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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 DC Only Single Pole i4-PAC

CPC1727J
IXYS Integrated Circuits
1: £15.09
370In Stock

Mfr. Part No.
CPC1727J

Mouser Part No
849-CPC1727J

IXYS Integrated Circuits

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

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Datasheet

370In Stock

£15.09

£13.95

£13.42

£12.92

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Min.: 1
Mult.: 1

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

CPC1788J
IXYS Integrated Circuits
1: £20.16
197In Stock

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

197In Stock

£20.16

£18.40

£17.56

£16.78

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Min.: 1
Mult.: 1

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

CPC1906Y
IXYS Integrated Circuits
1: £9.78
251In Stock

Mfr. Part No.
CPC1906Y

Mouser Part No
849-CPC1906Y

IXYS Integrated Circuits

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

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Datasheet

251In Stock

£9.78

£8.70

£8.25

£7.87

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay

CPC1916Y
IXYS Integrated Circuits
1: £9.22
292In Stock
1,400On Order

Mfr. Part No.
CPC1916Y

Mouser Part No
849-CPC1916Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay

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Datasheet

292In Stock

1,400On Order

£9.22

£8.88

£8.47

£8.18

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

CPC1927J
IXYS Integrated Circuits
1: £23.88
238In Stock

Mfr. Part No.
CPC1927J

Mouser Part No
849-CPC1927J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP, NO ISOPLUS-264

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Datasheet

238In Stock

£23.88

£21.44

£20.46

£19.76

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Min.: 1
Mult.: 1

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

CPC1963G
IXYS Integrated Circuits
1: £9.46
202In Stock

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

202In Stock

£9.46

£8.28

£7.91

£7.64

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 8-Pin Power SOIC

CPC1966B
IXYS Integrated Circuits
1: £7.38
1,481In Stock
1,075Expected 18/12/2026

Mfr. Part No.
CPC1966B

Mouser Part No
849-CPC1966B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8-Pin Power SOIC

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Datasheet

1,481In Stock

1,075Expected 18/12/2026

£7.38

£6.57

£6.27

£6.05

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

CPC1968J
IXYS Integrated Circuits
1: £33.39
301In Stock
1,050On Order

Mfr. Part No.
CPC1968J

Mouser Part No
849-CPC1968J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay

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Datasheet

301In Stock

1,050On Order

£33.39

£29.74

£28.40

£27.91

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Min.: 1
Mult.: 1

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

CPC1972GSTR
IXYS Integrated Circuits
1: £2.10
3,684In Stock

Mfr. Part No.
CPC1972GSTR

Mouser Part No
849-CPC1972GSTR

IXYS Integrated Circuits

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

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Datasheet

3,684In Stock

Cut Tape

£2.10

£1.73

£1.58

£1.40

Reel

£1.32

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MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

CPC1976Y
IXYS Integrated Circuits
1: £5.20
2,084In Stock
5,975On Order

Mfr. Part No.
CPC1976Y

Mouser Part No
849-CPC1976Y

IXYS Integrated Circuits

Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay

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Datasheet

2,084In Stock

5,975On Order

£5.20

£4.11

£3.66

Min.: 1
Mult.: 1

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

CPC1976YX6
IXYS Integrated Circuits
1: £7.51
356In Stock

Mfr. Part No.
CPC1976YX6

Mouser Part No
849-CPC1976YX6

IXYS Integrated Circuits

Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out

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Datasheet

356In Stock

£7.51

£6.17

£5.27

£4.80

£4.78

Min.: 1
Mult.: 1

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

CPC1977J
IXYS Integrated Circuits
1: £17.49
808In Stock
425Expected 02/10/2026

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

808In Stock

425Expected 02/10/2026

£17.49

£15.67

£14.88

£14.36

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Min.: 1
Mult.: 1

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

LAA108
IXYS Integrated Circuits
1: £4.00
581In Stock

Mfr. Part No.
LAA108

Mouser Part No
849-LAA108

IXYS Integrated Circuits

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

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Datasheet

581In Stock

£4.00

£3.57

£3.40

£3.28

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Min.: 1
Mult.: 1

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

LAA108STR
IXYS Integrated Circuits
1: £3.82
2,673In Stock
2,000Expected 12/02/2027

Mfr. Part No.
LAA108STR

Mouser Part No
849-LAA108STR

IXYS Integrated Circuits

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

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Datasheet

2,673In Stock

2,000Expected 12/02/2027

Cut Tape

£3.82

£3.40

£3.25

£3.13

Reel

£2.67

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MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount SPST 1 Form A

LAA127
IXYS Integrated Circuits
1: £9.09
611In Stock

Mfr. Part No.
LAA127

Mouser Part No
849-LAA127

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST 1 Form A

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Datasheet

611In Stock

£9.09

£8.10

£7.73

£7.46

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Min.: 1
Mult.: 1

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

LAA710
IXYS Integrated Circuits
1: £15.55
748In Stock

Mfr. Part No.
LAA710

Mouser Part No
849-LAA710

IXYS Integrated Circuits

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

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Datasheet

748In Stock

£15.55

£13.82

£13.13

£12.43

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole

LAA710STR
IXYS Integrated Circuits
1: £13.87
126In Stock
3,000On Order

Mfr. Part No.
LAA710STR

Mouser Part No
849-LAA710STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole

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Datasheet

126In Stock

3,000On Order

Cut Tape

£13.87

£12.36

£11.80

£11.39

View

Reel

£9.79

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA110
IXYS Integrated Circuits
1: £2.94
4,801In Stock
17,250On Order

Mfr. Part No.
LCA110

Mouser Part No
849-LCA110

IXYS Integrated Circuits

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

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Datasheet

4,801In Stock

17,250On Order

£2.94

£2.61

£2.43

£2.13

£2.12

Min.: 1
Mult.: 1

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

LCA110L
IXYS Integrated Circuits
1: £3.06
1,006In Stock
400Expected 13/08/2026

Mfr. Part No.
LCA110L

Mouser Part No
849-LCA110L

IXYS Integrated Circuits

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

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Datasheet

1,006In Stock

400Expected 13/08/2026

£3.06

£2.86

£2.76

£2.65

View

Min.: 1
Mult.: 1

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

LCA110S
IXYS Integrated Circuits
1: £3.20
5,229In Stock

Mfr. Part No.
LCA110S

Mouser Part No
849-LCA110S

IXYS Integrated Circuits

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

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Datasheet

5,229In Stock

£3.20

£2.85

£2.72

£2.61

View

Min.: 1
Mult.: 1

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

LCA120
IXYS Integrated Circuits
1: £4.66
3,671In Stock

Mfr. Part No.
LCA120

Mouser Part No
849-LCA120

IXYS Integrated Circuits

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

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Datasheet

3,671In Stock

£4.66

£4.16

£3.97

£3.91

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Min.: 1
Mult.: 1

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

LCA120STR
IXYS Integrated Circuits
1: £4.20
2,596In Stock

Mfr. Part No.
LCA120STR

Mouser Part No
849-LCA120STR

IXYS Integrated Circuits

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

Learn More

Datasheet

2,596In Stock

Cut Tape

£4.20

£3.94

£3.71

£3.60

Reel

£2.94

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA127STR
IXYS Integrated Circuits
1: £5.19
1,429In Stock

Mfr. Part No.
LCA127STR

Mouser Part No
849-LCA127STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,429In Stock

Cut Tape

£5.19

£4.64

£4.43

£4.27

Reel

£3.63

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA182S
IXYS Integrated Circuits
1: £3.88
836In Stock

Mfr. Part No.
LCA182S

Mouser Part No
849-LCA182S

IXYS Integrated Circuits

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

Learn More

Datasheet

836In Stock

£3.88

£3.46

£3.30

£3.18

View

Min.: 1
Mult.: 1

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

LCA182STR
IXYS Integrated Circuits
1: £3.74
3,435In Stock
2,000Expected 13/08/2026

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

3,435In Stock

2,000Expected 13/08/2026

Cut Tape

£3.74

£3.33

£3.19

£3.08

Reel

£2.61

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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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