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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 SPST-NO 6PIN DIP

PLA110
IXYS Integrated Circuits
1: Rp136.861
4.141Expected 22/02/2027

Mfr. Part No.
PLA110

Mouser Part No
849-PLA110

IXYS Integrated Circuits

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

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Datasheet

4.141Expected 22/02/2027

Rp136.861

Rp122.001

Rp116.497

Rp112.461

View

Min.: 1
Mult.: 1

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

PLA140STR
IXYS Integrated Circuits
1: Rp162.912
9.000Expected 08/02/2027

Mfr. Part No.
PLA140STR

Mouser Part No
849-PLA140STR

IXYS Integrated Circuits

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

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Datasheet

9.000Expected 08/02/2027

Cut Tape

Rp162.912

Rp145.117

Rp138.696

Rp133.926

View

Reel

Rp114.112

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

Solid State Relays - PCB Mount Single Pole Relay 400V 140mA

CPC1390GR
IXYS Integrated Circuits
1: Rp79.989
600Expected 25/09/2026

Mfr. Part No.
CPC1390GR

Mouser Part No
849-CPC1390GR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole Relay 400V 140mA

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Datasheet

600Expected 25/09/2026

Rp79.989

Rp71.366

Rp68.064

Rp65.679

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

CPC1510GS
IXYS Integrated Circuits
1: Rp129.156
1.782Expected 16/10/2026

Mfr. Part No.
CPC1510GS

Mouser Part No
849-CPC1510GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

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Datasheet

1.782Expected 16/10/2026

Rp129.156

Rp115.580

Rp106.590

Rp102.738

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

CPC1563GS
IXYS Integrated Circuits
1: Rp118.699
1.100Expected 01/01/2027

Mfr. Part No.
CPC1563GS

Mouser Part No
849-CPC1563GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

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Datasheet

1.100Expected 01/01/2027

Rp118.699

Rp105.856

Rp101.086

Rp97.417

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R

CPC1593GSTR
IXYS Integrated Circuits
1: Rp114.296
1.752Expected 13/01/2027

Mfr. Part No.
CPC1593GSTR

Mouser Part No
849-CPC1593GSTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R

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Datasheet

1.752Expected 13/01/2027

Cut Tape

Rp114.296

Rp101.820

Rp97.234

Rp93.932

Reel

Rp80.355

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

CPC1779J
IXYS Integrated Circuits
1: Rp494.792
100Expected 04/12/2026

Mfr. Part No.
CPC1779J

Mouser Part No
849-CPC1779J

IXYS Integrated Circuits

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

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Datasheet

100Expected 04/12/2026

Rp494.792

Rp450.027

Rp429.480

Rp412.602

View

Min.: 1
Mult.: 1

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

CPC1906Y
IXYS Integrated Circuits
1: Rp227.490
276Expected 11/12/2026

Mfr. Part No.
CPC1906Y

Mouser Part No
849-CPC1906Y

IXYS Integrated Circuits

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

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Datasheet

276Expected 11/12/2026

Rp227.490

Rp203.824

Rp193.917

Rp186.395

View

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

CPC1943GS
IXYS Integrated Circuits
1: Rp254.459
250Expected 23/11/2026

Mfr. Part No.
CPC1943GS

Mouser Part No
849-CPC1943GS

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

Learn More

Datasheet

250Expected 23/11/2026

Rp254.459

Rp177.222

Rp163.463

Rp154.290

Rp149.520

Min.: 1
Mult.: 1

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

LCA110LSTR
IXYS Integrated Circuits
1: Rp78.704
2.000Expected 19/10/2026

Mfr. Part No.
LCA110LSTR

Mouser Part No
849-LCA110LSTR

IXYS Integrated Circuits

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

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Datasheet

2.000Expected 19/10/2026

Cut Tape

Rp78.704

Rp70.082

Rp66.963

Rp64.394

View

Reel

Rp53.570

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

LCA712STR
IXYS Integrated Circuits
1: Rp194.651
2.000Expected 18/01/2027

Mfr. Part No.
LCA712STR

Mouser Part No
849-LCA712STR

IXYS Integrated Circuits

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

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Datasheet

2.000Expected 18/01/2027

Cut Tape

Rp194.651

Rp173.370

Rp165.664

Rp159.977

View

Reel

Rp134.660

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

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

PAA140S
IXYS Integrated Circuits
1: Rp274.823
1.050On Order

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

1.050On Order

Rp274.823

Rp244.736

Rp233.728

Rp225.656

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA

PLA192S
IXYS Integrated Circuits
1: Rp132.642
1.825On Order

Mfr. Part No.
PLA192S

Mouser Part No
849-PLA192S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA

Learn More

Datasheet

1.825On Order

Rp132.642

Rp130.257

Rp115.763

Rp109.893

View

Min.: 1
Mult.: 1

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

CPC1926Y
IXYS Integrated Circuits
1: Rp197.403
200On Order

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

200On Order

Rp197.403

Rp175.938

Rp167.866

Rp161.995

View

Min.: 1
Mult.: 1

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

CPC1983B
IXYS Integrated Circuits
1: Rp192.633
100Expected 02/09/2026

Mfr. Part No.
CPC1983B

Mouser Part No
849-CPC1983B

IXYS Integrated Circuits

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

Learn More

Datasheet

100Expected 02/09/2026

Rp192.633

Rp171.719

Rp163.830

Rp158.143

View

Min.: 1
Mult.: 1

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

LAA127S
IXYS Integrated Circuits
1: Rp221.987
48Expected 19/08/2026

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

48Expected 19/08/2026

Rp221.987

Rp197.953

Rp188.964

Rp182.359

View

Min.: 1
Mult.: 1

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

PLA140S
IXYS Integrated Circuits
1: Rp170.434
200Expected 25/01/2027

Mfr. Part No.
PLA140S

Mouser Part No
849-PLA140S

IXYS Integrated Circuits

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

Learn More

Datasheet

200Expected 25/01/2027

Rp170.434

Rp151.905

Rp145.117

Rp139.980

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation

CPC1394GV
IXYS Integrated Circuits
500: Rp53.203
2.200Factory Stock Available

Mfr. Part No.
CPC1394GV

Mouser Part No
849-CPC1394GV

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation

Learn More

Datasheet

2.200Factory Stock Available

More Info Available

Rp53.203

Rp52.286

Min.: 500
Mult.: 100

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

CPC1540G
IXYS Integrated Circuits
1: Rp107.508
950Factory Stock Available

Mfr. Part No.
CPC1540G

Mouser Part No
849-CPC1540G

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay

Learn More

Datasheet

950Factory Stock Available

More Info Available

Rp107.508

Rp95.766

Rp91.547

Rp88.244

View

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

CPC1943G
IXYS Integrated Circuits
1: Rp256.844
1.550Factory Stock Available

Mfr. Part No.
CPC1943G

Mouser Part No
849-CPC1943G

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

Learn More

Datasheet

1.550Factory Stock Available

More Info Available

Rp256.844

Rp225.105

Rp191.716

Rp185.111

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch

CPC1963GS
IXYS Integrated Circuits
1: Rp222.904
2.450Factory Stock Available

Mfr. Part No.
CPC1963GS

Mouser Part No
849-CPC1963GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch

Learn More

Datasheet

2.450Factory Stock Available

More Info Available

Rp222.904

Rp198.504

Rp189.698

Rp182.910

View

Min.: 1
Mult.: 1

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

LAA100LS
IXYS Integrated Circuits
1: Rp180.341
150Factory Stock Available

Mfr. Part No.
LAA100LS

Mouser Part No
849-LAA100LS

IXYS Integrated Circuits

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

Learn More

Datasheet

150Factory Stock Available

More Info Available

Rp180.341

Rp160.711

Rp153.556

Rp148.052

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA

LCA125S
IXYS Integrated Circuits
1: Rp141.264
750Factory Stock Available

Mfr. Part No.
LCA125S

Mouser Part No
849-LCA125S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA

Learn More

Datasheet

750Factory Stock Available

More Info Available

Rp141.264

Rp132.458

Rp123.469

Rp104.756

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR

OAA160STR
IXYS Integrated Circuits
1.000: Rp150.804
23.000Factory Stock Available

Mfr. Part No.
OAA160STR

Mouser Part No
849-OAA160STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR

Learn More

Datasheet

23.000Factory Stock Available

More Info Available

Reel

Rp150.804

Min.: 1.000
Mult.: 1.000

: 1.000

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

PAA190S
IXYS Integrated Circuits
100: Rp176.489
16.150Factory Stock Available

Mfr. Part No.
PAA190S

Mouser Part No
849-PAA190S

IXYS Integrated Circuits

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

Learn More

Datasheet

16.150Factory Stock Available

More Info Available

Rp176.489

Rp173.003

Rp169.517

Min.: 100
Mult.: 50

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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