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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 250V 200mA Dual Single-Pole

LAA127STR
IXYS Integrated Circuits
1: $8.30
1,149In Stock

Mfr. Part No.
LAA127STR

Mouser Part No
849-LAA127STR

IXYS Integrated Circuits

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

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Datasheet

1,149In Stock

Cut Tape

$8.30

$7.41

$7.08

$6.82

Reel

$5.78

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LAA710STR
IXYS Integrated Circuits
1: $13.27
1,855In Stock

Mfr. Part No.
LAA710STR

Mouser Part No
849-LAA710STR

IXYS Integrated Circuits

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

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Datasheet

1,855In Stock

Cut Tape

$13.27

$11.83

$10.91

$10.54

View

Reel

$9.09

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA110L
IXYS Integrated Circuits
1: $2.36
1,834In Stock

Mfr. Part No.
LCA110L

Mouser Part No
849-LCA110L

IXYS Integrated Circuits

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

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Datasheet

1,834In Stock

$2.36

$2.02

$1.88

$1.72

$1.67

Min.: 1
Mult.: 1

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

LCA110S
IXYS Integrated Circuits
1: $2.56
5,519In Stock

Mfr. Part No.
LCA110S

Mouser Part No
849-LCA110S

IXYS Integrated Circuits

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

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Datasheet

5,519In Stock

$2.56

$2.22

$2.10

$2.02

$1.67

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: $4.34
3,352In Stock

Mfr. Part No.
LCA120STR

Mouser Part No
849-LCA120STR

IXYS Integrated Circuits

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

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Datasheet

3,352In Stock

Cut Tape

$4.34

$3.57

$3.43

$3.28

Reel

$2.60

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA127
IXYS Integrated Circuits
1: $5.31
3,073In Stock

Mfr. Part No.
LCA127

Mouser Part No
849-LCA127

IXYS Integrated Circuits

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

Learn More

Datasheet

3,073In Stock

$5.31

$4.98

$4.46

$4.31

View

Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: $4.98
1,039In Stock

Mfr. Part No.
LCA127STR

Mouser Part No
849-LCA127STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,039In Stock

Cut Tape

$4.98

$4.43

$4.24

$4.09

Reel

$3.50

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA182STR
IXYS Integrated Circuits
1: $3.57
4,172In Stock

Mfr. Part No.
LCA182STR

Mouser Part No
849-LCA182STR

IXYS Integrated Circuits

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

Learn More

Datasheet

4,172In Stock

Cut Tape

$3.57

$3.20

$3.04

$2.95

Reel

$2.39

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA701
IXYS Integrated Circuits
1: $8.05
775In Stock

Mfr. Part No.
LCA701

Mouser Part No
849-LCA701

IXYS Integrated Circuits

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

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Datasheet

775In Stock

$8.05

$7.17

$6.85

$6.60

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

LCA701STR
IXYS Integrated Circuits
1: $7.08
1,389In Stock
3,000Expected 29/7/2026

Mfr. Part No.
LCA701STR

Mouser Part No
849-LCA701STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay

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Datasheet

1,389In Stock

3,000Expected 29/7/2026

Cut Tape

$7.08

$5.82

$5.62

$5.35

Reel

$4.99

View

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA710
IXYS Integrated Circuits
1: $6.84
3,246In Stock

Mfr. Part No.
LCA710

Mouser Part No
849-LCA710

IXYS Integrated Circuits

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

Learn More

Datasheet

3,246In Stock

$6.84

$5.81

$5.63

$4.92

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST-NO 6 Pin SMD

LCA710S
IXYS Integrated Circuits
1: $6.95
3,080In Stock

Mfr. Part No.
LCA710S

Mouser Part No
849-LCA710S

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 6 Pin SMD

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Datasheet

3,080In Stock

$6.95

$6.20

$5.92

$5.06

View

Min.: 1
Mult.: 1

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

LCA715S
IXYS Integrated Circuits
1: $8.13
2,146In Stock
275Expected 12/2/2026

Mfr. Part No.
LCA715S

Mouser Part No
849-LCA715S

IXYS Integrated Circuits

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

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Datasheet

2,146In Stock

275Expected 12/2/2026

$8.13

$7.24

$6.92

$6.67

View

Min.: 1
Mult.: 1

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

LCA717STR
IXYS Integrated Circuits
1: $6.85
924In Stock

Mfr. Part No.
LCA717STR

Mouser Part No
849-LCA717STR

IXYS Integrated Circuits

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

Learn More

Datasheet

924In Stock

Cut Tape

$6.85

$6.12

$5.84

$5.63

View

Reel

$4.39

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR

PAA110STR
IXYS Integrated Circuits
1: $8.88
609In Stock
1,000Expected 18/8/2026

Mfr. Part No.
PAA110STR

Mouser Part No
849-PAA110STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR

Learn More

Datasheet

609In Stock

1,000Expected 18/8/2026

Cut Tape

$8.88

$8.26

$7.94

$7.74

Reel

$6.62

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PAA132STR
IXYS Integrated Circuits
1: $11.91
1,233In Stock

Mfr. Part No.
PAA132STR

Mouser Part No
849-PAA132STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,233In Stock

Cut Tape

$11.91

$11.18

$9.94

$9.44

Reel

$6.77

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PAA140
IXYS Integrated Circuits
1: $10.72
2,164In Stock

Mfr. Part No.
PAA140

Mouser Part No
849-PAA140

IXYS Integrated Circuits

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

Learn More

Datasheet

2,164In Stock

$10.72

$9.55

$9.13

$8.80

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

PAA140S
IXYS Integrated Circuits
1: $9.66
841In Stock

Mfr. Part No.
PAA140S

Mouser Part No
849-PAA140S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

Learn More

Datasheet

841In Stock

$9.66

$8.76

$8.72

$8.70

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

PAA140STR
IXYS Integrated Circuits
1: $10.27
1,758In Stock

Mfr. Part No.
PAA140STR

Mouser Part No
849-PAA140STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

Learn More

Datasheet

1,758In Stock

Cut Tape

$10.27

$9.16

$8.74

$8.45

View

Reel

$6.74

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PAA150STR
IXYS Integrated Circuits
1: $9.52
1,100In Stock

Mfr. Part No.
PAA150STR

Mouser Part No
849-PAA150STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,100In Stock

Cut Tape

$9.52

$8.49

$8.12

$7.84

Reel

$6.73

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PLA110
IXYS Integrated Circuits
1: $5.37
4,263In Stock

Mfr. Part No.
PLA110

Mouser Part No
849-PLA110

IXYS Integrated Circuits

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

Learn More

Datasheet

4,263In Stock

$5.37

$4.41

$4.25

$4.03

View

Min.: 1
Mult.: 1

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

PLA140LSTR
IXYS Integrated Circuits
1: $6.52
1,000In Stock

Mfr. Part No.
PLA140LSTR

Mouser Part No
849-PLA140LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,000In Stock

Cut Tape

$6.52

$5.82

$5.56

$5.37

Reel

$4.71

View

Min.: 1
Mult.: 1

Reel: 1,000

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

PLA140STR
IXYS Integrated Circuits
1: $6.38
1,223In Stock
3,000On Order

Mfr. Part No.
PLA140STR

Mouser Part No
849-PLA140STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,223In Stock

3,000On Order

Cut Tape

$6.38

$5.69

$5.43

$5.24

Reel

$4.50

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

PLA150STR
IXYS Integrated Circuits
1: $6.28
2,000In Stock

Mfr. Part No.
PLA150STR

Mouser Part No
849-PLA150STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

Learn More

Datasheet

2,000In Stock

Cut Tape

$6.28

$5.88

$5.23

$4.96

View

Reel

$4.25

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

PLA160STR
IXYS Integrated Circuits
1: $5.94
2,209In Stock

Mfr. Part No.
PLA160STR

Mouser Part No
849-PLA160STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

Learn More

Datasheet

2,209In Stock

Cut Tape

$5.94

$4.88

$4.71

$4.50

Reel

$4.18

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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