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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: Rp109.526
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

Rp109.526

Rp97.784

Rp93.381

Rp90.079

Reel

Rp76.319

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: Rp175.204
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

Rp175.204

Rp156.124

Rp144.016

Rp139.063

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Reel

Rp119.983

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

LCA110L
IXYS Integrated Circuits
1: Rp31.188
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

Rp31.188

Rp26.602

Rp24.767

Rp22.749

Rp22.015

Min.: 1
Mult.: 1

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

LCA110S
IXYS Integrated Circuits
1: Rp33.757
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

Rp33.757

Rp29.354

Rp27.702

Rp26.602

Rp22.015

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: Rp57.240
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

Rp57.240

Rp47.149

Rp45.315

Rp43.297

Reel

Rp34.307

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: Rp70.082
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

Rp70.082

Rp65.679

Rp58.891

Rp56.873

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Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: Rp65.679
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

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Datasheet

1.039In Stock

Cut Tape

Rp65.679

Rp58.524

Rp55.955

Rp53.937

Reel

Rp46.232

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: Rp47.149
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

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Datasheet

4.172In Stock

Cut Tape

Rp47.149

Rp42.196

Rp40.178

Rp38.894

Reel

Rp31.555

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

LCA701
IXYS Integrated Circuits
1: Rp106.223
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

Rp106.223

Rp94.665

Rp90.446

Rp87.144

View

Min.: 1
Mult.: 1

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

LCA701STR
IXYS Integrated Circuits
1: Rp93.381
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

Rp93.381

Rp76.870

Rp74.118

Rp70.632

Reel

Rp65.862

View

Min.: 1
Mult.: 1

Reel: 1.000

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

LCA710
IXYS Integrated Circuits
1: Rp90.262
3.246In Stock

Mfr. Part No.
LCA710

Mouser Part No
849-LCA710

IXYS Integrated Circuits

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

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Datasheet

3.246In Stock

Rp90.262

Rp76.686

Rp74.301

Rp64.945

View

Min.: 1
Mult.: 1

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

LCA710S
IXYS Integrated Circuits
1: Rp91.730
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

Rp91.730

Rp81.823

Rp78.154

Rp66.779

View

Min.: 1
Mult.: 1

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

LCA715S
IXYS Integrated Circuits
1: Rp107.324
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

Rp107.324

Rp95.583

Rp91.363

Rp88.061

View

Min.: 1
Mult.: 1

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

LCA717STR
IXYS Integrated Circuits
1: Rp90.446
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

Rp90.446

Rp80.722

Rp77.053

Rp74.301

View

Reel

Rp57.973

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: Rp117.231
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

Rp117.231

Rp108.975

Rp104.756

Rp102.187

Reel

Rp87.327

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: Rp157.225
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

Rp157.225

Rp147.502

Rp131.174

Rp124.569

Reel

Rp89.345

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: Rp141.448
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

Rp141.448

Rp126.037

Rp120.533

Rp116.130

View

Min.: 1
Mult.: 1

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

PAA140S
IXYS Integrated Circuits
1: Rp127.505
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

Rp127.505

Rp115.580

Rp115.029

Rp114.846

View

Min.: 1
Mult.: 1

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

PAA140STR
IXYS Integrated Circuits
1: Rp135.577
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

Rp135.577

Rp120.900

Rp115.396

Rp111.544

View

Reel

Rp88.978

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: Rp125.670
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

Rp125.670

Rp112.094

Rp107.141

Rp103.471

Reel

Rp88.795

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

PLA110
IXYS Integrated Circuits
1: Rp70.816
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

Rp70.816

Rp58.157

Rp56.139

Rp53.203

View

Min.: 1
Mult.: 1

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

PLA140LSTR
IXYS Integrated Circuits
1: Rp86.043
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

Rp86.043

Rp76.870

Rp73.384

Rp70.816

Reel

Rp62.193

View

Min.: 1
Mult.: 1

Reel: 1.000

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

PLA140STR
IXYS Integrated Circuits
1: Rp84.208
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

Rp84.208

Rp75.035

Rp71.733

Rp69.164

Reel

Rp59.441

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: Rp82.924
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

Rp82.924

Rp77.604

Rp68.981

Rp65.495

View

Reel

Rp56.139

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

PLA160STR
IXYS Integrated Circuits
1: Rp78.337
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

Rp78.337

Rp64.394

Rp62.193

Rp59.441

Reel

Rp55.221

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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