.hide-partial { max-height: none; } .show-more { display: none; }

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 (298)

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Select a category below to see filtering options and narrow down your search.

Part #

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

CPC1706Y
IXYS Integrated Circuits
1: Rp64.211
4.342In Stock

Mfr. Part No.
CPC1706Y

Mouser Part No
849-CPC1706Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

Learn More

Datasheet

4.342In Stock

Rp64.211

Rp53.937

Rp51.919

Rp49.534

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1708J
IXYS Integrated Circuits
1: Rp201.989
607In Stock

Mfr. Part No.
CPC1708J

Mouser Part No
849-CPC1708J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

Learn More

Datasheet

607In Stock

Rp201.989

Rp189.331

Rp158.693

Rp153.189

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1709J
IXYS Integrated Circuits
1: Rp162.179
2.085In Stock

Mfr. Part No.
CPC1709J

Mouser Part No
849-CPC1709J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

Learn More

Datasheet

2.085In Stock

Rp162.179

Rp144.200

Rp128.605

Rp126.037

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1718J
IXYS Integrated Circuits
1: Rp173.553
2.020In Stock

Mfr. Part No.
CPC1718J

Mouser Part No
849-CPC1718J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

Learn More

Datasheet

2.020In Stock

Rp173.553

Rp154.657

Rp147.502

Rp142.365

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

CPC1727J
IXYS Integrated Circuits
1: Rp219.051
543In Stock

Mfr. Part No.
CPC1727J

Mouser Part No
849-CPC1727J

IXYS Integrated Circuits

Solid State Relays - PCB Mount DC Only Single Pole i4-PAC

Learn More

Datasheet

543In Stock

Rp219.051

Rp195.201

Rp186.212

Rp179.791

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST-NO 4PIN SIP

CPC1906Y
IXYS Integrated Circuits
1: Rp118.699
548In Stock

Mfr. Part No.
CPC1906Y

Mouser Part No
849-CPC1906Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 4PIN SIP

Learn More

Datasheet

548In Stock

Rp118.699

Rp105.856

Rp100.903

Rp97.417

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

CPC1907B
IXYS Integrated Circuits
1: Rp102.554
3.193In Stock
5.325On Order

Mfr. Part No.
CPC1907B

Mouser Part No
849-CPC1907B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

Learn More

Datasheet

3.193In Stock

5.325On Order

Rp102.554

Rp75.035

Rp71.916

Rp70.449

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay

CPC1909J
IXYS Integrated Circuits
1: Rp205.475
1.131In Stock

Mfr. Part No.
CPC1909J

Mouser Part No
849-CPC1909J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay

Learn More

Datasheet

1.131In Stock

Rp205.475

Rp183.093

Rp174.837

Rp168.783

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay

CPC1916Y
IXYS Integrated Circuits
1: Rp110.810
986In Stock
475Expected 16/07/2026

Mfr. Part No.
CPC1916Y

Mouser Part No
849-CPC1916Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay

Learn More

Datasheet

986In Stock

475Expected 16/07/2026

Rp110.810

Rp105.490

Rp105.306

Rp103.105

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay

CPC1926Y
IXYS Integrated Circuits
1: Rp108.608
1.287In Stock

Mfr. Part No.
CPC1926Y

Mouser Part No
849-CPC1926Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay

Learn More

Datasheet

1.287In Stock

Rp108.608

Rp101.637

Rp90.262

Rp85.676

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

CPC1927J
IXYS Integrated Circuits
1: Rp303.993
298In Stock

Mfr. Part No.
CPC1927J

Mouser Part No
849-CPC1927J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

Learn More

Datasheet

298In Stock

Rp303.993

Rp270.787

Rp249.506

Rp240.883

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: Rp90.079
2.522In Stock

Mfr. Part No.
CPC1966B

Mouser Part No
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

Learn More

Datasheet

2.522In Stock

Rp90.079

Rp80.355

Rp73.384

Rp71.366

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

CPC1966YX6
IXYS Integrated Circuits
1: Rp128.239
3.148In Stock

Mfr. Part No.
CPC1966YX6

Mouser Part No
849-CPC1966YX6

IXYS Integrated Circuits

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

Learn More

Datasheet

3.148In Stock

Rp128.239

Rp114.296

Rp108.975

Rp105.306

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

CPC1968J
IXYS Integrated Circuits
1: Rp421.775
475In Stock

Mfr. Part No.
CPC1968J

Mouser Part No
849-CPC1968J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

Learn More

Datasheet

475In Stock

Rp421.775

Rp375.726

Rp354.078

Rp342.520

View

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

CPC1976Y
IXYS Integrated Circuits
1: Rp60.175
5.791In Stock

Mfr. Part No.
CPC1976Y

Mouser Part No
849-CPC1976Y

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

Learn More

Datasheet

5.791In Stock

Rp60.175

Rp47.516

Rp44.764

Rp44.030

Quote

Min.: 1
Mult.: 1

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

CPC1976YX6
IXYS Integrated Circuits
1: Rp118.148
555In Stock

Mfr. Part No.
CPC1976YX6

Mouser Part No
849-CPC1976YX6

IXYS Integrated Circuits

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

Learn More

Datasheet

555In Stock

Rp118.148

Rp83.474

Rp59.258

Rp56.873

Rp54.855

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: Rp216.483
422In Stock
824Expected 30/04/2026

Mfr. Part No.
CPC1977J

Mouser Part No
849-CPC1977J

IXYS Integrated Circuits

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

Learn More

Datasheet

422In Stock

824Expected 30/04/2026

Rp216.483

Rp192.816

Rp184.010

Rp177.773

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

CPC1978J
IXYS Integrated Circuits
1: Rp241.250
378In Stock

Mfr. Part No.
CPC1978J

Mouser Part No
849-CPC1978J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST-NO 4PIN SOP

Learn More

Datasheet

378In Stock

Rp241.250

Rp215.015

Rp205.108

Rp198.137

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation

CPC1983Y
IXYS Integrated Circuits
1: Rp97.050
1.184In Stock

Mfr. Part No.
CPC1983Y

Mouser Part No
849-CPC1983Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation

Learn More

Datasheet

1.184In Stock

Rp97.050

Rp79.805

Rp77.053

Rp73.567

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A

CPC2907B
IXYS Integrated Circuits
1: Rp190.798
339In Stock

Mfr. Part No.
CPC2907B

Mouser Part No
849-CPC2907B

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A

Learn More

Datasheet

339In Stock

Rp190.798

Rp170.067

Rp162.179

Rp156.675

View

Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: Rp48.250
1.706In Stock

Mfr. Part No.
LAA108STR

Mouser Part No
849-LAA108STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.706In Stock

Cut Tape

Rp48.250

Rp39.627

Rp38.343

Rp36.692

Reel

Rp33.757

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

LAA110
IXYS Integrated Circuits
1: Rp86.960
3.243In Stock

Mfr. Part No.
LAA110

Mouser Part No
849-LAA110

IXYS Integrated Circuits

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

Learn More

Datasheet

3.243In Stock

Rp86.960

Rp77.604

Rp73.751

Rp65.679

View

Min.: 1
Mult.: 1

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

LAA110LSTR
IXYS Integrated Circuits
1: Rp85.125
931In Stock

Mfr. Part No.
LAA110LSTR

Mouser Part No
849-LAA110LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

931In Stock

Cut Tape

Rp85.125

Rp75.952

Rp72.467

Rp70.082

Reel

Rp57.973

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

LAA110S
IXYS Integrated Circuits
1: Rp86.960
1.888In Stock

Mfr. Part No.
LAA110S

Mouser Part No
849-LAA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

1.888In Stock

Rp86.960

Rp77.604

Rp73.934

Rp71.549

View

Min.: 1
Mult.: 1

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

LAA110STR
IXYS Integrated Circuits
1: Rp83.291
1.312In Stock
3.000Expected 18/05/2026

Mfr. Part No.
LAA110STR

Mouser Part No
849-LAA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1.312In Stock

3.000Expected 18/05/2026

Cut Tape

Rp83.291

Rp74.301

Rp70.816

Rp68.431

Reel

Rp58.707

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

All Results (298)

Customer Service Office

Company

Resources

Support

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

All Results (298)

Electromechanical

Opto-electronics