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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.

All Results (297)

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Part #

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

CPC1976YX6
IXYS Integrated Circuits
1: $11.148
356In Stock

Mfr. Part #
CPC1976YX6

Mouser Part #
849-CPC1976YX6

IXYS Integrated Circuits

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

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Datasheet

356In Stock

$11.148

$8.897

$7.730

$7.225

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST i4-PAC 600V

CPC1977J
IXYS Integrated Circuits
1: $24.494
808In Stock
425Expected 10/2/2026

Mfr. Part #
CPC1977J

Mouser Part #
849-CPC1977J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST i4-PAC 600V

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Datasheet

808In Stock

425Expected 10/2/2026

$24.494

$21.949

$20.834

$20.119

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

CPC1981Y
IXYS Integrated Circuits
1: $7.625
2.843In Stock

Mfr. Part #
CPC1981Y

Mouser Part #
849-CPC1981Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

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Datasheet

2.843In Stock

$7.625

$7.414

$7.067

$6.825

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 100V 300mA Double Pole Relay

LAA108STR
IXYS Integrated Circuits
1: $5.353
2.251In Stock
2.000Expected 2/12/2027

Mfr. Part #
LAA108STR

Mouser Part #
849-LAA108STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 100V 300mA Double Pole Relay

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Datasheet

2.251In Stock

2.000Expected 2/12/2027

Cut Tape

$5.353

$4.775

$4.554

$4.396

Reel

$3.744

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

Solid State Relays - PCB Mount 120MA DPST 8-DIP

LAA110
IXYS Integrated Circuits
1: $8.655
2.125In Stock
4.700On Order

Mfr. Part #
LAA110

Mouser Part #
849-LAA110

IXYS Integrated Circuits

Solid State Relays - PCB Mount 120MA DPST 8-DIP

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Datasheet

2.125In Stock

4.700On Order

$8.655

$7.909

$7.341

$6.773

View

Min.: 1
Mult.: 1

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

LAA110LSTR
IXYS Integrated Circuits
1: $8.371
698In Stock

Mfr. Part #
LAA110LSTR

Mouser Part #
849-LAA110LSTR

IXYS Integrated Circuits

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

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Datasheet

698In Stock

Cut Tape

$8.371

$7.877

$7.604

$7.435

Reel

$6.605

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LAA110S
IXYS Integrated Circuits
1: $9.665
2.373In Stock
100Expected 1/29/2027

Mfr. Part #
LAA110S

Mouser Part #
849-LAA110S

IXYS Integrated Circuits

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

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Datasheet

2.373In Stock

100Expected 1/29/2027

$9.665

$8.613

$8.224

$7.930

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Min.: 1
Mult.: 1

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

LAA710
IXYS Integrated Circuits
1: $20.340
748In Stock

Mfr. Part #
LAA710

Mouser Part #
849-LAA710

IXYS Integrated Circuits

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

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Datasheet

748In Stock

$20.340

$19.362

$18.394

$17.416

View

Min.: 1
Mult.: 1

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

LAA710STR
IXYS Integrated Circuits
1: $19.435
126In Stock
3.000On Order

Mfr. Part #
LAA710STR

Mouser Part #
849-LAA710STR

IXYS Integrated Circuits

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

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Datasheet

126In Stock

3.000On Order

Cut Tape

$19.435

$17.311

$16.533

$15.965

View

Reel

$13.714

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LCA110
IXYS Integrated Circuits
1: $4.123
3.980In Stock
17.250On Order

Mfr. Part #
LCA110

Mouser Part #
849-LCA110

IXYS Integrated Circuits

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

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Datasheet

3.980In Stock

17.250On Order

$4.123

$3.670

$3.418

$3.187

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Min.: 1
Mult.: 1

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

LCA110L
IXYS Integrated Circuits
1: $4.396
1.406In Stock

Mfr. Part #
LCA110L

Mouser Part #
849-LCA110L

IXYS Integrated Circuits

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

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Datasheet

1.406In Stock

$4.396

$4.017

$3.870

$3.723

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: $6.531
2.471In Stock

Mfr. Part #
LCA120

Mouser Part #
849-LCA120

IXYS Integrated Circuits

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

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Datasheet

2.471In Stock

$6.531

$5.816

$5.774

$5.479

View

Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: $6.342
2.046In Stock

Mfr. Part #
LCA120STR

Mouser Part #
849-LCA120STR

IXYS Integrated Circuits

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

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Datasheet

2.046In Stock

Cut Tape

$6.342

$5.658

$5.406

$5.216

Reel

$4.459

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MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LCA127
IXYS Integrated Circuits
1: $7.509
2.043In Stock

Mfr. Part #
LCA127

Mouser Part #
849-LCA127

IXYS Integrated Circuits

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

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Datasheet

2.043In Stock

$7.509

$6.689

$6.394

$6.163

View

Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: $7.278
1.429In Stock

Mfr. Part #
LCA127STR

Mouser Part #
849-LCA127STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.429In Stock

Cut Tape

$7.278

$6.489

$6.194

$5.984

Reel

$5.111

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LCA182STR
IXYS Integrated Circuits
1: $5.237
3.385In Stock

Mfr. Part #
LCA182STR

Mouser Part #
849-LCA182STR

IXYS Integrated Circuits

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

Learn More

Datasheet

3.385In Stock

Cut Tape

$5.237

$4.670

$4.459

$4.312

Reel

$3.660

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LCA701
IXYS Integrated Circuits
1: $11.789
547In Stock

Mfr. Part #
LCA701

Mouser Part #
849-LCA701

IXYS Integrated Circuits

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

Learn More

Datasheet

547In Stock

$11.789

$10.506

$10.033

$9.676

View

Min.: 1
Mult.: 1

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

LCA715
IXYS Integrated Circuits
1: $12.179
618In Stock

Mfr. Part #
LCA715

Mouser Part #
849-LCA715

IXYS Integrated Circuits

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

Learn More

Datasheet

618In Stock

$12.179

$10.853

$10.359

$9.917

View

Min.: 1
Mult.: 1

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

LCA717STR
IXYS Integrated Circuits
1: $10.033
1.207In Stock

Mfr. Part #
LCA717STR

Mouser Part #
849-LCA717STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.207In Stock

Cut Tape

$10.033

$8.939

$8.540

$8.245

View

Reel

$6.910

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

PAA132
IXYS Integrated Circuits
1: $17.742
269In Stock

Mfr. Part #
PAA132

Mouser Part #
849-PAA132

IXYS Integrated Circuits

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

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Datasheet

269In Stock

$17.742

$15.775

$14.987

$14.187

View

Min.: 1
Mult.: 1

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

PAA132S
IXYS Integrated Circuits
1: $16.785
1.256In Stock

Mfr. Part #
PAA132S

Mouser Part #
849-PAA132S

IXYS Integrated Circuits

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

Learn More

Datasheet

1.256In Stock

$16.785

$14.955

$14.282

$13.777

View

Min.: 1
Mult.: 1

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

PAA132STR
IXYS Integrated Circuits
1: $16.901
1.194In Stock

Mfr. Part #
PAA132STR

Mouser Part #
849-PAA132STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.194In Stock

Cut Tape

$16.901

$15.029

$14.271

$13.525

View

Reel

$11.569

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

PAA150S
IXYS Integrated Circuits
1: $15.302
267In Stock

Mfr. Part #
PAA150S

Mouser Part #
849-PAA150S

IXYS Integrated Circuits

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

Learn More

Datasheet

267In Stock

$15.302

$13.598

$12.925

$12.242

View

Min.: 1
Mult.: 1

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

PLA110STR
IXYS Integrated Circuits
1: $8.151
646In Stock
3.000On Order

Mfr. Part #
PLA110STR

Mouser Part #
849-PLA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

646In Stock

3.000On Order

Cut Tape

$8.151

$7.635

$6.794

$6.447

Reel

$5.174

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

PLA140LSTR
IXYS Integrated Circuits
1: $9.549
1.999In Stock

Mfr. Part #
PLA140LSTR

Mouser Part #
849-PLA140LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.999In Stock

Cut Tape

$9.549

$8.519

$8.130

$7.856

View

Reel

$6.889

MouseReel Available

Min.: 1
Mult.: 1

: 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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