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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 Single-Pole Relay 350V 120mA

LCA110L
IXYS Integrated Circuits
1: $2.33
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

$2.33

$2.17

$1.97

$1.91

View

Min.: 1
Mult.: 1

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

LCA110S
IXYS Integrated Circuits
1: $1.84
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

$1.84

$1.69

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: $3.12
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

$3.12

$2.57

$2.47

$2.36

Reel

$1.87

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: $3.83
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

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Datasheet

3,073In Stock

$3.83

$3.58

$3.21

$3.11

View

Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: $3.58
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

$3.58

$3.19

$3.05

$2.94

Reel

$2.52

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: $2.57
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

$2.57

$2.30

$2.19

$2.12

Reel

$1.72

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA701
IXYS Integrated Circuits
1: $5.79
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

$5.79

$5.16

$4.93

$4.76

View

Min.: 1
Mult.: 1

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

LCA701S
IXYS Integrated Circuits
1: $5.33
2,941In Stock

Mfr. Part No.
LCA701S

Mouser Part No
849-LCA701S

IXYS Integrated Circuits

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

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Datasheet

2,941In Stock

$5.33

$4.88

Min.: 1
Mult.: 1

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

LCA701STR
IXYS Integrated Circuits
1: $5.09
1,289In Stock
3,000Expected 2026/07/29

Mfr. Part No.
LCA701STR

Mouser Part No
849-LCA701STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,289In Stock

3,000Expected 2026/07/29

Cut Tape

$5.09

$4.19

$4.18

Reel

$4.18

$3.98

Quote

Min.: 1
Mult.: 1

Reel: 1,000

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

LCA710
IXYS Integrated Circuits
1: $4.92
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

$4.92

$4.18

$4.05

$3.54

View

Min.: 1
Mult.: 1

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

LCA710S
IXYS Integrated Circuits
1: $5.00
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

$5.00

$4.47

$4.26

$3.64

View

Min.: 1
Mult.: 1

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

LCA715S
IXYS Integrated Circuits
1: $5.85
1,911In Stock

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

1,911In Stock

$5.85

$5.21

$5.11

Min.: 1
Mult.: 1

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

LCA717STR
IXYS Integrated Circuits
1: $5.20
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

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Datasheet

924In Stock

Cut Tape

$5.20

$4.87

$4.33

$4.11

View

Reel

$3.48

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: $6.40
609In Stock
1,000Expected 2026/08/18

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 2026/08/18

Cut Tape

$6.40

$5.94

$5.71

$5.57

Reel

$4.76

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: $8.57
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

$8.57

$8.04

$7.15

$6.79

Reel

$4.87

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: $7.71
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

$7.71

$6.87

$6.57

$6.33

View

Min.: 1
Mult.: 1

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

PAA140S
IXYS Integrated Circuits
1: $6.95
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

$6.95

$6.30

$6.27

$6.26

View

Min.: 1
Mult.: 1

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

PAA140STR
IXYS Integrated Circuits
1: $7.40
1,913In 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

1,913In Stock

Cut Tape

$7.40

$6.59

$6.29

$6.08

View

Reel

$4.85

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: $6.85
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

$6.85

$6.11

$5.84

$5.64

Reel

$4.84

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PLA110
IXYS Integrated Circuits
1: $3.86
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

$3.86

$3.17

$3.06

$2.90

View

Min.: 1
Mult.: 1

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

PLA140LSTR
IXYS Integrated Circuits
1: $4.69
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

$4.69

$4.19

$4.00

$3.86

Reel

$3.40

View

Min.: 1
Mult.: 1

Reel: 1,000

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

PLA140STR
IXYS Integrated Circuits
1: $4.59
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

$4.59

$4.09

$3.91

$3.77

Reel

$3.24

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: $4.52
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

$4.52

$4.23

$3.76

$3.57

View

Reel

$3.06

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

PLA160STR
IXYS Integrated Circuits
1: $4.27
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

$4.27

$3.51

$3.40

$3.24

Reel

$3.01

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

PLA170
IXYS Integrated Circuits
1: $3.47
965In Stock

Mfr. Part No.
PLA170

Mouser Part No
849-PLA170

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

Learn More

Datasheet

965In Stock

$3.47

$2.85

$2.67

$2.61

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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