS 1-Form-A (SPST-NO) Solid State Relays

Littelfuse offers an extensive portfolio of 1-Form-A (SPST-NO) Solid State Relays (SSRs) in various PC board-mount package sizes. These relays feature load current ratings from 50mA to 9A (20A with heat sink), and 30V to 1000V load voltage ratings. 1-Form-A relays are available in SOP-4, SIP-4, SMD DIP-4, SMD DIP-6, SOIC-16, Power i4-PAC, and ISOPLUS-264 packages. Fault-protected SSRs with active current limit and thermal shutdown are also available from Littelfuse to offer robust and rugged switching solutions.

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Types of Optocouplers / Photocouplers

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Part #

Solid State Relays - PCB Mount 250V, 1-Form-A SSR

CPC1010NTR
IXYS Integrated Circuits
1: $3.91
11,284In Stock

Mfr. Part #
CPC1010NTR

Mouser Part #
849-CPC1010NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 250V, 1-Form-A SSR

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Datasheet

11,284In Stock

Cut Tape

$3.91

$3.48

$3.33

$3.19

View

Reel

$2.73

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay

CPC1016NTR
IXYS Integrated Circuits
1: $3.03
22,193In Stock

Mfr. Part #
CPC1016NTR

Mouser Part #
849-CPC1016NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay

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Datasheet

22,193In Stock

Cut Tape

$3.03

$2.71

$2.58

$2.49

Reel

$2.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay

CPC1020NTR
IXYS Integrated Circuits
1: $6.06
20,631In Stock
100,000On Order

Mfr. Part #
CPC1020NTR

Mouser Part #
849-CPC1020NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay

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Datasheet

20,631In Stock

100,000On Order

Cut Tape

$6.06

$5.40

$5.16

$4.98

View

Reel

$4.25

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

CPC1025N
IXYS Integrated Circuits
1: $2.87
7,469In Stock
400Expected 1/6/2027

Mfr. Part #
CPC1025N

Mouser Part #
849-CPC1025N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

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Datasheet

7,469In Stock

400Expected 1/6/2027

$2.87

$2.63

$2.46

$2.39

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

CPC1025NTR
IXYS Integrated Circuits
1: $3.17
121,842In Stock

Mfr. Part #
CPC1025NTR

Mouser Part #
849-CPC1025NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

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Datasheet

121,842In Stock

Cut Tape

$3.17

$2.94

$2.69

$2.60

Reel

$2.17

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay

CPC1330GRTR
IXYS Integrated Circuits
1: $3.64
11,831In Stock

Mfr. Part #
CPC1330GRTR

Mouser Part #
849-CPC1330GRTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay

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Datasheet

11,831In Stock

Cut Tape

$3.64

$3.25

$3.10

$2.97

Reel

$2.55

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay

CPC1560GS
IXYS Integrated Circuits
1: $8.37
5,014In Stock
1,000Expected 4/12/2027

Mfr. Part #
CPC1560GS

Mouser Part #
849-CPC1560GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay

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Datasheet

5,014In Stock

1,000Expected 4/12/2027

$8.37

$7.85

$6.98

$6.62

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

CPC1706Y
IXYS Integrated Circuits
1: $7.35
7,283In Stock

Mfr. Part #
CPC1706Y

Mouser Part #
849-CPC1706Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

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Datasheet

7,283In Stock

$7.35

$6.55

$6.20

$5.94

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1709J
IXYS Integrated Circuits
1: $17.80
1,641In Stock
3,100On Order

Mfr. Part #
CPC1709J

Mouser Part #
849-CPC1709J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

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Datasheet

1,641In Stock

3,100On Order

$17.80

$15.86

$14.64

$14.18

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1718J
IXYS Integrated Circuits
1: $18.91
1,538In Stock

Mfr. Part #
CPC1718J

Mouser Part #
849-CPC1718J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

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Datasheet

1,538In Stock

$18.91

$16.85

$16.08

$15.53

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay

CPC1918J
IXYS Integrated Circuits
1: $22.25
7,253In Stock
7,550Expected 1/25/2027

Mfr. Part #
CPC1918J

Mouser Part #
849-CPC1918J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay

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Datasheet

7,253In Stock

7,550Expected 1/25/2027

$22.25

$19.90

$18.99

$18.28

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

MOSFET

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

CPC1966YX6
IXYS Integrated Circuits
1: $13.93
2,165In Stock

Mfr. Part #
CPC1966YX6

Mouser Part #
849-CPC1966YX6

IXYS Integrated Circuits

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

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Datasheet

2,165In Stock

$13.93

$12.41

$11.84

$11.38

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

SCR

Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP

CPC1984Y
IXYS Integrated Circuits
1: $17.34
3,987In Stock
1,600On Order

Mfr. Part #
CPC1984Y

Mouser Part #
849-CPC1984Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP

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Datasheet

3,987In Stock

1,600On Order

$17.34

$15.45

$14.75

$14.24

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay

CPC1988J
IXYS Integrated Circuits
1: $39.75
608In Stock

Mfr. Part #
CPC1988J

Mouser Part #
849-CPC1988J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay

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Datasheet

608In Stock

$39.75

$38.77

$37.01

$35.74

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount SP AC Solid State Power Switch

CPC1998J
IXYS Integrated Circuits
1: $21.75
4,557In Stock
2,725On Order

Mfr. Part #
CPC1998J

Mouser Part #
849-CPC1998J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP AC Solid State Power Switch

Learn More

Datasheet

4,557In Stock

2,725On Order

$21.75

$19.75

$18.81

$17.99

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

SCR

Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole

LAA110STR
IXYS Integrated Circuits
1: $8.78
11,689In Stock

Mfr. Part #
LAA110STR

Mouser Part #
849-LAA110STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole

Learn More

Datasheet

11,689In Stock

Cut Tape

$8.78

$7.82

$7.47

$7.22

View

Reel

$5.89

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole

LAA710S
IXYS Integrated Circuits
1: $20.70
5,036In Stock

Mfr. Part #
LAA710S

Mouser Part #
849-LAA710S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole

Learn More

Datasheet

5,036In Stock

$20.70

$18.40

$17.48

$16.56

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA

LCA110STR
IXYS Integrated Circuits
1: $4.07
12,021In Stock
4,000Expected 10/2/2026

Mfr. Part #
LCA110STR

Mouser Part #
849-LCA110STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA

Learn More

Datasheet

12,021In Stock

4,000Expected 10/2/2026

Cut Tape

$4.07

$3.63

$3.47

$3.34

Reel

$2.80

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

LCA701S
IXYS Integrated Circuits
1: $10.31
7,326In Stock

Mfr. Part #
LCA701S

Mouser Part #
849-LCA701S

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

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Datasheet

7,326In Stock

$10.31

$9.19

$8.77

$8.34

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

LCA701STR
IXYS Integrated Circuits
1: $9.85
2,664In Stock

Mfr. Part #
LCA701STR

Mouser Part #
849-LCA701STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

Learn More

Datasheet

2,664In Stock

Cut Tape

$9.85

$8.78

$8.38

$8.09

View

Reel

$6.92

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

MOSFET

Solid State Relays - PCB Mount SPST-NO 6PIN DIP

LCA710
IXYS Integrated Circuits
1: $9.99
5,488In Stock
5,150On Order

Mfr. Part #
LCA710

Mouser Part #
849-LCA710

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 6PIN DIP

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Datasheet

5,488In Stock

5,150On Order

$9.99

$9.40

$8.42

$8.11

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount SPST-NO 6 Pin SMD

LCA710S
IXYS Integrated Circuits
1: $9.67
3,381In Stock
3,500On Order

Mfr. Part #
LCA710S

Mouser Part #
849-LCA710S

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 6 Pin SMD

Learn More

Datasheet

3,381In Stock

3,500On Order

$9.67

$8.62

$8.23

$7.15

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET

LCA710STR
IXYS Integrated Circuits
1: $9.24
7,057In Stock

Mfr. Part #
LCA710STR

Mouser Part #
849-LCA710STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET

Learn More

Datasheet

7,057In Stock

Cut Tape

$9.24

$8.23

$7.86

$7.59

View

Reel

$6.47

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

LCA715S
IXYS Integrated Circuits
1: $11.31
3,628In Stock

Mfr. Part #
LCA715S

Mouser Part #
849-LCA715S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

Learn More

Datasheet

3,628In Stock

$11.31

$10.08

$9.63

$8.84

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

LCA715STR
IXYS Integrated Circuits
1: $10.81
11,759In Stock

Mfr. Part #
LCA715STR

Mouser Part #
849-LCA715STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

Learn More

Datasheet

11,759In Stock

Cut Tape

$10.81

$9.63

$9.20

$8.88

View

Reel

$7.38

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-6

MOSFET

OptoMOS 1-Form-A (SPST-NO) Solid State Relays

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