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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 400V 140mA

CPC1390G
IXYS Integrated Circuits
1: $2.26
492In Stock

Mfr. Part No.
CPC1390G

Mouser Part No
849-CPC1390G

IXYS Integrated Circuits

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

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Datasheet

492In Stock

$2.26

$1.86

$1.78

$1.73

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

CPC1393GR
IXYS Integrated Circuits
1: $2.45
695In Stock

Mfr. Part No.
CPC1393GR

Mouser Part No
849-CPC1393GR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

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Datasheet

695In Stock

$2.45

$2.19

$2.09

$2.02

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

CPC1393GV
IXYS Integrated Circuits
1: $1.78
52In Stock

Mfr. Part No.
CPC1393GV

Mouser Part No
849-CPC1393GV

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

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Datasheet

52In Stock

$1.78

$1.54

$1.51

$1.45

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Min.: 1
Mult.: 1

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

CPC1394G
IXYS Integrated Circuits
1: $2.45
852In Stock

Mfr. Part No.
CPC1394G

Mouser Part No
849-CPC1394G

IXYS Integrated Circuits

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

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Datasheet

852In Stock

$2.45

$2.19

$2.09

$2.02

View

Min.: 1
Mult.: 1

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

CPC1394GR
IXYS Integrated Circuits
1: $2.43
507In Stock
100Expected 2026/06/05

Mfr. Part No.
CPC1394GR

Mouser Part No
849-CPC1394GR

IXYS Integrated Circuits

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

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Datasheet

507In Stock

100Expected 2026/06/05

$2.43

$2.19

$2.08

Min.: 1
Mult.: 1

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

CPC1540GS
IXYS Integrated Circuits
1: $3.11
28In Stock
3,150Expected 2026/08/06

Mfr. Part No.
CPC1540GS

Mouser Part No
849-CPC1540GS

IXYS Integrated Circuits

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

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Datasheet

28In Stock

3,150Expected 2026/08/06

$3.11

$2.80

$2.63

$2.58

Min.: 1
Mult.: 1

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

CPC1540GSTR
IXYS Integrated Circuits
1: $2.95
6In Stock

Mfr. Part No.
CPC1540GSTR

Mouser Part No
849-CPC1540GSTR

IXYS Integrated Circuits

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

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Datasheet

6In Stock

Cut Tape

$2.95

$2.58

$2.47

$2.38

Reel

$1.93

View

Min.: 1
Mult.: 1

: 1,000

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

CPC1560GSTR
IXYS Integrated Circuits
1: $3.90
62In Stock

Mfr. Part No.
CPC1560GSTR

Mouser Part No
849-CPC1560GSTR

IXYS Integrated Circuits

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

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Datasheet

62In Stock

Cut Tape

$3.90

$3.55

$3.27

$3.14

View

Reel

$2.70

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1563GS
IXYS Integrated Circuits
1: $3.34
500In Stock

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

500In Stock

$3.34

$2.98

$2.85

$2.73

View

Min.: 1
Mult.: 1

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

CPC1726Y
IXYS Integrated Circuits
1: $4.04
397In Stock
425Expected 2026/04/23

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

397In Stock

425Expected 2026/04/23

$4.04

$3.61

$3.37

$3.31

View

Min.: 1
Mult.: 1

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

CPC1786J
IXYS Integrated Circuits
1: $15.10
70In Stock
75Expected 2027/02/01

Mfr. Part No.
CPC1786J

Mouser Part No
849-CPC1786J

IXYS Integrated Circuits

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

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Datasheet

70In Stock

75Expected 2027/02/01

$15.10

$13.41

$12.75

$12.07

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Min.: 1
Mult.: 1

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

CPC1788J
IXYS Integrated Circuits
1: $13.97
48In Stock
200Expected 2026/08/21

Mfr. Part No.
CPC1788J

Mouser Part No
849-CPC1788J

IXYS Integrated Circuits

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

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Datasheet

48In Stock

200Expected 2026/08/21

$13.97

$12.46

$11.47

$11.07

View

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers 400V, 1mA AC Solid State Relay

CPC1945G
IXYS Integrated Circuits
1: $4.76
105In Stock

Mfr. Part No.
CPC1945G

Mouser Part No
849-CPC1945G

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V, 1mA AC Solid State Relay

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Datasheet

105In Stock

$4.76

$4.47

$3.79

$3.26

View

Min.: 1
Mult.: 1

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

CPC1963G
IXYS Integrated Circuits
1: $6.28
2In Stock
250Expected 2026/10/26

Mfr. Part No.
CPC1963G

Mouser Part No
849-CPC1963G

IXYS Integrated Circuits

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

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Datasheet

2In Stock

250Expected 2026/10/26

$6.28

$5.48

$5.23

$5.05

View

Min.: 1
Mult.: 1

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

CPC1972G
IXYS Integrated Circuits
1: $1.51
424In Stock

Mfr. Part No.
CPC1972G

Mouser Part No
849-CPC1972G

IXYS Integrated Circuits

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

Learn More

Datasheet

424In Stock

$1.51

$1.26

$1.23

$1.17

View

Min.: 1
Mult.: 1

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

CPC1972GS
IXYS Integrated Circuits
1: $1.51
489In Stock

Mfr. Part No.
CPC1972GS

Mouser Part No
849-CPC1972GS

IXYS Integrated Circuits

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

Learn More

Datasheet

489In Stock

$1.51

$1.26

$1.14

$1.06

View

Min.: 1
Mult.: 1

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

CPC1973Y
IXYS Integrated Circuits
1: $5.30
90In Stock

Mfr. Part No.
CPC1973Y

Mouser Part No
849-CPC1973Y

IXYS Integrated Circuits

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

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Datasheet

90In Stock

$5.30

$4.36

$4.02

$3.79

$3.73

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: $11.82
89In Stock
1,075On Order

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

89In Stock

1,075On Order

$11.82

$10.53

$10.04

$9.70

View

Min.: 1
Mult.: 1

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

CPC1978J
IXYS Integrated Circuits
1: $13.15
65In Stock
150Expected 2026/06/08

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

65In Stock

150Expected 2026/06/08

$13.15

$11.72

$11.18

$10.80

View

Min.: 1
Mult.: 1

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

LAA100L
IXYS Integrated Circuits
1: $5.33
149In Stock

Mfr. Part No.
LAA100L

Mouser Part No
849-LAA100L

IXYS Integrated Circuits

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

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Datasheet

149In Stock

$5.33

$5.04

$4.04

$3.64

View

Min.: 1
Mult.: 1

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

LAA100LSTR
IXYS Integrated Circuits
1: $5.12
1,000In Stock

Mfr. Part No.
LAA100LSTR

Mouser Part No
849-LAA100LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,000In Stock

Cut Tape

$5.12

$4.80

$4.26

$4.07

Reel

$3.42

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA108
IXYS Integrated Circuits
1: $2.76
606In Stock

Mfr. Part No.
LAA108

Mouser Part No
849-LAA108

IXYS Integrated Circuits

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

Learn More

Datasheet

606In Stock

$2.76

$2.47

$2.35

$2.26

View

Min.: 1
Mult.: 1

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

LAA108S
IXYS Integrated Circuits
1: $2.76
304In Stock

Mfr. Part No.
LAA108S

Mouser Part No
849-LAA108S

IXYS Integrated Circuits

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

Learn More

Datasheet

304In Stock

$2.76

$2.27

$2.17

$2.13

View

Min.: 1
Mult.: 1

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

LAA110L
IXYS Integrated Circuits
1: $4.86
96In Stock

Mfr. Part No.
LAA110L

Mouser Part No
849-LAA110L

IXYS Integrated Circuits

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

Learn More

Datasheet

96In Stock

$4.86

$4.33

$4.14

$3.99

View

Min.: 1
Mult.: 1

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

LAA110LS
IXYS Integrated Circuits
1: $4.18
6In Stock

Mfr. Part No.
LAA110LS

Mouser Part No
849-LAA110LS

IXYS Integrated Circuits

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

Learn More

Datasheet

6In Stock

$4.18

$2.95

$2.91

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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