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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 #

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

CPC1976YX6
IXYS Integrated Circuits
1: $10.60
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

$10.60

$8.46

$7.35

$6.87

View

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: $23.29
808In Stock
425Expected 10/16/2026

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 10/16/2026

$23.29

$20.87

$19.81

$19.13

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

CPC1981Y
IXYS Integrated Circuits
1: $7.25
2,833In Stock

Mfr. Part #
CPC1981Y

Mouser Part #
849-CPC1981Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

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Datasheet

2,833In Stock

$7.25

$7.05

$6.72

$6.49

View

Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: $5.09
1,248In Stock
2,000Expected 5/3/2027

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

1,248In Stock

2,000Expected 5/3/2027

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 120MA DPST 8-DIP

LAA110
IXYS Integrated Circuits
1: $9.19
1,063In 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

1,063In Stock

4,700On Order

$9.19

$8.19

$7.82

$7.55

View

Min.: 1
Mult.: 1

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

LAA110LSTR
IXYS Integrated Circuits
1: $8.98
698In Stock

Mfr. Part #
LAA110LSTR

Mouser Part #
849-LAA110LSTR

IXYS Integrated Circuits

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

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Datasheet

698In Stock

Cut Tape

$8.98

$8.01

$7.65

$7.38

Reel

$6.29

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 3/29/2027

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 3/29/2027

$9.19

$8.19

$7.82

$7.54

View

Min.: 1
Mult.: 1

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

LAA710
IXYS Integrated Circuits
1: $19.34
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

$19.34

$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
12In Stock
3,000On Order

Mfr. Part #
LAA710STR

Mouser Part #
849-LAA710STR

IXYS Integrated Circuits

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

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Datasheet

12In 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
3,980In 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

3,980In 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

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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
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

$6.21

$5.53

$5.49

$5.21

View

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: $6.03
2,046In Stock

Mfr. Part #
LCA120STR

Mouser Part #
849-LCA120STR

IXYS Integrated Circuits

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

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Datasheet

2,046In Stock

Cut Tape

$6.03

$5.38

$5.14

$4.96

Reel

$4.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA127
IXYS Integrated Circuits
1: $7.14
2,043In Stock

Mfr. Part #
LCA127

Mouser Part #
849-LCA127

IXYS Integrated Circuits

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

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Datasheet

2,043In Stock

$7.14

$6.36

$6.08

$5.86

View

Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: $6.92
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

$6.92

$6.17

$5.89

$5.69

Reel

$4.86

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA182S
IXYS Integrated Circuits
1: $5.16
817In Stock

Mfr. Part #
LCA182S

Mouser Part #
849-LCA182S

IXYS Integrated Circuits

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

Learn More

Datasheet

817In Stock

$5.16

$3.85

$3.72

$3.61

View

Min.: 1
Mult.: 1

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

LCA182STR
IXYS Integrated Circuits
1: $4.98
5,385In Stock

Mfr. Part #
LCA182STR

Mouser Part #
849-LCA182STR

IXYS Integrated Circuits

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

Learn More

Datasheet

5,385In Stock

Cut Tape

$4.98

$4.44

$4.24

$4.10

Reel

$3.48

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA701
IXYS Integrated Circuits
1: $11.21
547In Stock

Mfr. Part #
LCA701

Mouser Part #
849-LCA701

IXYS Integrated Circuits

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

Learn More

Datasheet

547In Stock

$11.21

$9.99

$9.54

$9.20

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

LCA715
IXYS Integrated Circuits
1: $11.58
518In Stock

Mfr. Part #
LCA715

Mouser Part #
849-LCA715

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

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Datasheet

518In Stock

$11.58

$10.32

$9.85

$9.43

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay

LCA717STR
IXYS Integrated Circuits
1: $9.54
1,207In Stock

Mfr. Part #
LCA717STR

Mouser Part #
849-LCA717STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay

Learn More

Datasheet

1,207In Stock

Cut Tape

$9.54

$8.50

$8.12

$7.84

View

Reel

$6.57

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PAA132
IXYS Integrated Circuits
1: $16.87
269In Stock

Mfr. Part #
PAA132

Mouser Part #
849-PAA132

IXYS Integrated Circuits

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

Learn More

Datasheet

269In Stock

$16.87

$15.00

$14.25

$13.49

View

Min.: 1
Mult.: 1

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

PAA132S
IXYS Integrated Circuits
1: $15.96
1,256In Stock

Mfr. Part #
PAA132S

Mouser Part #
849-PAA132S

IXYS Integrated Circuits

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

Learn More

Datasheet

1,256In Stock

$15.96

$14.22

$13.58

$13.10

View

Min.: 1
Mult.: 1

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

PAA150S
IXYS Integrated Circuits
1: $14.55
267In Stock

Mfr. Part #
PAA150S

Mouser Part #
849-PAA150S

IXYS Integrated Circuits

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

Learn More

Datasheet

267In Stock

$14.55

$12.93

$12.29

$11.64

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA

PLA110STR
IXYS Integrated Circuits
1: $7.75
336In Stock
3,000Expected 5/26/2027

Mfr. Part #
PLA110STR

Mouser Part #
849-PLA110STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA

Learn More

Datasheet

336In Stock

3,000Expected 5/26/2027

Cut Tape

$7.75

$7.26

$6.46

$6.13

Reel

$4.92

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

PLA140LSTR
IXYS Integrated Circuits
1: $9.08
1,999In Stock

Mfr. Part #
PLA140LSTR

Mouser Part #
849-PLA140LSTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

Learn More

Datasheet

1,999In Stock

Cut Tape

$9.08

$8.10

$7.73

$7.47

View

Reel

$6.55

MouseReel Available

Min.: 1
Mult.: 1

: 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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