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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Results: 298

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Part #

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

CPC1984Y
IXYS Integrated Circuits
1: $13.67
6,083In Stock

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

6,083In Stock

$13.67

$12.18

$11.63

$11.22

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

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

CPC1998J
IXYS Integrated Circuits
1: $17.36
5,399In Stock

Mfr. Part #
CPC1998J

Mouser Part #
849-CPC1998J

IXYS Integrated Circuits

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

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Datasheet

5,399In Stock

$17.36

$15.55

$13.58

$13.38

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

SCR

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

LCA110
IXYS Integrated Circuits
1: $3.32
16,912In Stock

Mfr. Part #
LCA110

Mouser Part #
849-LCA110

IXYS Integrated Circuits

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

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Datasheet

16,912In Stock

$3.32

$2.50

$2.40

$2.33

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA110STR
IXYS Integrated Circuits
1: $2.99
14,028In Stock

Mfr. Part #
LCA110STR

Mouser Part #
849-LCA110STR

IXYS Integrated Circuits

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

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Datasheet

14,028In Stock

Cut Tape

$2.99

$2.81

$2.68

$2.64

Reel

$2.17

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

PCB Mount

SMD DIP-6

MOSFET

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

LCA701S
IXYS Integrated Circuits
1: $8.26
5,051In 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

5,051In Stock

$8.26

$6.77

$6.51

$6.22

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: $7.29
6,823In 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

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Datasheet

6,823In Stock

Cut Tape

$7.29

$6.08

$5.77

$5.50

Reel

$5.12

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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: $8.65
10,054In 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

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Datasheet

10,054In Stock

Cut Tape

$8.65

$7.11

$6.88

$6.56

View

Reel

$5.61

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

PCB Mount

SMD DIP-6

MOSFET

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

PLA140
IXYS Integrated Circuits
1: $7.39
5,171In Stock
900Expected 2026-02-13

Mfr. Part #
PLA140

Mouser Part #
849-PLA140

IXYS Integrated Circuits

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

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Datasheet

5,171In Stock

900Expected 2026-02-13

$7.39

$6.60

$6.31

$5.83

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

PLA170STR
IXYS Integrated Circuits
1: $5.13
19,327In Stock

Mfr. Part #
PLA170STR

Mouser Part #
849-PLA170STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

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Datasheet

19,327In Stock

Cut Tape

$5.13

$4.57

$4.37

$4.22

View

Reel

$3.63

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

PCB Mount

MOSFET

Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP

CPC1006NTR
IXYS Integrated Circuits
1: $1.78
19,004In Stock

Mfr. Part #
CPC1006NTR

Mouser Part #
849-CPC1006NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP

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Datasheet

19,004In Stock

Cut Tape

$1.78

$1.53

$1.33

$1.18

Reel

$1.05

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay

CPC1004NTR
IXYS Integrated Circuits
1: $2.81
3,508In Stock
4,000Expected 2026-08-17

Mfr. Part #
CPC1004NTR

Mouser Part #
849-CPC1004NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay

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Datasheet

3,508In Stock

4,000Expected 2026-08-17

Cut Tape

$2.81

$2.50

$2.39

$2.31

Reel

$1.86

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR

CPC1009N
IXYS Integrated Circuits
1: $2.54
5,786In Stock

Mfr. Part #
CPC1009N

Mouser Part #
849-CPC1009N

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR

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Datasheet

5,786In Stock

$2.54

$2.33

$2.17

$2.09

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR

CPC1009NTR
IXYS Integrated Circuits
1: $2.43
5,299In Stock

Mfr. Part #
CPC1009NTR

Mouser Part #
849-CPC1009NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR

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Datasheet

5,299In Stock

Cut Tape

$2.43

$2.17

$2.08

$2.00

View

Reel

$1.60

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1016N
IXYS Integrated Circuits
1: $2.50
5,582In Stock

Mfr. Part #
CPC1016N

Mouser Part #
849-CPC1016N

IXYS Integrated Circuits

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

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Datasheet

5,582In Stock

$2.50

$2.22

$2.12

$2.05

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A

CPC1020N
IXYS Integrated Circuits
1: $4.68
5,039In Stock

Mfr. Part #
CPC1020N

Mouser Part #
849-CPC1020N

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A

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Datasheet

5,039In Stock

$4.68

$4.36

$4.19

$4.08

$3.55

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

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

CPC1025N
IXYS Integrated Circuits
1: $2.65
2,600In Stock
6,400On Order

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

2,600In Stock

6,400On Order

$2.65

$2.19

$2.11

$2.00

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

CPC1030N
IXYS Integrated Circuits
1: $2.74
3,422In Stock
1,400Expected 2026-08-04

Mfr. Part #
CPC1030N

Mouser Part #
849-CPC1030N

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

Learn More

Datasheet

3,422In Stock

1,400Expected 2026-08-04

$2.74

$2.48

$2.39

$2.31

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

CPC1030NTR
IXYS Integrated Circuits
1: $3.04
5,758In Stock

Mfr. Part #
CPC1030NTR

Mouser Part #
849-CPC1030NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

Learn More

Datasheet

5,758In Stock

Cut Tape

$3.04

$2.79

$2.57

$2.48

Reel

$2.14

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay

CPC1035NTR
IXYS Integrated Circuits
1: $2.64
8,002In Stock
4,000Expected 2026-05-04

Mfr. Part #
CPC1035NTR

Mouser Part #
849-CPC1035NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay

Learn More

Datasheet

8,002In Stock

4,000Expected 2026-05-04

Cut Tape

$2.64

$2.46

$1.97

$1.75

Reel

$1.48

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1225NTR
IXYS Integrated Circuits
1: $2.82
3,597In Stock

Mfr. Part #
CPC1225NTR

Mouser Part #
849-CPC1225NTR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,597In Stock

Cut Tape

$2.82

$2.53

$2.42

$2.33

Reel

$1.92

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

CPC1230N
IXYS Integrated Circuits
1: $2.70
1,985In Stock

Mfr. Part #
CPC1230N

Mouser Part #
849-CPC1230N

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

Learn More

Datasheet

1,985In Stock

$2.70

$2.51

$2.45

$2.37

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

CPC1230NTR
IXYS Integrated Circuits
1: $2.74
4,355In Stock

Mfr. Part #
CPC1230NTR

Mouser Part #
849-CPC1230NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

Learn More

Datasheet

4,355In Stock

Cut Tape

$2.74

$2.45

$2.34

$2.26

Reel

$1.81

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation

CPC1394GRTR
IXYS Integrated Circuits
1: $3.70
4,070In Stock
2,000Expected 2026-05-07

Mfr. Part #
CPC1394GRTR

Mouser Part #
849-CPC1394GRTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation

Learn More

Datasheet

4,070In Stock

2,000Expected 2026-05-07

Cut Tape

$3.70

$3.32

$3.16

$3.05

Reel

$2.36

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

PCB Mount

MOSFET

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

CPC1540GS
IXYS Integrated Circuits
1: $4.74
3,368In Stock

Mfr. Part #
CPC1540GS

Mouser Part #
849-CPC1540GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

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Datasheet

3,368In Stock

$4.74

$4.34

$4.00

$3.26

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

CPC1560GS
IXYS Integrated Circuits
1: $6.23
5,361In Stock

Mfr. Part #
CPC1560GS

Mouser Part #
849-CPC1560GS

IXYS Integrated Circuits

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

Learn More

Datasheet

5,361In Stock

$6.23

$5.56

$5.32

$5.12

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

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

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