.hide-partial { max-height: none; } .show-more { display: none; }

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.

All Results (297)

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

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

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

Learn More

Datasheet

572In Stock

$7.80

$6.95

$6.63

$6.40

View

Min.: 1
Mult.: 1

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

CPC1727J
IXYS Integrated Circuits
1: $23.05
370In Stock

Mfr. Part #
CPC1727J

Mouser Part #
849-CPC1727J

IXYS Integrated Circuits

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

Learn More

Datasheet

370In Stock

$23.05

$20.59

$19.65

$18.94

View

Min.: 1
Mult.: 1

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

CPC1788J
IXYS Integrated Circuits
1: $26.85
129In Stock

Mfr. Part #
CPC1788J

Mouser Part #
849-CPC1788J

IXYS Integrated Circuits

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

Learn More

Datasheet

129In Stock

$26.85

$24.51

$23.39

$22.35

View

Min.: 1
Mult.: 1

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

CPC1916Y
IXYS Integrated Circuits
1: $12.28
292In Stock
1,400On Order

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

1,400On Order

$12.28

$11.82

$11.28

$10.89

View

Min.: 1
Mult.: 1

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

Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch

CPC1963G
IXYS Integrated Circuits
1: $12.61
202In Stock

Mfr. Part #
CPC1963G

Mouser Part #
849-CPC1963G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch

Learn More

Datasheet

202In Stock

$12.61

$11.21

$10.65

$10.18

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: $9.82
1,481In 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

1,481In Stock

1,075Expected 12/18/2026

$9.82

$8.75

$8.35

$8.06

View

Min.: 1
Mult.: 1

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

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

CPC1972GSTR
IXYS Integrated Circuits
1: $2.80
3,684In Stock

Mfr. Part #
CPC1972GSTR

Mouser Part #
849-CPC1972GSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,684In Stock

Cut Tape

$2.80

$2.30

$2.11

$1.86

Reel

$1.76

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

CPC1976Y
IXYS Integrated Circuits
1: $6.93
2,082In Stock
5,975On Order

Mfr. Part #
CPC1976Y

Mouser Part #
849-CPC1976Y

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

Learn More

Datasheet

2,082In Stock

5,975On Order

$6.93

$4.94

$4.51

View

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

CPC1976YX6
IXYS Integrated Circuits
1: $10.00
356In Stock

Mfr. Part #
CPC1976YX6

Mouser Part #
849-CPC1976YX6

IXYS Integrated Circuits

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

Learn More

Datasheet

356In Stock

$10.00

$8.22

$7.02

$6.40

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST i4-PAC 600V

CPC1977J
IXYS Integrated Circuits
1: $23.29
808In Stock
425Expected 10/2/2026

Mfr. Part #
CPC1977J

Mouser Part #
849-CPC1977J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST i4-PAC 600V

Learn More

Datasheet

808In Stock

425Expected 10/2/2026

$23.29

$20.87

$19.81

$19.13

View

Min.: 1
Mult.: 1

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

CPC1978J
IXYS Integrated Circuits
1: $25.48
86In Stock
550On Order

Mfr. Part #
CPC1978J

Mouser Part #
849-CPC1978J

IXYS Integrated Circuits

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

Learn More

Datasheet

86In Stock

550On Order

$25.48

$23.05

$21.92

$20.91

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A

CPC2907B
IXYS Integrated Circuits
1: $20.13
211In Stock

Mfr. Part #
CPC2907B

Mouser Part #
849-CPC2907B

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A

Learn More

Datasheet

211In Stock

$20.13

$17.93

$17.12

$16.53

View

Min.: 1
Mult.: 1

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

LAA108
IXYS Integrated Circuits
1: $5.32
381In Stock

Mfr. Part #
LAA108

Mouser Part #
849-LAA108

IXYS Integrated Circuits

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

Learn More

Datasheet

381In Stock

$5.32

$4.75

$4.53

$4.37

View

Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: $5.09
2,553In Stock
2,000Expected 2/12/2027

Mfr. Part #
LAA108STR

Mouser Part #
849-LAA108STR

IXYS Integrated Circuits

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

Learn More

Datasheet

2,553In Stock

2,000Expected 2/12/2027

Cut Tape

$5.09

$4.54

$4.33

$4.18

Reel

$3.56

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA110S
IXYS Integrated Circuits
1: $9.19
2,373In Stock
100Expected 1/13/2027

Mfr. Part #
LAA110S

Mouser Part #
849-LAA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

2,373In Stock

100Expected 1/13/2027

$9.19

$8.19

$7.82

$7.54

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST 1 Form A

LAA127
IXYS Integrated Circuits
1: $12.10
611In Stock

Mfr. Part #
LAA127

Mouser Part #
849-LAA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST 1 Form A

Learn More

Datasheet

611In Stock

$12.10

$10.79

$10.30

$9.94

View

Min.: 1
Mult.: 1

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

LAA710
IXYS Integrated Circuits
1: $20.71
748In Stock

Mfr. Part #
LAA710

Mouser Part #
849-LAA710

IXYS Integrated Circuits

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

Learn More

Datasheet

748In Stock

$20.71

$18.41

$17.49

$16.56

View

Min.: 1
Mult.: 1

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

LAA710STR
IXYS Integrated Circuits
1: $18.48
126In Stock
3,000On Order

Mfr. Part #
LAA710STR

Mouser Part #
849-LAA710STR

IXYS Integrated Circuits

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

Learn More

Datasheet

126In Stock

3,000On Order

Cut Tape

$18.48

$16.46

$15.72

$15.18

View

Reel

$13.04

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA110
IXYS Integrated Circuits
1: $3.92
4,791In Stock
17,250On Order

Mfr. Part #
LCA110

Mouser Part #
849-LCA110

IXYS Integrated Circuits

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

Learn More

Datasheet

4,791In Stock

17,250On Order

$3.92

$3.49

$3.25

$3.03

View

Min.: 1
Mult.: 1

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

LCA110L
IXYS Integrated Circuits
1: $4.18
1,406In Stock

Mfr. Part #
LCA110L

Mouser Part #
849-LCA110L

IXYS Integrated Circuits

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

Learn More

Datasheet

1,406In Stock

$4.18

$3.82

$3.68

$3.54

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: $6.21
3,671In Stock

Mfr. Part #
LCA120

Mouser Part #
849-LCA120

IXYS Integrated Circuits

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

Learn More

Datasheet

3,671In Stock

$6.21

$5.53

$5.29

$5.21

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA

LCA120STR
IXYS Integrated Circuits
1: $6.03
2,246In Stock

Mfr. Part #
LCA120STR

Mouser Part #
849-LCA120STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA

Learn More

Datasheet

2,246In Stock

Cut Tape

$6.03

$5.38

$5.14

$4.96

Reel

$4.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

All Results (297)

Customer Service Office

Company

Resources

Support

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

All Results (297)

Electromechanical

Optoelectronics