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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 Single-Pole Relay 250V 200mA

LCA127LS
IXYS Integrated Circuits
1: $6.17
65In Stock

Mfr. Part #
LCA127LS

Mouser Part #
849-LCA127LS

IXYS Integrated Circuits

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

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Datasheet

65In Stock

$6.17

$5.78

$4.34

$4.28

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Min.: 1
Mult.: 1

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

LCA127S
IXYS Integrated Circuits
1: $5.60
113In Stock

Mfr. Part #
LCA127S

Mouser Part #
849-LCA127S

IXYS Integrated Circuits

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

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Datasheet

113In Stock

$5.60

$5.12

$4.74

$4.56

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Min.: 1
Mult.: 1

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

LCA129
IXYS Integrated Circuits
1: $4.60
120In Stock

Mfr. Part #
LCA129

Mouser Part #
849-LCA129

IXYS Integrated Circuits

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

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Datasheet

120In Stock

$4.60

$3.75

$3.69

$3.49

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Min.: 1
Mult.: 1

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

LCA182
IXYS Integrated Circuits
1: $4.19
111In Stock
250Expected 2026-08-10

Mfr. Part #
LCA182

Mouser Part #
849-LCA182

IXYS Integrated Circuits

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

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Datasheet

111In Stock

250Expected 2026-08-10

$4.19

$3.43

$3.32

$3.16

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Min.: 1
Mult.: 1

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

LCA182S
IXYS Integrated Circuits
1: $4.14
346In Stock
250Expected 2026-03-06

Mfr. Part #
LCA182S

Mouser Part #
849-LCA182S

IXYS Integrated Circuits

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

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Datasheet

346In Stock

250Expected 2026-03-06

$4.14

$3.69

$3.52

$3.36

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A

LCA710R
IXYS Integrated Circuits
1: $7.75
365In Stock

Mfr. Part #
LCA710R

Mouser Part #
849-LCA710R

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A

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Datasheet

365In Stock

$7.75

$6.91

$6.59

$6.29

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Min.: 1
Mult.: 1

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

LCA712S
IXYS Integrated Circuits
1: $8.90
244In Stock

Mfr. Part #
LCA712S

Mouser Part #
849-LCA712S

IXYS Integrated Circuits

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

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Datasheet

244In Stock

$8.90

$7.05

$6.99

$6.70

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

LCA715
IXYS Integrated Circuits
1: $8.45
167In Stock

Mfr. Part #
LCA715

Mouser Part #
849-LCA715

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET

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Datasheet

167In Stock

$8.45

$7.95

$7.72

$6.74

$6.17

Min.: 1
Mult.: 1

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

LCA717
IXYS Integrated Circuits
1: $8.00
406In Stock

Mfr. Part #
LCA717

Mouser Part #
849-LCA717

IXYS Integrated Circuits

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

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Datasheet

406In Stock

$8.00

$5.97

$5.50

$5.04

Quote

Min.: 1
Mult.: 1

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

LCA717S
IXYS Integrated Circuits
1: $8.00
364In Stock
450Expected 2026-04-21

Mfr. Part #
LCA717S

Mouser Part #
849-LCA717S

IXYS Integrated Circuits

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

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Datasheet

364In Stock

450Expected 2026-04-21

$8.00

$6.09

$5.95

$5.77

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Min.: 1
Mult.: 1

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

OAA160S
IXYS Integrated Circuits
1: $9.83
140In Stock

Mfr. Part #
OAA160S

Mouser Part #
849-OAA160S

IXYS Integrated Circuits

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

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Datasheet

140In Stock

$9.83

$8.76

$8.37

$8.06

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

OMA160
IXYS Integrated Circuits
1: $5.10
234In Stock

Mfr. Part #
OMA160

Mouser Part #
849-OMA160

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

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Datasheet

234In Stock

$5.10

$4.39

$4.20

$3.98

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

OMA160S
IXYS Integrated Circuits
1: $5.36
72In Stock

Mfr. Part #
OMA160S

Mouser Part #
849-OMA160S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

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Datasheet

72In Stock

$5.36

$4.40

$3.70

$3.66

View

Min.: 1
Mult.: 1

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

PAA110LS
IXYS Integrated Circuits
1: $9.19
2In Stock

Mfr. Part #
PAA110LS

Mouser Part #
849-PAA110LS

IXYS Integrated Circuits

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

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Datasheet

2In Stock

$9.19

$7.80

$7.49

$7.47

Min.: 1
Mult.: 1

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

PAA132
IXYS Integrated Circuits
1: $12.79
87In Stock

Mfr. Part #
PAA132

Mouser Part #
849-PAA132

IXYS Integrated Circuits

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

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Datasheet

87In Stock

$12.79

$11.63

$11.02

$9.89

View

Min.: 1
Mult.: 1

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

PAA140L
IXYS Integrated Circuits
1: $12.12
1In Stock

Mfr. Part #
PAA140L

Mouser Part #
849-PAA140L

IXYS Integrated Circuits

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

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Datasheet

1In Stock

$12.12

$10.80

$10.32

$9.95

View

Min.: 1
Mult.: 1

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

PAA140LS
IXYS Integrated Circuits
1: $12.17
41In Stock

Mfr. Part #
PAA140LS

Mouser Part #
849-PAA140LS

IXYS Integrated Circuits

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

Learn More

Datasheet

41In Stock

$12.17

$10.35

$9.98

$8.88

View

Min.: 1
Mult.: 1

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

PAA191
IXYS Integrated Circuits
1: $10.34
96In Stock

Mfr. Part #
PAA191

Mouser Part #
849-PAA191

IXYS Integrated Circuits

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

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Datasheet

96In Stock

$10.34

$9.64

$9.63

$9.61

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DPST-NO/NO 6PIN DIP

PAA193
IXYS Integrated Circuits
1: $8.94
91In Stock

Mfr. Part #
PAA193

Mouser Part #
849-PAA193

IXYS Integrated Circuits

Solid State Relays - PCB Mount DPST-NO/NO 6PIN DIP

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Datasheet

91In Stock

$8.94

$7.97

$7.61

$7.35

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR

PAA193S
IXYS Integrated Circuits
1: $8.76
285In Stock

Mfr. Part #
PAA193S

Mouser Part #
849-PAA193S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR

Learn More

Datasheet

285In Stock

$8.76

$7.81

$7.47

$7.19

View

Min.: 1
Mult.: 1

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

PLA110S
IXYS Integrated Circuits
1: $6.31
185In Stock

Mfr. Part #
PLA110S

Mouser Part #
849-PLA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

185In Stock

$6.31

$5.91

$4.71

$3.95

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA

PLA132
IXYS Integrated Circuits
1: $7.94
117In Stock

Mfr. Part #
PLA132

Mouser Part #
849-PLA132

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA

Learn More

Datasheet

117In Stock

$7.94

$6.29

$5.94

$5.29

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA

PLA132S
IXYS Integrated Circuits
1: $7.53
326In Stock

Mfr. Part #
PLA132S

Mouser Part #
849-PLA132S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA

Learn More

Datasheet

326In Stock

$7.53

$6.71

$6.42

$6.18

View

Min.: 1
Mult.: 1

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

PLA140L
IXYS Integrated Circuits
1: $7.61
97In Stock

Mfr. Part #
PLA140L

Mouser Part #
849-PLA140L

IXYS Integrated Circuits

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

Learn More

Datasheet

97In Stock

$7.61

$6.26

$6.23

$4.94

View

Min.: 1
Mult.: 1

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

PLA140LS
IXYS Integrated Circuits
1: $7.61
69In Stock

Mfr. Part #
PLA140LS

Mouser Part #
849-PLA140LS

IXYS Integrated Circuits

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

Learn More

Datasheet

69In Stock

$7.61

$6.26

$6.01

$5.46

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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