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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 #

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

CPC1972G
IXYS Integrated Circuits
1: Rp27.702
424In Stock

Mfr. Part No.
CPC1972G

Mouser Part No
849-CPC1972G

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

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Datasheet

424In Stock

Rp27.702

Rp22.933

Rp21.648

Rp20.731

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Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

CPC1972GS
IXYS Integrated Circuits
1: Rp27.702
489In Stock

Mfr. Part No.
CPC1972GS

Mouser Part No
849-CPC1972GS

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay

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Datasheet

489In Stock

Rp27.702

Rp22.933

Rp21.648

Rp20.914

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Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 400V Single Pole SIP Power Relay

CPC1973Y
IXYS Integrated Circuits
1: Rp97.234
100In Stock

Mfr. Part No.
CPC1973Y

Mouser Part No
849-CPC1973Y

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V Single Pole SIP Power Relay

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Datasheet

100In Stock

Rp97.234

Rp86.593

Rp79.255

Rp71.366

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Min.: 1
Mult.: 1

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

CPC1983B
IXYS Integrated Circuits
1: Rp99.435
50In Stock

Mfr. Part No.
CPC1983B

Mouser Part No
849-CPC1983B

IXYS Integrated Circuits

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

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Datasheet

50In Stock

Rp99.435

Rp80.722

Rp77.053

Rp73.751

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Min.: 1
Mult.: 1

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

LAA100L
IXYS Integrated Circuits
1: Rp95.766
149In Stock

Mfr. Part No.
LAA100L

Mouser Part No
849-LAA100L

IXYS Integrated Circuits

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

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Datasheet

149In Stock

Rp95.766

Rp92.280

Rp73.934

Rp64.945

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Min.: 1
Mult.: 1

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

LAA100LSTR
IXYS Integrated Circuits
1: Rp93.932
1.000In Stock

Mfr. Part No.
LAA100LSTR

Mouser Part No
849-LAA100LSTR

IXYS Integrated Circuits

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

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Datasheet

1.000In Stock

Cut Tape

Rp93.932

Rp88.061

Rp70.449

Rp65.128

Reel

Rp62.927

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

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

LAA108
IXYS Integrated Circuits
1: Rp50.452
359In Stock

Mfr. Part No.
LAA108

Mouser Part No
849-LAA108

IXYS Integrated Circuits

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

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Datasheet

359In Stock

Rp50.452

Rp45.131

Rp43.113

Rp41.279

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Min.: 1
Mult.: 1

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

LAA108S
IXYS Integrated Circuits
1: Rp50.452
309In Stock

Mfr. Part No.
LAA108S

Mouser Part No
849-LAA108S

IXYS Integrated Circuits

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

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Datasheet

309In Stock

Rp50.452

Rp41.645

Rp39.994

Rp39.077

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Min.: 1
Mult.: 1

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

LAA110L
IXYS Integrated Circuits
1: Rp89.162
96In Stock

Mfr. Part No.
LAA110L

Mouser Part No
849-LAA110L

IXYS Integrated Circuits

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

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Datasheet

96In Stock

Rp89.162

Rp79.438

Rp75.952

Rp73.201

View

Min.: 1
Mult.: 1

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

LAA110LS
IXYS Integrated Circuits
1: Rp67.697
6In Stock

Mfr. Part No.
LAA110LS

Mouser Part No
849-LAA110LS

IXYS Integrated Circuits

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

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Datasheet

6In Stock

Rp67.697

Rp50.452

Rp50.268

Min.: 1
Mult.: 1

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

LAA120
IXYS Integrated Circuits
1: Rp86.960
146In Stock

Mfr. Part No.
LAA120

Mouser Part No
849-LAA120

IXYS Integrated Circuits

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

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Datasheet

146In Stock

Rp86.960

Rp78.888

Rp74.485

Rp71.366

View

Min.: 1
Mult.: 1

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

LAA120S
IXYS Integrated Circuits
1: Rp67.697
5In Stock

Mfr. Part No.
LAA120S

Mouser Part No
849-LAA120S

IXYS Integrated Circuits

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

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Datasheet

5In Stock

Rp67.697

Rp55.772

Rp53.754

Rp51.369

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DUAL POLE

LAA125
IXYS Integrated Circuits
1: Rp85.125
20In Stock
100Expected 21/05/2026

Mfr. Part No.
LAA125

Mouser Part No
849-LAA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount DUAL POLE

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Datasheet

20In Stock

100Expected 21/05/2026

Rp85.125

Rp75.952

Rp72.467

Rp69.715

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

LAA125L
IXYS Integrated Circuits
1: Rp92.097
85In Stock

Mfr. Part No.
LAA125L

Mouser Part No
849-LAA125L

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

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Datasheet

85In Stock

Rp92.097

Rp75.769

Rp73.017

Rp70.449

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

LAA125LS
IXYS Integrated Circuits
1: Rp86.960
93In Stock

Mfr. Part No.
LAA125LS

Mouser Part No
849-LAA125LS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

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Datasheet

93In Stock

Rp86.960

Rp68.981

Rp65.495

Rp63.477

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

LAA125S
IXYS Integrated Circuits
1: Rp85.125
159In Stock

Mfr. Part No.
LAA125S

Mouser Part No
849-LAA125S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

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Datasheet

159In Stock

Rp85.125

Rp69.898

Rp67.146

Rp61.276

View

Min.: 1
Mult.: 1

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

LAA127LS
IXYS Integrated Circuits
1: Rp114.663
90In Stock

Mfr. Part No.
LAA127LS

Mouser Part No
849-LAA127LS

IXYS Integrated Circuits

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

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Datasheet

90In Stock

Rp114.663

Rp94.115

Rp90.996

Rp84.575

View

Min.: 1
Mult.: 1

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

LAA127S
IXYS Integrated Circuits
1: Rp114.663
298In Stock

Mfr. Part No.
LAA127S

Mouser Part No
849-LAA127S

IXYS Integrated Circuits

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

Learn More

Datasheet

298In Stock

Rp114.663

Rp94.298

Rp90.996

Rp88.795

View

Min.: 1
Mult.: 1

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

LCA100LS
IXYS Integrated Circuits
1: Rp58.891
12In Stock

Mfr. Part No.
LCA100LS

Mouser Part No
849-LCA100LS

IXYS Integrated Circuits

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

Learn More

Datasheet

12In Stock

Rp58.891

Rp48.433

Rp44.948

Rp42.196

Rp40.728

Min.: 1
Mult.: 1

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

LCA110LS
IXYS Integrated Circuits
1: Rp36.142
53In Stock

Mfr. Part No.
LCA110LS

Mouser Part No
849-LCA110LS

IXYS Integrated Circuits

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

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Datasheet

53In Stock

Rp36.142

Rp29.721

Rp28.436

Rp27.152

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: Rp58.891
2In Stock
3.050On Order

Mfr. Part No.
LCA120

Mouser Part No
849-LCA120

IXYS Integrated Circuits

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

Learn More

Datasheet

2In Stock

3.050On Order

Rp58.891

Rp48.433

Rp46.599

Rp43.847

View

Min.: 1
Mult.: 1

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

LCA120L
IXYS Integrated Circuits
1: Rp58.891
100In Stock

Mfr. Part No.
LCA120L

Mouser Part No
849-LCA120L

IXYS Integrated Circuits

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

Learn More

Datasheet

100In Stock

Rp58.891

Rp48.067

Rp44.214

Rp42.196

Rp41.095

Min.: 1
Mult.: 1

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

LCA120LS
IXYS Integrated Circuits
1: Rp64.761
94In Stock

Mfr. Part No.
LCA120LS

Mouser Part No
849-LCA120LS

IXYS Integrated Circuits

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

Learn More

Datasheet

94In Stock

Rp64.761

Rp51.552

Rp45.682

Rp41.462

View

Min.: 1
Mult.: 1

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

LCA120S
IXYS Integrated Circuits
1: Rp51.002
340In Stock

Mfr. Part No.
LCA120S

Mouser Part No
849-LCA120S

IXYS Integrated Circuits

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

Learn More

Datasheet

340In Stock

Rp51.002

Rp49.901

Rp46.966

Rp45.682

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

LCA125
IXYS Integrated Circuits
1: Rp67.697
10In Stock
150Expected 11/03/2026

Mfr. Part No.
LCA125

Mouser Part No
849-LCA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

Learn More

Datasheet

10In Stock

150Expected 11/03/2026

Rp67.697

Rp49.167

Rp48.984

Rp47.700

View

Min.: 1
Mult.: 1

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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