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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 100V Single Pole SIP Power Relay

CPC1916Y
IXYS Integrated Circuits
1: $17.68
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

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Datasheet

292In Stock

1,400On Order

$17.68

$17.02

$16.24

$15.68

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Min.: 1
Mult.: 1

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

CPC1927J
IXYS Integrated Circuits
1: $45.79
238In 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

238In Stock

$45.79

$41.13

$39.25

$37.90

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Min.: 1
Mult.: 1

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

CPC1963G
IXYS Integrated Circuits
1: $18.16
202In Stock

Mfr. Part #
CPC1963G

Mouser Part #
849-CPC1963G

IXYS Integrated Circuits

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

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Datasheet

202In Stock

$18.16

$16.14

$15.34

$14.66

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: $14.14
1,481In Stock
1,075Expected 2026-12-18

Mfr. Part #
CPC1966B

Mouser Part #
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

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Datasheet

1,481In Stock

1,075Expected 2026-12-18

$14.14

$12.60

$12.02

$11.61

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Min.: 1
Mult.: 1

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

CPC1968J
IXYS Integrated Circuits
1: $64.05
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

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Datasheet

301In Stock

1,050On Order

$64.05

$57.05

$54.46

$53.54

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Min.: 1
Mult.: 1

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

CPC1972GSTR
IXYS Integrated Circuits
1: $4.03
3,684In Stock

Mfr. Part #
CPC1972GSTR

Mouser Part #
849-CPC1972GSTR

IXYS Integrated Circuits

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

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Datasheet

3,684In Stock

Cut Tape

$4.03

$3.31

$3.04

$2.68

Reel

$2.53

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MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1976Y
IXYS Integrated Circuits
1: $9.98
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

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Datasheet

2,082In Stock

5,975On Order

$9.98

$7.11

$6.49

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Min.: 1
Mult.: 1

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

CPC1976YX6
IXYS Integrated Circuits
1: $14.40
356In 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

356In Stock

$14.40

$11.84

$10.11

$9.22

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Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: $33.54
808In Stock
425Expected 2026-10-02

Mfr. Part #
CPC1977J

Mouser Part #
849-CPC1977J

IXYS Integrated Circuits

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

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Datasheet

808In Stock

425Expected 2026-10-02

$33.54

$30.05

$28.53

$27.55

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Min.: 1
Mult.: 1

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

CPC1978J
IXYS Integrated Circuits
1: $36.69
86In Stock
550On Order

Mfr. Part #
CPC1978J

Mouser Part #
849-CPC1978J

IXYS Integrated Circuits

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

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Datasheet

86In Stock

550On Order

$36.69

$33.19

$31.56

$30.11

Min.: 1
Mult.: 1

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

CPC2907B
IXYS Integrated Circuits
1: $28.99
211In 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

211In Stock

$28.99

$25.82

$24.65

$23.80

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Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: $7.33
2,553In Stock
2,000Expected 2027-02-12

Mfr. Part #
LAA108STR

Mouser Part #
849-LAA108STR

IXYS Integrated Circuits

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

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Datasheet

2,553In Stock

2,000Expected 2027-02-12

Cut Tape

$7.33

$6.54

$6.24

$6.02

Reel

$5.13

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MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA110
IXYS Integrated Circuits
1: $11.85
2,225In Stock
4,700On Order

Mfr. Part #
LAA110

Mouser Part #
849-LAA110

IXYS Integrated Circuits

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

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Datasheet

2,225In Stock

4,700On Order

$11.85

$10.83

$10.05

$9.27

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Min.: 1
Mult.: 1

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

LAA110S
IXYS Integrated Circuits
1: $13.23
2,373In Stock
100Expected 2027-01-13

Mfr. Part #
LAA110S

Mouser Part #
849-LAA110S

IXYS Integrated Circuits

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

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Datasheet

2,373In Stock

100Expected 2027-01-13

$13.23

$11.79

$11.26

$10.86

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST 1 Form A

LAA127
IXYS Integrated Circuits
1: $17.42
611In Stock

Mfr. Part #
LAA127

Mouser Part #
849-LAA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST 1 Form A

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Datasheet

611In Stock

$17.42

$15.54

$14.83

$14.31

View

Min.: 1
Mult.: 1

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

LAA710
IXYS Integrated Circuits
1: $29.82
748In Stock

Mfr. Part #
LAA710

Mouser Part #
849-LAA710

IXYS Integrated Circuits

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

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Datasheet

748In Stock

$29.82

$26.51

$25.19

$23.85

View

Min.: 1
Mult.: 1

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

LAA710STR
IXYS Integrated Circuits
1: $26.61
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

$26.61

$23.70

$22.64

$21.86

View

Reel

$18.78

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA110
IXYS Integrated Circuits
1: $5.64
4,591In Stock
17,250On Order

Mfr. Part #
LCA110

Mouser Part #
849-LCA110

IXYS Integrated Circuits

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

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Datasheet

4,591In Stock

17,250On Order

$5.64

$5.03

$4.68

$4.36

View

Min.: 1
Mult.: 1

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

LCA110L
IXYS Integrated Circuits
1: $6.02
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

$6.02

$5.50

$5.30

$5.10

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: $8.94
2,471In Stock

Mfr. Part #
LCA120

Mouser Part #
849-LCA120

IXYS Integrated Circuits

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

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Datasheet

2,471In Stock

$8.94

$7.96

$7.62

$7.50

View

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: $8.68
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

$8.68

$7.75

$7.40

$7.14

Reel

$6.11

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA

LCA127
IXYS Integrated Circuits
1: $10.28
2,303In Stock

Mfr. Part #
LCA127

Mouser Part #
849-LCA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA

Learn More

Datasheet

2,303In Stock

$10.28

$9.16

$8.76

$8.44

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA

LCA127STR
IXYS Integrated Circuits
1: $9.96
1,429In Stock

Mfr. Part #
LCA127STR

Mouser Part #
849-LCA127STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA

Learn More

Datasheet

1,429In Stock

Cut Tape

$9.96

$8.88

$8.48

$8.19

Reel

$6.97

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA182STR
IXYS Integrated Circuits
1: $7.17
3,435In Stock

Mfr. Part #
LCA182STR

Mouser Part #
849-LCA182STR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,435In Stock

Cut Tape

$7.17

$6.39

$6.11

$5.90

Reel

$5.01

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount 1-Form-A SSR

LCA701
IXYS Integrated Circuits
1: $16.14
558In Stock

Mfr. Part #
LCA701

Mouser Part #
849-LCA701

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A SSR

Learn More

Datasheet

558In Stock

$16.14

$14.39

$13.74

$13.25

View

Min.: 1
Mult.: 1

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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