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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Types of Optocouplers/Photocouplers

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Part #

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

LCA120
IXYS Integrated Circuits
1: 5,65 €
607In Stock
4 750On Order

Mfr. Part No.
LCA120

Mouser Part No
849-LCA120

IXYS Integrated Circuits

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

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Datasheet

607In Stock

4 750On Order

5,65 €

5,30 €

4,71 €

4,47 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA120STR
IXYS Integrated Circuits
1: 5,49 €
3 027In 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 027In Stock

Cut Tape

5,49 €

5,14 €

4,57 €

4,34 €

View

Reel

3,64 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA127
IXYS Integrated Circuits
1: 6,57 €
2 787In 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

2 787In Stock

6,57 €

6,16 €

5,76 €

4,88 €

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: 6,35 €
1 439In Stock

Mfr. Part No.
LCA127STR

Mouser Part No
849-LCA127STR

IXYS Integrated Circuits

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

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Datasheet

1 439In Stock

Cut Tape

6,35 €

5,95 €

5,29 €

5,02 €

View

Reel

4,16 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA182S
IXYS Integrated Circuits
1: 4,64 €
836In Stock

Mfr. Part No.
LCA182S

Mouser Part No
849-LCA182S

IXYS Integrated Circuits

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

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Datasheet

836In Stock

4,64 €

4,35 €

3,86 €

3,67 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA182STR
IXYS Integrated Circuits
1: 4,47 €
1 735In Stock
2 000Expected 14/09/2026

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

1 735In Stock

2 000Expected 14/09/2026

Cut Tape

4,47 €

4,19 €

3,72 €

3,53 €

View

Reel

2,99 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA701
IXYS Integrated Circuits
1: 9,95 €
560In Stock

Mfr. Part No.
LCA701

Mouser Part No
849-LCA701

IXYS Integrated Circuits

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

Learn More

Datasheet

560In Stock

9,95 €

8,84 €

8,40 €

7,96 €

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

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

LCA701S
IXYS Integrated Circuits
1: 9,71 €
730In Stock
7 000On Order

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

730In Stock

7 000On Order

9,71 €

9,10 €

8,09 €

7,76 €

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A

LCA710R
IXYS Integrated Circuits
1: 9,06 €
355In Stock
500Expected 25/05/2026

Mfr. Part No.
LCA710R

Mouser Part No
849-LCA710R

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A

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Datasheet

355In Stock

500Expected 25/05/2026

9,06 €

8,50 €

7,55 €

7,17 €

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET

LCA712S
IXYS Integrated Circuits
1: 9,85 €
210In Stock

Mfr. Part No.
LCA712S

Mouser Part No
849-LCA712S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET

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Datasheet

210In Stock

9,85 €

8,75 €

8,32 €

7,88 €

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

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

LCA715
IXYS Integrated Circuits
1: 10,05 €
285In Stock

Mfr. Part No.
LCA715

Mouser Part No
849-LCA715

IXYS Integrated Circuits

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

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Datasheet

285In Stock

10,05 €

8,94 €

8,49 €

8,04 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

PAA110STR
IXYS Integrated Circuits
1: 11,76 €
1 609In Stock

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

1 609In Stock

Cut Tape

11,76 €

10,46 €

9,93 €

9,41 €

View

Reel

8,15 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PAA132
IXYS Integrated Circuits
1: 14,50 €
199In Stock

Mfr. Part No.
PAA132

Mouser Part No
849-PAA132

IXYS Integrated Circuits

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

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Datasheet

199In Stock

14,50 €

12,89 €

12,25 €

11,60 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

PAA132S
IXYS Integrated Circuits
1: 14,51 €
1 311In Stock

Mfr. Part No.
PAA132S

Mouser Part No
849-PAA132S

IXYS Integrated Circuits

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

Learn More

Datasheet

1 311In Stock

14,51 €

12,90 €

12,86 €

10,92 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

PAA132STR
IXYS Integrated Circuits
1: 13,81 €
1 216In 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 216In Stock

Cut Tape

13,81 €

12,28 €

11,66 €

11,05 €

View

Reel

9,46 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

PLA110
IXYS Integrated Circuits
1: 6,88 €
2 708In 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

2 708In Stock

6,88 €

6,45 €

5,73 €

5,44 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

PLA110STR
IXYS Integrated Circuits
1: 6,66 €
971In Stock
2 000On Order

Mfr. Part No.
PLA110STR

Mouser Part No
849-PLA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

971In Stock

2 000On Order

Cut Tape

6,66 €

6,24 €

5,55 €

5,26 €

View

Reel

4,65 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

PLA140LSTR
IXYS Integrated Circuits
1: 8,49 €
2 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

2 000In Stock

Cut Tape

8,49 €

7,96 €

7,07 €

6,72 €

View

Reel

5,43 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

MOSFET

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

PLA150STR
IXYS Integrated Circuits
1: 7,77 €
1 888In 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

1 888In Stock

Cut Tape

7,77 €

7,28 €

6,48 €

6,15 €

View

Reel

5,04 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

PLA160STR
IXYS Integrated Circuits
1: 7,67 €
2 049In 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 049In Stock

Cut Tape

7,67 €

7,19 €

6,39 €

6,07 €

View

Reel

4,97 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

MOSFET

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

PLA170
IXYS Integrated Circuits
1: 6,13 €
820In 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

820In Stock

6,13 €

5,74 €

5,11 €

4,85 €

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

PLA170S
IXYS Integrated Circuits
1: 6,13 €
611In Stock
550Expected 14/10/2026

Mfr. Part No.
PLA170S

Mouser Part No
849-PLA170S

IXYS Integrated Circuits

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

Learn More

Datasheet

611In Stock

550Expected 14/10/2026

6,13 €

5,74 €

5,11 €

4,85 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

PLA171P
IXYS Integrated Circuits
1: 6,83 €
1 555In Stock

Mfr. Part No.
PLA171P

Mouser Part No
849-PLA171P

IXYS Integrated Circuits

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

Learn More

Datasheet

1 555In Stock

6,83 €

6,40 €

5,68 €

5,40 €

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

PLA171PTR
IXYS Integrated Circuits
1: 6,50 €
966In Stock

Mfr. Part No.
PLA171PTR

Mouser Part No
849-PLA171PTR

IXYS Integrated Circuits

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

Learn More

Datasheet

966In Stock

Cut Tape

6,50 €

6,10 €

5,42 €

5,14 €

View

Reel

4,27 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

PLA172PTR
IXYS Integrated Circuits
1: 9,09 €
579In Stock

Mfr. Part No.
PLA172PTR

Mouser Part No
849-PLA172PTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

Learn More

Datasheet

579In Stock

Cut Tape

9,09 €

8,52 €

7,58 €

7,20 €

View

Reel

5,82 €

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

Types of Optocouplers/Photocouplers

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