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: 297

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Part #

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

PLA171PTR
IXYS Integrated Circuits
1: $6.60
956In Stock

Mfr. Part No.
PLA171PTR

Mouser Part No
849-PLA171PTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

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Datasheet

956In Stock

Cut Tape

$6.60

$6.19

$5.83

$5.66

Reel

$4.97

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-8

MOSFET

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

CPC1330G
IXYS Integrated Circuits
1: $3.91
439In Stock
100Expected 10/08/2026

Mfr. Part No.
CPC1330G

Mouser Part No
849-CPC1330G

IXYS Integrated Circuits

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

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Datasheet

439In Stock

100Expected 10/08/2026

$3.91

$3.67

$3.26

$3.11

View

Min.: 1
Mult.: 1

PCB Mount

DIP-4

MOSFET

Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP

PAA191
IXYS Integrated Circuits
1: $14.61
96In Stock

Mfr. Part No.
PAA191

Mouser Part No
849-PAA191

IXYS Integrated Circuits

Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP

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Datasheet

96In Stock

$14.61

$13.02

$12.43

$12.00

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

PLA143STR
IXYS Integrated Circuits
1: $6.36
318In Stock

Mfr. Part No.
PLA143STR

Mouser Part No
849-PLA143STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

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Datasheet

318In Stock

Cut Tape

$6.36

$6.13

$5.73

$5.57

Reel

$4.60

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-6

MOSFET

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

CPC1972G
IXYS Integrated Circuits
1: $2.93
424In Stock

Mfr. Part No.
CPC1972G

Mouser Part No
849-CPC1972G

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

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Datasheet

424In Stock

$2.93

$2.29

$2.00

$1.91

View

Min.: 1
Mult.: 1

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

LAA100L
IXYS Integrated Circuits
1: $10.74
149In Stock

Mfr. Part No.
LAA100L

Mouser Part No
849-LAA100L

IXYS Integrated Circuits

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

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Datasheet

149In Stock

$10.74

$10.07

$8.95

$8.49

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

OMA160
IXYS Integrated Circuits
1: $6.65
234In Stock

Mfr. Part No.
OMA160

Mouser Part No
849-OMA160

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

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Datasheet

234In Stock

$6.65

$5.51

$5.15

$4.98

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

PLA172P
IXYS Integrated Circuits
1: $10.15
122In Stock

Mfr. Part No.
PLA172P

Mouser Part No
849-PLA172P

IXYS Integrated Circuits

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

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Datasheet

122In Stock

$10.15

$9.04

$8.64

$8.20

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

CPC1972GS
IXYS Integrated Circuits
1: $2.93
489In Stock

Mfr. Part No.
CPC1972GS

Mouser Part No
849-CPC1972GS

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

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Datasheet

489In Stock

$2.93

$2.41

$2.21

$2.03

$1.90

Min.: 1
Mult.: 1

SMD/SMT

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

LAA125S
IXYS Integrated Circuits
1: $8.04
152In Stock

Mfr. Part No.
LAA125S

Mouser Part No
849-LAA125S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

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Datasheet

152In Stock

$8.04

$7.50

$7.03

$6.79

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

LCA125
IXYS Integrated Circuits
1: $5.91
160In Stock

Mfr. Part No.
LCA125

Mouser Part No
849-LCA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

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Datasheet

160In Stock

$5.91

$5.49

$5.13

$4.95

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount 100V 300mA Double Pole Relay

LAA108S
IXYS Integrated Circuits
1: $5.32
274In Stock

Mfr. Part No.
LAA108S

Mouser Part No
849-LAA108S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 100V 300mA Double Pole Relay

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Datasheet

274In Stock

$5.32

$4.75

$4.53

$4.37

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

PLA143S
IXYS Integrated Circuits
1: $6.59
244In Stock

Mfr. Part No.
PLA143S

Mouser Part No
849-PLA143S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

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Datasheet

244In Stock

$6.59

$6.12

$5.74

$5.53

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA

PLA150S
IXYS Integrated Circuits
1: $8.76
137In Stock

Mfr. Part No.
PLA150S

Mouser Part No
849-PLA150S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA

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Datasheet

137In Stock

$8.76

$7.81

$7.46

$6.49

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

PLA160
IXYS Integrated Circuits
1: $7.73
213In Stock

Mfr. Part No.
PLA160

Mouser Part No
849-PLA160

IXYS Integrated Circuits

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

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Datasheet

213In Stock

$7.73

$7.18

$6.73

$6.48

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

PLA193S
IXYS Integrated Circuits
1: $6.43
294In Stock

Mfr. Part No.
PLA193S

Mouser Part No
849-PLA193S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

Learn More

Datasheet

294In Stock

$6.43

$5.73

$5.47

$5.28

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

CPC1006NTR
IXYS Integrated Circuits
1: $2.30
36,397In Stock

Mfr. Part No.
CPC1006NTR

Mouser Part No
849-CPC1006NTR

IXYS Integrated Circuits

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

Learn More

Datasheet

36,397In Stock

Cut Tape

$2.30

$2.06

$1.96

$1.89

Reel

$1.52

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay

CPC1014NTR
IXYS Integrated Circuits
1: $3.03
36,834In Stock
38,000Expected 19/10/2026

Mfr. Part No.
CPC1014NTR

Mouser Part No
849-CPC1014NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay

Learn More

Datasheet

36,834In Stock

38,000Expected 19/10/2026

Cut Tape

$3.03

$2.71

$2.57

$2.49

Reel

$2.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount SPNO RELAY

CPC1017N
IXYS Integrated Circuits
1: $0.86
293,698In Stock

Mfr. Part No.
CPC1017N

Mouser Part No
849-CPC1017N

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPNO RELAY

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Datasheet

293,698In Stock

$0.86

$0.769

$0.74

$0.591

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay

CPC1017NTR
IXYS Integrated Circuits
1: $1.93
53,597In Stock
68,000Expected 11/11/2026

Mfr. Part No.
CPC1017NTR

Mouser Part No
849-CPC1017NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay

Learn More

Datasheet

53,597In Stock

68,000Expected 11/11/2026

Cut Tape

$1.93

$1.73

$1.65

$1.59

Reel

$1.28

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1018NTR
IXYS Integrated Circuits
1: $4.92
30,509In Stock
22,000Expected 07/10/2026

Mfr. Part No.
CPC1018NTR

Mouser Part No
849-CPC1018NTR

IXYS Integrated Circuits

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

Learn More

Datasheet

30,509In Stock

22,000Expected 07/10/2026

Cut Tape

$4.92

$4.38

$4.19

$4.04

View

Reel

$3.35

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

CPC1019N
IXYS Integrated Circuits
1: $3.93
9,072In Stock

Mfr. Part No.
CPC1019N

Mouser Part No
849-CPC1019N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

Learn More

Datasheet

9,072In Stock

$3.93

$3.85

$3.60

$3.45

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

CPC1019NTR
IXYS Integrated Circuits
1: $3.91
72,931In Stock

Mfr. Part No.
CPC1019NTR

Mouser Part No
849-CPC1019NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

Learn More

Datasheet

72,931In Stock

Cut Tape

$3.91

$3.48

$3.33

$3.20

View

Reel

$2.66

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay

CPC1002N
IXYS Integrated Circuits
1: $2.61
42,634In Stock

Mfr. Part No.
CPC1002N

Mouser Part No
849-CPC1002N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay

Learn More

Datasheet

42,634In Stock

$2.61

$2.39

$2.26

$2.18

$1.87

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

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

CPC1008N
IXYS Integrated Circuits
1: $2.97
76,150In Stock

Mfr. Part No.
CPC1008N

Mouser Part No
849-CPC1008N

IXYS Integrated Circuits

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

Learn More

Datasheet

76,150In Stock

$2.97

$2.73

$2.54

$2.46

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

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

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