Optocouplers/Photocouplers

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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: 5,13 €
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

5,13 €

4,58 €

4,38 €

4,22 €

Reel

3,58 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

LAA710STR
IXYS Integrated Circuits
1: 8,21 €
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

8,21 €

7,32 €

6,75 €

6,52 €

View

Reel

5,62 €

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

LCA110L
IXYS Integrated Circuits
1: 1,46 €
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

1,46 €

1,25 €

1,16 €

1,07 €

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA110S
IXYS Integrated Circuits
1: 1,58 €
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

1,58 €

1,38 €

1,33 €

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA120STR
IXYS Integrated Circuits
1: 2,68 €
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

2,68 €

2,21 €

2,12 €

2,03 €

Reel

1,61 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA127
IXYS Integrated Circuits
1: 3,29 €
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

3,29 €

3,08 €

2,76 €

2,67 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA127STR
IXYS Integrated Circuits
1: 3,08 €
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

3,08 €

2,74 €

2,62 €

2,53 €

Reel

2,17 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA182STR
IXYS Integrated Circuits
1: 2,21 €
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

2,21 €

1,98 €

1,88 €

1,82 €

Reel

1,48 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA701
IXYS Integrated Circuits
1: 4,98 €
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

4,98 €

4,44 €

4,24 €

4,09 €

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

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

LCA701STR
IXYS Integrated Circuits
1: 4,38 €
1 389In Stock
3 000Expected 29/07/2026

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 29/07/2026

Cut Tape

4,38 €

3,60 €

3,47 €

3,31 €

Reel

3,29 €

View

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

MOSFET

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

LCA710
IXYS Integrated Circuits
1: 4,23 €
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

4,23 €

3,59 €

3,48 €

3,04 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA710S
IXYS Integrated Circuits
1: 4,30 €
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

4,30 €

3,84 €

3,66 €

3,13 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA715S
IXYS Integrated Circuits
1: 5,03 €
2 146In Stock
275Expected 12/02/2026

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 12/02/2026

5,03 €

4,48 €

4,28 €

4,13 €

4,02 €

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA717STR
IXYS Integrated Circuits
1: 4,24 €
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

4,24 €

3,78 €

3,61 €

3,48 €

View

Reel

2,72 €

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

PAA110STR
IXYS Integrated Circuits
1: 5,50 €
609In Stock
1 000Expected 18/08/2026

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 18/08/2026

Cut Tape

5,50 €

5,11 €

4,91 €

4,79 €

Reel

4,09 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PAA132STR
IXYS Integrated Circuits
1: 7,37 €
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

7,37 €

6,91 €

6,15 €

5,84 €

Reel

4,19 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PAA140
IXYS Integrated Circuits
1: 6,63 €
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

6,63 €

5,91 €

5,65 €

5,44 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

PAA140S
IXYS Integrated Circuits
1: 5,98 €
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

5,98 €

5,42 €

5,39 €

5,38 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

PAA140STR
IXYS Integrated Circuits
1: 6,36 €
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

6,36 €

5,67 €

5,41 €

5,23 €

View

Reel

4,17 €

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PAA150STR
IXYS Integrated Circuits
1: 5,89 €
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

5,89 €

5,25 €

5,02 €

4,85 €

Reel

4,16 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PLA110
IXYS Integrated Circuits
1: 3,32 €
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

3,32 €

2,73 €

2,63 €

2,49 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

PLA140LSTR
IXYS Integrated Circuits
1: 4,03 €
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

4,03 €

3,60 €

3,44 €

3,32 €

Reel

2,92 €

View

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

MOSFET

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

PLA140STR
IXYS Integrated Circuits
1: 3,95 €
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

3,95 €

3,52 €

3,36 €

3,24 €

Reel

2,79 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

PLA150STR
IXYS Integrated Circuits
1: 3,89 €
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

3,89 €

3,64 €

3,23 €

3,07 €

View

Reel

2,63 €

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

PLA160STR
IXYS Integrated Circuits
1: 3,67 €
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

3,67 €

3,02 €

2,92 €

2,79 €

Reel

2,59 €

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1 000

PCB Mount

MOSFET

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

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