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 SPST-NO 6PIN DIP

PLA140
IXYS Integrated Circuits
1: $10.06
2,942In Stock
3,700Expected 10/26/2026

Mfr. Part #
PLA140

Mouser Part #
849-PLA140

IXYS Integrated Circuits

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

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Datasheet

2,942In Stock

3,700Expected 10/26/2026

$10.06

$9.43

$8.38

$7.95

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: $6.40
8,381In Stock
32,000Expected 1/25/2027

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

8,381In Stock

32,000Expected 1/25/2027

Cut Tape

$6.40

$5.71

$5.45

$5.26

Reel

$4.50

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

MOSFET

Solid State Relays - PCB Mount 600V, 1A AC Solid State Relay

CPC1965G
IXYS Integrated Circuits
1: $8.47
13,996In Stock

Mfr. Part #
CPC1965G

Mouser Part #
849-CPC1965G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V, 1A AC Solid State Relay

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Datasheet

13,996In Stock

$8.47

$7.55

$6.80

$6.56

View

Min.: 1
Mult.: 1

PCB Mount

SCR

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

CPC1009NTR
IXYS Integrated Circuits
1: $2.93
2,218In 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

2,218In Stock

Cut Tape

$2.93

$2.67

$2.46

$2.39

Reel

$2.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1010N
IXYS Integrated Circuits
1: $4.09
5,040In Stock

Mfr. Part #
CPC1010N

Mouser Part #
849-CPC1010N

IXYS Integrated Circuits

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

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Datasheet

5,040In Stock

$4.09

$3.65

$3.48

$3.35

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

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

CPC1016N
IXYS Integrated Circuits
1: $3.18
3,946In 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

3,946In Stock

$3.18

$2.83

$2.70

$2.60

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: $3.76
3,642In Stock

Mfr. Part #
CPC1030NTR

Mouser Part #
849-CPC1030NTR

IXYS Integrated Circuits

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

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Datasheet

3,642In Stock

Cut Tape

$3.76

$3.36

$3.21

$3.06

View

Reel

$2.54

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1230N
IXYS Integrated Circuits
1: $3.76
1,053In Stock
700Expected 8/31/2026

Mfr. Part #
CPC1230N

Mouser Part #
849-CPC1230N

IXYS Integrated Circuits

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

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Datasheet

1,053In Stock

700Expected 8/31/2026

$3.76

$3.43

$3.16

$3.03

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: $3.48
3,245In Stock

Mfr. Part #
CPC1230NTR

Mouser Part #
849-CPC1230NTR

IXYS Integrated Circuits

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

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Datasheet

3,245In Stock

Cut Tape

$3.48

$3.26

$2.90

$2.77

View

Reel

$2.39

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

PCB Mount

SOP-4

MOSFET

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

CPC1330GR
IXYS Integrated Circuits
1: $3.56
1,570In Stock
500Expected 10/30/2026

Mfr. Part #
CPC1330GR

Mouser Part #
849-CPC1330GR

IXYS Integrated Circuits

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

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Datasheet

1,570In Stock

500Expected 10/30/2026

$3.56

$3.40

$3.25

$3.12

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-4

MOSFET

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

CPC1393G
IXYS Integrated Circuits
1: $4.75
1,505In Stock

Mfr. Part #
CPC1393G

Mouser Part #
849-CPC1393G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

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Datasheet

1,505In Stock

$4.75

$4.24

$4.05

$3.91

View

Min.: 1
Mult.: 1

PCB Mount

DIP-4

MOSFET

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

CPC1394GRTR
IXYS Integrated Circuits
1: $4.54
1,215In Stock
5,000On Order

Mfr. Part #
CPC1394GRTR

Mouser Part #
849-CPC1394GRTR

IXYS Integrated Circuits

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

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Datasheet

1,215In Stock

5,000On Order

Cut Tape

$4.54

$4.05

$3.87

$3.73

Reel

$3.19

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

MOSFET

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

CPC1510GSTR
IXYS Integrated Circuits
1: $6.71
2,240In Stock
5,000Expected 1/22/2027

Mfr. Part #
CPC1510GSTR

Mouser Part #
849-CPC1510GSTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

Learn More

Datasheet

2,240In Stock

5,000Expected 1/22/2027

Cut Tape

$6.71

$6.14

$5.65

$5.41

View

Reel

$4.66

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP

CPC1593G
IXYS Integrated Circuits
1: $6.52
1,067In Stock

Mfr. Part #
CPC1593G

Mouser Part #
849-CPC1593G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP

Learn More

Datasheet

1,067In Stock

$6.52

$5.81

$5.55

$5.35

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM

CPC1593GS
IXYS Integrated Circuits
1: $6.52
984In Stock

Mfr. Part #
CPC1593GS

Mouser Part #
849-CPC1593GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM

Learn More

Datasheet

984In Stock

$6.52

$5.81

$5.55

$5.35

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

CPC1708J
IXYS Integrated Circuits
1: $17.52
552In Stock

Mfr. Part #
CPC1708J

Mouser Part #
849-CPC1708J

IXYS Integrated Circuits

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

Learn More

Datasheet

552In Stock

$17.52

$15.62

$14.40

$13.83

$12.87

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount 250V Single Pole DC Power Relay

CPC1726Y
IXYS Integrated Circuits
1: $7.80
572In Stock

Mfr. Part #
CPC1726Y

Mouser Part #
849-CPC1726Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 250V Single Pole DC Power Relay

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Datasheet

572In Stock

$7.80

$6.95

$6.63

$6.40

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

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

CPC1727J
IXYS Integrated Circuits
1: $23.05
368In Stock

Mfr. Part #
CPC1727J

Mouser Part #
849-CPC1727J

IXYS Integrated Circuits

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

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Datasheet

368In Stock

$23.05

$20.59

$19.65

$18.94

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

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

CPC1788J
IXYS Integrated Circuits
1: $27.67
100Expected 9/30/2026

Mfr. Part #
CPC1788J

Mouser Part #
849-CPC1788J

IXYS Integrated Circuits

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

Learn More

Datasheet

100Expected 9/30/2026

$27.67

$25.48

$24.23

$23.02

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

CPC1907B
IXYS Integrated Circuits
1: $11.69
1,912In Stock
12,100On Order

Mfr. Part #
CPC1907B

Mouser Part #
849-CPC1907B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

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Datasheet

1,912In Stock

12,100On Order

$11.69

$10.59

$10.11

$9.76

View

Min.: 1
Mult.: 1

PCB Mount

SOIC-8

MOSFET

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

CPC1916Y
IXYS Integrated Circuits
1: $12.28
292In Stock
800Expected 12/18/2026

Mfr. Part #
CPC1916Y

Mouser Part #
849-CPC1916Y

IXYS Integrated Circuits

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

Learn More

Datasheet

292In Stock

800Expected 12/18/2026

$12.28

$11.82

$11.28

$10.89

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

MOSFET

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

CPC1927J
IXYS Integrated Circuits
1: $31.80
238In Stock

Mfr. Part #
CPC1927J

Mouser Part #
849-CPC1927J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

Learn More

Datasheet

238In Stock

$31.80

$28.56

$27.26

$26.32

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

MOSFET

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: $9.82
1,431In Stock
1,075Expected 12/18/2026

Mfr. Part #
CPC1966B

Mouser Part #
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

Learn More

Datasheet

1,431In Stock

1,075Expected 12/18/2026

$9.82

$8.75

$8.35

$8.06

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

SCR

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

CPC1968J
IXYS Integrated Circuits
1: $44.48
301In Stock
1,050On Order

Mfr. Part #
CPC1968J

Mouser Part #
849-CPC1968J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

Learn More

Datasheet

301In Stock

1,050On Order

$44.48

$39.62

$37.82

$37.18

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

MOSFET

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

CPC1972GSTR
IXYS Integrated Circuits
1: $2.80
3,554In Stock

Mfr. Part #
CPC1972GSTR

Mouser Part #
849-CPC1972GSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,554In Stock

Cut Tape

$2.80

$2.30

$2.12

$1.94

Reel

$1.84

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

SMD/SMT

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

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