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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

CPC1390GR
IXYS Integrated Circuits
1: $2.26
271Expected 2026/05/19

Mfr. Part No.
CPC1390GR

Mouser Part No
849-CPC1390GR

IXYS Integrated Circuits

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

Datasheet

271Expected 2026/05/19

$2.26

$1.86

$1.77

$1.67

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST i4-PAC 60V

CPC1908J
IXYS Integrated Circuits
1: $11.50
116On Order

Mfr. Part No.
CPC1908J

Mouser Part No
849-CPC1908J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST i4-PAC 60V

Datasheet

116On Order

$11.50

$10.54

$9.68

$9.26

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST 1 Form A

LAA127
IXYS Integrated Circuits
1: $5.73
331On Order

Mfr. Part No.
LAA127

Mouser Part No
849-LAA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST 1 Form A

Datasheet

331On Order

$5.73

$5.26

$4.57

$4.44

View

Min.: 1
Mult.: 1

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

CPC1390GV
IXYS Integrated Circuits
1: $2.33
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1390GV

Mouser Part No
849-CPC1390GV

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$2.33

$2.17

$1.73

$1.54

View

Min.: 1
Mult.: 1

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

CPC1394GV
IXYS Integrated Circuits
500: $1.79
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1394GV

Mouser Part No
849-CPC1394GV

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$1.79

$1.72

$1.69

Min.: 500
Mult.: 100

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

CPC1540G
IXYS Integrated Circuits
500: $2.12
Non-Stocked Lead-Time 34 Weeks

Mfr. Part No.
CPC1540G

Mouser Part No
849-CPC1540G

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 34 Weeks

$2.12

Min.: 500
Mult.: 50

Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay

CPC1561B
IXYS Integrated Circuits
1: $5.61
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1561B

Mouser Part No
849-CPC1561B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay

Datasheet

Non-Stocked Lead-Time 23 Weeks

$5.61

$4.99

$4.77

$4.61

View

Min.: 1
Mult.: 1

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

CPC1563G
IXYS Integrated Circuits
500: $2.34
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1563G

Mouser Part No
849-CPC1563G

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$2.34

$2.30

$2.29

Min.: 500
Mult.: 50

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

CPC1563GS
IXYS Integrated Circuits
1: $3.34
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1563GS

Mouser Part No
849-CPC1563GS

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$3.34

$2.98

$2.85

$2.73

View

Min.: 1
Mult.: 1

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

CPC1563GSTR
IXYS Integrated Circuits
1,000: $2.17
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1563GSTR

Mouser Part No
849-CPC1563GSTR

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$2.17

$2.07

$2.04

Min.: 1,000
Mult.: 1,000

Reel: 1,000

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

CPC1943G
IXYS Integrated Circuits
250: $4.22
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1943G

Mouser Part No
849-CPC1943G

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

Datasheet

Non-Stocked Lead-Time 23 Weeks

$4.22

$4.09

$4.04

$4.00

Quote

Min.: 250
Mult.: 50

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

CPC1943GSTR
IXYS Integrated Circuits
1,000: $3.71
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1943GSTR

Mouser Part No
849-CPC1943GSTR

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$3.71

$3.61

Quote

Min.: 1,000
Mult.: 1,000

Reel: 1,000

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

CPC1961G
IXYS Integrated Circuits
1: $3.54
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1961G

Mouser Part No
849-CPC1961G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

Datasheet

Non-Stocked Lead-Time 23 Weeks

$3.54

$2.97

$2.73

$2.56

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

CPC1961GS
IXYS Integrated Circuits
1: $2.33
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1961GS

Mouser Part No
849-CPC1961GS

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

Datasheet

Non-Stocked Lead-Time 23 Weeks

$2.33

$1.91

$1.84

$1.74

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

CPC1961GSTR
IXYS Integrated Circuits
1,000: $1.29
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1961GSTR

Mouser Part No
849-CPC1961GSTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$1.29

$1.24

$1.22

$1.21

Min.: 1,000
Mult.: 1,000

Reel: 1,000

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

CPC1963GS
IXYS Integrated Circuits
1: $5.33
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1963GS

Mouser Part No
849-CPC1963GS

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$5.33

$4.40

$4.23

$4.05

View

Min.: 1
Mult.: 1

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

CPC1963GSTR
IXYS Integrated Circuits
1,000: $4.23
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
CPC1963GSTR

Mouser Part No
849-CPC1963GSTR

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$4.23

$4.08

Min.: 1,000
Mult.: 1,000

Reel: 1,000

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

LAA100
IXYS Integrated Circuits
1: $5.02
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA100

Mouser Part No
849-LAA100

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$5.02

$4.13

$3.98

$3.78

$3.65

Min.: 1
Mult.: 1

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

LAA100LS
IXYS Integrated Circuits
250: $3.84
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA100LS

Mouser Part No
849-LAA100LS

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$3.84

$3.71

$3.58

$3.52

Min.: 250
Mult.: 50

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

LAA100S
IXYS Integrated Circuits
250: $3.54
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA100S

Mouser Part No
849-LAA100S

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$3.54

$3.45

$3.26

$3.13

Quote

Min.: 250
Mult.: 50

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

LAA100STR
IXYS Integrated Circuits
1,000: $2.81
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA100STR

Mouser Part No
849-LAA100STR

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$2.81

$2.71

Min.: 1,000
Mult.: 1,000

Reel: 1,000

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

LAA120L
IXYS Integrated Circuits
1: $5.31
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA120L

Mouser Part No
849-LAA120L

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$5.31

$3.11

$3.04

$3.00

Min.: 1
Mult.: 1

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

LAA120LS
IXYS Integrated Circuits
1: $5.31
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA120LS

Mouser Part No
849-LAA120LS

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

$5.31

$4.30

$3.65

$3.54

View

Min.: 1
Mult.: 1

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

LAA120LSTR
IXYS Integrated Circuits
1,000: $3.22
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA120LSTR

Mouser Part No
849-LAA120LSTR

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$3.22

Min.: 1,000
Mult.: 1,000

Reel: 1,000

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

LAA120STR
IXYS Integrated Circuits
1,000: $3.12
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
LAA120STR

Mouser Part No
849-LAA120STR

IXYS Integrated Circuits

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

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$3.12

$2.97

Min.: 1,000
Mult.: 1,000

Reel: 1,000