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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: $2.34
424In Stock

Mfr. Part #
CPC1972G

Mouser Part #
849-CPC1972G

IXYS Integrated Circuits

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

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Datasheet

424In Stock

$2.34

$1.94

$1.83

$1.75

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Min.: 1
Mult.: 1

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

CPC1972GS
IXYS Integrated Circuits
1: $2.34
489In Stock

Mfr. Part #
CPC1972GS

Mouser Part #
849-CPC1972GS

IXYS Integrated Circuits

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

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Datasheet

489In Stock

$2.34

$1.94

$1.83

$1.77

View

Min.: 1
Mult.: 1

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

CPC1973Y
IXYS Integrated Circuits
1: $8.22
100In Stock

Mfr. Part #
CPC1973Y

Mouser Part #
849-CPC1973Y

IXYS Integrated Circuits

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

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Datasheet

100In Stock

$8.22

$7.32

$6.70

$6.03

View

Min.: 1
Mult.: 1

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

CPC1983B
IXYS Integrated Circuits
1: $8.40
50In Stock

Mfr. Part #
CPC1983B

Mouser Part #
849-CPC1983B

IXYS Integrated Circuits

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

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Datasheet

50In Stock

$8.40

$6.82

$6.51

$6.23

View

Min.: 1
Mult.: 1

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

LAA100L
IXYS Integrated Circuits
1: $8.09
149In Stock

Mfr. Part #
LAA100L

Mouser Part #
849-LAA100L

IXYS Integrated Circuits

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

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Datasheet

149In Stock

$8.09

$7.80

$6.25

$5.49

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Min.: 1
Mult.: 1

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

LAA100LSTR
IXYS Integrated Circuits
1: $7.94
1,000In Stock

Mfr. Part #
LAA100LSTR

Mouser Part #
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

$7.94

$7.44

$5.95

$5.50

Reel

$5.32

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

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

LAA108
IXYS Integrated Circuits
1: $4.26
359In Stock

Mfr. Part #
LAA108

Mouser Part #
849-LAA108

IXYS Integrated Circuits

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

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Datasheet

359In Stock

$4.26

$3.81

$3.64

$3.49

View

Min.: 1
Mult.: 1

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

LAA108S
IXYS Integrated Circuits
1: $4.26
309In Stock

Mfr. Part #
LAA108S

Mouser Part #
849-LAA108S

IXYS Integrated Circuits

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

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Datasheet

309In Stock

$4.26

$3.52

$3.38

$3.30

View

Min.: 1
Mult.: 1

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

LAA110L
IXYS Integrated Circuits
1: $7.53
96In Stock

Mfr. Part #
LAA110L

Mouser Part #
849-LAA110L

IXYS Integrated Circuits

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

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Datasheet

96In Stock

$7.53

$6.71

$6.42

$6.18

View

Min.: 1
Mult.: 1

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

LAA110LS
IXYS Integrated Circuits
1: $5.72
6In Stock

Mfr. Part #
LAA110LS

Mouser Part #
849-LAA110LS

IXYS Integrated Circuits

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

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Datasheet

6In Stock

$5.72

$4.26

$4.25

Min.: 1
Mult.: 1

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

LAA120
IXYS Integrated Circuits
1: $7.35
146In Stock

Mfr. Part #
LAA120

Mouser Part #
849-LAA120

IXYS Integrated Circuits

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

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Datasheet

146In Stock

$7.35

$6.67

$6.29

$6.03

View

Min.: 1
Mult.: 1

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

LAA120S
IXYS Integrated Circuits
1: $5.72
5In Stock

Mfr. Part #
LAA120S

Mouser Part #
849-LAA120S

IXYS Integrated Circuits

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

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Datasheet

5In Stock

$5.72

$4.71

$4.54

$4.34

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount DUAL POLE

LAA125
IXYS Integrated Circuits
1: $7.19
20In Stock
100Expected 2026-05-21

Mfr. Part #
LAA125

Mouser Part #
849-LAA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount DUAL POLE

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Datasheet

20In Stock

100Expected 2026-05-21

$7.19

$6.42

$6.12

$5.89

View

Min.: 1
Mult.: 1

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

LAA125L
IXYS Integrated Circuits
1: $7.78
85In Stock

Mfr. Part #
LAA125L

Mouser Part #
849-LAA125L

IXYS Integrated Circuits

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

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Datasheet

85In Stock

$7.78

$6.40

$6.17

$5.95

View

Min.: 1
Mult.: 1

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

LAA125LS
IXYS Integrated Circuits
1: $7.35
93In Stock

Mfr. Part #
LAA125LS

Mouser Part #
849-LAA125LS

IXYS Integrated Circuits

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

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Datasheet

93In Stock

$7.35

$5.83

$5.53

$5.36

View

Min.: 1
Mult.: 1

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

LAA125S
IXYS Integrated Circuits
1: $7.19
159In Stock

Mfr. Part #
LAA125S

Mouser Part #
849-LAA125S

IXYS Integrated Circuits

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

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Datasheet

159In Stock

$7.19

$5.91

$5.67

$5.18

View

Min.: 1
Mult.: 1

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

LAA127LS
IXYS Integrated Circuits
1: $9.69
90In Stock

Mfr. Part #
LAA127LS

Mouser Part #
849-LAA127LS

IXYS Integrated Circuits

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

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Datasheet

90In Stock

$9.69

$7.95

$7.69

$7.15

View

Min.: 1
Mult.: 1

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

LAA127S
IXYS Integrated Circuits
1: $9.69
298In Stock

Mfr. Part #
LAA127S

Mouser Part #
849-LAA127S

IXYS Integrated Circuits

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

Learn More

Datasheet

298In Stock

$9.69

$7.97

$7.69

$7.50

View

Min.: 1
Mult.: 1

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

LCA100LS
IXYS Integrated Circuits
1: $4.98
12In Stock

Mfr. Part #
LCA100LS

Mouser Part #
849-LCA100LS

IXYS Integrated Circuits

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

Learn More

Datasheet

12In Stock

$4.98

$4.09

$3.80

$3.57

$3.44

Min.: 1
Mult.: 1

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

LCA110LS
IXYS Integrated Circuits
1: $3.05
53In Stock

Mfr. Part #
LCA110LS

Mouser Part #
849-LCA110LS

IXYS Integrated Circuits

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

Learn More

Datasheet

53In Stock

$3.05

$2.51

$2.40

$2.29

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: $4.98
2In Stock
3,050On Order

Mfr. Part #
LCA120

Mouser Part #
849-LCA120

IXYS Integrated Circuits

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

Learn More

Datasheet

2In Stock

3,050On Order

$4.98

$4.09

$3.94

$3.70

View

Min.: 1
Mult.: 1

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

LCA120L
IXYS Integrated Circuits
1: $4.98
100In Stock

Mfr. Part #
LCA120L

Mouser Part #
849-LCA120L

IXYS Integrated Circuits

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

Learn More

Datasheet

100In Stock

$4.98

$4.06

$3.74

$3.57

$3.47

Min.: 1
Mult.: 1

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

LCA120LS
IXYS Integrated Circuits
1: $5.47
94In Stock

Mfr. Part #
LCA120LS

Mouser Part #
849-LCA120LS

IXYS Integrated Circuits

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

Learn More

Datasheet

94In Stock

$5.47

$4.36

$3.86

$3.50

View

Min.: 1
Mult.: 1

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

LCA120S
IXYS Integrated Circuits
1: $4.31
340In Stock

Mfr. Part #
LCA120S

Mouser Part #
849-LCA120S

IXYS Integrated Circuits

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

Learn More

Datasheet

340In Stock

$4.31

$4.22

$3.97

$3.86

View

Min.: 1
Mult.: 1

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

LCA125
IXYS Integrated Circuits
1: $5.72
10In Stock
150Expected 2026-03-11

Mfr. Part #
LCA125

Mouser Part #
849-LCA125

IXYS Integrated Circuits

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

Learn More

Datasheet

10In Stock

150Expected 2026-03-11

$5.72

$4.15

$4.14

$4.03

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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