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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 #

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

CPC1593GS
IXYS Integrated Circuits
1: $6.52
1,015In Stock

Mfr. Part No.
CPC1593GS

Mouser Part No
849-CPC1593GS

IXYS Integrated Circuits

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

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Datasheet

1,015In Stock

$6.52

$5.81

$5.55

$5.35

View

Min.: 1
Mult.: 1

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

CPC1726Y
IXYS Integrated Circuits
1: $7.80
572In Stock

Mfr. Part No.
CPC1726Y

Mouser Part No
849-CPC1726Y

IXYS Integrated Circuits

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

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Datasheet

572In Stock

$7.80

$6.95

$6.63

$6.40

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Min.: 1
Mult.: 1

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

CPC1906Y
IXYS Integrated Circuits
1: $13.02
251In Stock

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

251In Stock

$13.02

$11.58

$10.99

$10.49

View

Min.: 1
Mult.: 1

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

CPC1916Y
IXYS Integrated Circuits
1: $12.09
292In Stock
1,400On Order

Mfr. Part No.
CPC1916Y

Mouser Part No
849-CPC1916Y

IXYS Integrated Circuits

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

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Datasheet

292In Stock

1,400On Order

$12.09

$11.82

$11.28

$10.89

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Min.: 1
Mult.: 1

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

CPC1927J
IXYS Integrated Circuits
1: $31.80
238In Stock

Mfr. Part No.
CPC1927J

Mouser Part No
849-CPC1927J

IXYS Integrated Circuits

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

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Datasheet

238In Stock

$31.80

$28.56

$27.26

$26.32

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: $9.82
581In Stock
1,975Expected 24/07/2026

Mfr. Part No.
CPC1966B

Mouser Part No
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

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Datasheet

581In Stock

1,975Expected 24/07/2026

$9.82

$8.75

$8.35

$8.06

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Min.: 1
Mult.: 1

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

CPC1972GSTR
IXYS Integrated Circuits
1: $2.80
3,684In Stock

Mfr. Part No.
CPC1972GSTR

Mouser Part No
849-CPC1972GSTR

IXYS Integrated Circuits

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

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Datasheet

3,684In Stock

Cut Tape

$2.80

$2.30

$2.17

$2.09

Reel

$2.02

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1976Y
IXYS Integrated Circuits
1: $6.93
2,775In Stock
5,975Expected 11/12/2026

Mfr. Part No.
CPC1976Y

Mouser Part No
849-CPC1976Y

IXYS Integrated Circuits

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

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Datasheet

2,775In Stock

5,975Expected 11/12/2026

$6.93

$4.94

$4.51

View

Min.: 1
Mult.: 1

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

CPC1976YX6
IXYS Integrated Circuits
1: $9.99
356In 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

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Datasheet

356In Stock

$9.99

$8.21

$6.81

$6.17

View

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: $23.29
783In Stock
450Expected 07/06/2027

Mfr. Part No.
CPC1977J

Mouser Part No
849-CPC1977J

IXYS Integrated Circuits

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

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Datasheet

783In Stock

450Expected 07/06/2027

$23.29

$20.87

$19.81

$19.13

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Min.: 1
Mult.: 1

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

CPC1978J
IXYS Integrated Circuits
1: $25.47
56In Stock
550On Order

Mfr. Part No.
CPC1978J

Mouser Part No
849-CPC1978J

IXYS Integrated Circuits

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

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Datasheet

56In Stock

550On Order

$25.47

$23.05

$21.92

$20.91

Min.: 1
Mult.: 1

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

CPC1981Y
IXYS Integrated Circuits
1: $7.25
1,919In Stock
1,025Expected 20/07/2026

Mfr. Part No.
CPC1981Y

Mouser Part No
849-CPC1981Y

IXYS Integrated Circuits

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

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Datasheet

1,919In Stock

1,025Expected 20/07/2026

$7.25

$7.05

$6.72

$6.49

View

Min.: 1
Mult.: 1

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

LAA108
IXYS Integrated Circuits
1: $5.32
581In 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

581In Stock

$5.32

$4.75

$4.53

$4.37

View

Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: $5.09
2,873In Stock

Mfr. Part No.
LAA108STR

Mouser Part No
849-LAA108STR

IXYS Integrated Circuits

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

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Datasheet

2,873In Stock

Cut Tape

$5.09

$4.54

$4.33

$4.18

Reel

$3.57

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA110S
IXYS Integrated Circuits
1: $9.19
1,573In Stock
1,000On Order

Mfr. Part No.
LAA110S

Mouser Part No
849-LAA110S

IXYS Integrated Circuits

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

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Datasheet

1,573In Stock

1,000On Order

$9.19

$8.19

$7.82

$7.54

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST 1 Form A

LAA127
IXYS Integrated Circuits
1: $12.10
621In Stock

Mfr. Part No.
LAA127

Mouser Part No
849-LAA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST 1 Form A

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Datasheet

621In Stock

$12.10

$10.79

$10.30

$9.94

View

Min.: 1
Mult.: 1

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

LAA710STR
IXYS Integrated Circuits
1: $18.48
126In Stock
3,000On Order

Mfr. Part No.
LAA710STR

Mouser Part No
849-LAA710STR

IXYS Integrated Circuits

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

Learn More

Datasheet

126In Stock

3,000On Order

Cut Tape

$18.48

$16.46

$15.72

$15.18

View

Reel

$13.04

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA110L
IXYS Integrated Circuits
1: $4.07
1,008In Stock
400Expected 24/08/2026

Mfr. Part No.
LCA110L

Mouser Part No
849-LCA110L

IXYS Integrated Circuits

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

Learn More

Datasheet

1,008In Stock

400Expected 24/08/2026

$4.07

$3.81

$3.68

$3.54

View

Min.: 1
Mult.: 1

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

LCA110S
IXYS Integrated Circuits
1: $4.26
5,229In 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

5,229In Stock

$4.26

$3.80

$3.63

$3.48

View

Min.: 1
Mult.: 1

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

LCA127STR
IXYS Integrated Circuits
1: $6.01
1,439In Stock

Mfr. Part No.
LCA127STR

Mouser Part No
849-LCA127STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,439In Stock

Cut Tape

$6.01

$5.62

$5.48

$5.38

View

Reel

$4.53

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA182S
IXYS Integrated Circuits
1: $5.16
836In Stock

Mfr. Part No.
LCA182S

Mouser Part No
849-LCA182S

IXYS Integrated Circuits

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

Learn More

Datasheet

836In Stock

$5.16

$4.60

$4.39

$4.23

View

Min.: 1
Mult.: 1

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

LCA182STR
IXYS Integrated Circuits
1: $4.98
3,435In Stock
2,000Expected 15/01/2027

Mfr. Part No.
LCA182STR

Mouser Part No
849-LCA182STR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,435In Stock

2,000Expected 15/01/2027

Cut Tape

$4.98

$4.44

$4.24

$4.10

Reel

$3.48

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA701
IXYS Integrated Circuits
1: $11.21
560In Stock

Mfr. Part No.
LCA701

Mouser Part No
849-LCA701

IXYS Integrated Circuits

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

Learn More

Datasheet

560In Stock

$11.21

$9.99

$9.54

$9.20

View

Min.: 1
Mult.: 1

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

LCA701S
IXYS Integrated Circuits
1: $10.31
690In Stock
7,000On Order

Mfr. Part No.
LCA701S

Mouser Part No
849-LCA701S

IXYS Integrated Circuits

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

Learn More

Datasheet

690In Stock

7,000On Order

$10.31

$9.19

$8.77

$8.46

View

Min.: 1
Mult.: 1

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

LCA701STR
IXYS Integrated Circuits
1: $10.76
1,734In Stock
1,000Expected 24/08/2026

Mfr. Part No.
LCA701STR

Mouser Part No
849-LCA701STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,734In Stock

1,000Expected 24/08/2026

Cut Tape

$10.76

$10.09

$8.97

$8.52

View

Reel

$7.10

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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