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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 (298)

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Part #

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

LCA127STR
IXYS Integrated Circuits
1: $3.58
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

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Datasheet

1,439In Stock

Cut Tape

$3.58

$3.19

$3.05

$2.94

Reel

$2.52

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA182STR
IXYS Integrated Circuits
1: $2.57
3,335In Stock
2,000Expected 2026/09/14

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

3,335In Stock

2,000Expected 2026/09/14

Cut Tape

$2.57

$2.30

$2.19

$2.12

Reel

$1.72

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA701
IXYS Integrated Circuits
1: $5.79
410In Stock

Mfr. Part No.
LCA701

Mouser Part No
849-LCA701

IXYS Integrated Circuits

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

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Datasheet

410In Stock

$5.79

$5.16

$4.93

$4.76

View

Min.: 1
Mult.: 1

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

LCA701S
IXYS Integrated Circuits
1: $5.33
1,105In Stock
7,000Expected 2026/07/06

Mfr. Part No.
LCA701S

Mouser Part No
849-LCA701S

IXYS Integrated Circuits

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

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Datasheet

1,105In Stock

7,000Expected 2026/07/06

$5.33

$4.91

$4.52

$4.37

Min.: 1
Mult.: 1

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

LCA710S
IXYS Integrated Circuits
1: $5.00
2,022In Stock
1,750Expected 2026/04/20

Mfr. Part No.
LCA710S

Mouser Part No
849-LCA710S

IXYS Integrated Circuits

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

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Datasheet

2,022In Stock

1,750Expected 2026/04/20

$5.00

$4.47

$4.26

$3.58

$3.38

Min.: 1
Mult.: 1

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

LCA710STR
IXYS Integrated Circuits
1: $4.77
3,999In Stock
4,000Expected 2026/10/07

Mfr. Part No.
LCA710STR

Mouser Part No
849-LCA710STR

IXYS Integrated Circuits

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

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Datasheet

3,999In Stock

4,000Expected 2026/10/07

Cut Tape

$4.77

$4.26

$4.07

$3.93

Reel

$3.23

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA717STR
IXYS Integrated Circuits
1: $4.59
3,000In Stock

Mfr. Part No.
LCA717STR

Mouser Part No
849-LCA717STR

IXYS Integrated Circuits

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

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Datasheet

3,000In Stock

Cut Tape

$4.59

$4.19

$4.04

$3.93

Reel

$3.41

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PAA110STR
IXYS Integrated Circuits
1: $6.47
1,609In Stock

Mfr. Part No.
PAA110STR

Mouser Part No
849-PAA110STR

IXYS Integrated Circuits

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

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Datasheet

1,609In Stock

Cut Tape

$6.47

$6.04

$5.77

$5.57

Reel

$4.78

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PAA132S
IXYS Integrated Circuits
1: $8.26
1,431In Stock

Mfr. Part No.
PAA132S

Mouser Part No
849-PAA132S

IXYS Integrated Circuits

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

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Datasheet

1,431In Stock

$8.26

$7.34

$7.01

$6.12

View

Min.: 1
Mult.: 1

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

PAA132STR
IXYS Integrated Circuits
1: $8.56
1,216In Stock

Mfr. Part No.
PAA132STR

Mouser Part No
849-PAA132STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,216In Stock

Cut Tape

$8.56

$8.04

$7.14

$6.78

View

Reel

$5.55

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PAA140
IXYS Integrated Circuits
1: $7.71
2,023In Stock

Mfr. Part No.
PAA140

Mouser Part No
849-PAA140

IXYS Integrated Circuits

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

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Datasheet

2,023In Stock

$7.71

$6.87

$6.57

$6.26

View

Min.: 1
Mult.: 1

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

PAA140STR
IXYS Integrated Circuits
1: $7.40
2,586In Stock

Mfr. Part No.
PAA140STR

Mouser Part No
849-PAA140STR

IXYS Integrated Circuits

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

Learn More

Datasheet

2,586In Stock

Cut Tape

$7.40

$6.59

$6.29

$6.08

View

Reel

$4.85

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PLA110
IXYS Integrated Circuits
1: $3.86
4,238In Stock

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

4,238In Stock

$3.86

$3.44

$3.29

$3.16

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

PLA150STR
IXYS Integrated Circuits
1: $4.52
1,888In Stock

Mfr. Part No.
PLA150STR

Mouser Part No
849-PLA150STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

Learn More

Datasheet

1,888In Stock

Cut Tape

$4.52

$4.23

$3.76

$3.57

View

Reel

$3.06

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

PLA160STR
IXYS Integrated Circuits
1: $4.27
2,049In Stock

Mfr. Part No.
PLA160STR

Mouser Part No
849-PLA160STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

Learn More

Datasheet

2,049In Stock

Cut Tape

$4.27

$3.51

$3.40

$3.24

Reel

$3.01

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

PLA170
IXYS Integrated Circuits
1: $3.47
820In Stock

Mfr. Part No.
PLA170

Mouser Part No
849-PLA170

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

Learn More

Datasheet

820In Stock

$3.47

$2.85

$2.67

$2.61

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

PLA170S
IXYS Integrated Circuits
1: $3.47
816In Stock

Mfr. Part No.
PLA170S

Mouser Part No
849-PLA170S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

Learn More

Datasheet

816In Stock

$3.47

$3.09

$2.95

$2.84

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR

PLA171P
IXYS Integrated Circuits
1: $3.77
1,569In Stock

Mfr. Part No.
PLA171P

Mouser Part No
849-PLA171P

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR

Learn More

Datasheet

1,569In Stock

$3.77

$3.37

$3.26

$3.20

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

PLA171PTR
IXYS Integrated Circuits
1: $3.66
966In Stock

Mfr. Part No.
PLA171PTR

Mouser Part No
849-PLA171PTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

Learn More

Datasheet

966In Stock

Cut Tape

$3.66

$3.26

$3.12

$3.00

Reel

$2.58

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

PLA172PTR
IXYS Integrated Circuits
1: $5.01
579In Stock

Mfr. Part No.
PLA172PTR

Mouser Part No
849-PLA172PTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

Learn More

Datasheet

579In Stock

Cut Tape

$5.01

$4.47

$4.27

$4.12

Reel

$3.51

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

PLA193STR
IXYS Integrated Circuits
1: $3.17
2,119In Stock

Mfr. Part No.
PLA193STR

Mouser Part No
849-PLA193STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

Learn More

Datasheet

2,119In Stock

Cut Tape

$3.17

$2.83

$2.70

$2.61

Reel

$2.27

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount RELAY, SS ICS

CPC1511Y
IXYS Integrated Circuits
1: $5.48
101In Stock

Mfr. Part No.
CPC1511Y

Mouser Part No
576-CPC1511Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY, SS ICS

Learn More

Datasheet

101In Stock

$5.48

$4.88

$4.66

$4.50

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay

CPC1008NTR
IXYS Integrated Circuits
1: $1.47
2,330In Stock
70,000On Order

Mfr. Part No.
CPC1008NTR

Mouser Part No
849-CPC1008NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay

Learn More

Datasheet

2,330In Stock

70,000On Order

Cut Tape

$1.47

Reel

$1.47

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

CPC1225N
IXYS Integrated Circuits
1: $1.81
104In Stock

Mfr. Part No.
CPC1225N

Mouser Part No
849-CPC1225N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

Learn More

Datasheet

104In Stock

$1.81

$1.65

$1.57

$1.51

View

Min.: 1
Mult.: 1

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

CPC1330GR
IXYS Integrated Circuits
1: $1.70
203In Stock
1,200On Order

Mfr. Part No.
CPC1330GR

Mouser Part No
849-CPC1330GR

IXYS Integrated Circuits

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

Learn More

Datasheet

203In Stock

1,200On Order

$1.70

$1.67

$1.57

$1.52

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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