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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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Part #

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

CPC1706Y
IXYS Integrated Circuits
1: $5.43
4,192In 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

4,192In Stock

$5.43

$4.56

$4.39

$4.19

View

Min.: 1
Mult.: 1

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

CPC1708J
IXYS Integrated Circuits
1: $17.07
607In Stock

Mfr. Part #
CPC1708J

Mouser Part #
849-CPC1708J

IXYS Integrated Circuits

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

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Datasheet

607In Stock

$17.07

$16.00

$13.41

$12.94

View

Min.: 1
Mult.: 1

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

CPC1709J
IXYS Integrated Circuits
1: $13.70
2,085In Stock

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

2,085In Stock

$13.70

$12.18

$10.87

$10.65

View

Min.: 1
Mult.: 1

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

CPC1718J
IXYS Integrated Circuits
1: $14.66
2,032In 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

2,032In Stock

$14.66

$13.07

$12.46

$12.03

View

Min.: 1
Mult.: 1

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

CPC1727J
IXYS Integrated Circuits
1: $18.51
543In 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

543In Stock

$18.51

$16.49

$15.73

$15.19

View

Min.: 1
Mult.: 1

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

CPC1906Y
IXYS Integrated Circuits
1: $10.03
548In Stock

Mfr. Part #
CPC1906Y

Mouser Part #
849-CPC1906Y

IXYS Integrated Circuits

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

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Datasheet

548In Stock

$10.03

$8.94

$8.53

$8.23

View

Min.: 1
Mult.: 1

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

CPC1907B
IXYS Integrated Circuits
1: $8.66
3,158In Stock
5,325On 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

3,158In Stock

5,325On Order

$8.66

$6.34

$6.08

$5.95

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay

CPC1909J
IXYS Integrated Circuits
1: $17.36
1,131In Stock

Mfr. Part #
CPC1909J

Mouser Part #
849-CPC1909J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay

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Datasheet

1,131In Stock

$17.36

$15.47

$14.77

$14.26

View

Min.: 1
Mult.: 1

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

CPC1916Y
IXYS Integrated Circuits
1: $9.36
986In Stock
475Expected 2026-07-16

Mfr. Part #
CPC1916Y

Mouser Part #
849-CPC1916Y

IXYS Integrated Circuits

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

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Datasheet

986In Stock

475Expected 2026-07-16

$9.36

$8.91

$8.90

$8.71

View

Min.: 1
Mult.: 1

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

CPC1926Y
IXYS Integrated Circuits
1: $9.18
1,287In Stock

Mfr. Part #
CPC1926Y

Mouser Part #
849-CPC1926Y

IXYS Integrated Circuits

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

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Datasheet

1,287In Stock

$9.18

$8.59

$7.63

$7.24

View

Min.: 1
Mult.: 1

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

CPC1927J
IXYS Integrated Circuits
1: $25.68
298In Stock

Mfr. Part #
CPC1927J

Mouser Part #
849-CPC1927J

IXYS Integrated Circuits

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

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Datasheet

298In Stock

$25.68

$22.88

$21.08

$20.35

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: $7.61
2,522In Stock

Mfr. Part #
CPC1966B

Mouser Part #
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

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Datasheet

2,522In Stock

$7.61

$6.79

$6.20

$6.03

View

Min.: 1
Mult.: 1

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

CPC1966YX6
IXYS Integrated Circuits
1: $10.83
3,148In 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

3,148In Stock

$10.83

$9.66

$9.21

$8.90

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: $35.63
475In Stock

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

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Datasheet

475In Stock

$35.63

$31.74

$29.92

$28.94

View

Min.: 1
Mult.: 1

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

CPC1976Y
IXYS Integrated Circuits
1: $5.08
5,791In Stock

Mfr. Part #
CPC1976Y

Mouser Part #
849-CPC1976Y

IXYS Integrated Circuits

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

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Datasheet

5,791In Stock

$5.08

$4.01

$3.78

$3.72

Quote

Min.: 1
Mult.: 1

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

CPC1976YX6
IXYS Integrated Circuits
1: $9.98
555In Stock

Mfr. Part #
CPC1976YX6

Mouser Part #
849-CPC1976YX6

IXYS Integrated Circuits

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

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Datasheet

555In Stock

$9.98

$7.05

$5.01

$4.81

$4.63

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: $18.29
422In Stock
824Expected 2026-04-30

Mfr. Part #
CPC1977J

Mouser Part #
849-CPC1977J

IXYS Integrated Circuits

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

Learn More

Datasheet

422In Stock

824Expected 2026-04-30

$18.29

$16.29

$15.55

$15.02

View

Min.: 1
Mult.: 1

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

CPC1978J
IXYS Integrated Circuits
1: $20.38
378In Stock

Mfr. Part #
CPC1978J

Mouser Part #
849-CPC1978J

IXYS Integrated Circuits

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

Learn More

Datasheet

378In Stock

$20.38

$18.17

$17.33

$16.74

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation

CPC1983Y
IXYS Integrated Circuits
1: $8.20
1,504In Stock

Mfr. Part #
CPC1983Y

Mouser Part #
849-CPC1983Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation

Learn More

Datasheet

1,504In Stock

$8.20

$6.74

$6.51

$6.22

View

Min.: 1
Mult.: 1

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

CPC2907B
IXYS Integrated Circuits
1: $16.12
339In Stock

Mfr. Part #
CPC2907B

Mouser Part #
849-CPC2907B

IXYS Integrated Circuits

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

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Datasheet

339In Stock

$16.12

$14.37

$13.70

$13.24

View

Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: $4.08
1,706In Stock

Mfr. Part #
LAA108STR

Mouser Part #
849-LAA108STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,706In Stock

Cut Tape

$4.08

$3.35

$3.24

$3.10

Reel

$2.85

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Solid State Relays - PCB Mount 120MA DPST 8-DIP

LAA110
IXYS Integrated Circuits
1: $7.35
3,243In Stock

Mfr. Part #
LAA110

Mouser Part #
849-LAA110

IXYS Integrated Circuits

Solid State Relays - PCB Mount 120MA DPST 8-DIP

Learn More

Datasheet

3,243In Stock

$7.35

$6.56

$6.23

$5.55

View

Min.: 1
Mult.: 1

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

LAA110LSTR
IXYS Integrated Circuits
1: $7.19
931In Stock

Mfr. Part #
LAA110LSTR

Mouser Part #
849-LAA110LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

931In Stock

Cut Tape

$7.19

$6.42

$6.12

$5.92

Reel

$4.90

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LAA110S
IXYS Integrated Circuits
1: $7.35
1,888In Stock

Mfr. Part #
LAA110S

Mouser Part #
849-LAA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

1,888In Stock

$7.35

$6.56

$6.25

$6.05

View

Min.: 1
Mult.: 1

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

LAA110STR
IXYS Integrated Circuits
1: $7.04
1,312In Stock
3,000Expected 2026-05-18

Mfr. Part #
LAA110STR

Mouser Part #
849-LAA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,312In Stock

3,000Expected 2026-05-18

Cut Tape

$7.04

$6.28

$5.98

$5.78

Reel

$4.96

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

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

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