Optocouplers/Photocouplers

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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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Types of Optocouplers/Photocouplers

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Part #

Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay

CPC1008NTR
IXYS Integrated Circuits
1: 28,30 kr
39 110In Stock
92 000On Order

Mfr. Part No.
CPC1008NTR

Mouser Part No
849-CPC1008NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay

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Datasheet

39 110In Stock

92 000On Order

Cut Tape

28,30 kr

26,71 kr

Reel

26,71 kr

MouseReel Available

Min.: 1
Mult.: 1

: 2 000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 250V, 1-Form-A SSR

CPC1010NTR
IXYS Integrated Circuits
1: 35,62 kr
13 735In Stock

Mfr. Part No.
CPC1010NTR

Mouser Part No
849-CPC1010NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 250V, 1-Form-A SSR

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Datasheet

13 735In Stock

Cut Tape

35,62 kr

31,69 kr

30,32 kr

29,04 kr

View

Reel

24,91 kr

MouseReel Available

Min.: 1
Mult.: 1

: 2 000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay

CPC1016NTR
IXYS Integrated Circuits
1: 27,67 kr
22 193In Stock

Mfr. Part No.
CPC1016NTR

Mouser Part No
849-CPC1016NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay

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Datasheet

22 193In Stock

Cut Tape

27,67 kr

24,70 kr

23,53 kr

22,68 kr

Reel

19,40 kr

View

MouseReel Available

Min.: 1
Mult.: 1

: 2 000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay

CPC1020NTR
IXYS Integrated Circuits
1: 58,51 kr
25 935In Stock
57 201On Order

Mfr. Part No.
CPC1020NTR

Mouser Part No
849-CPC1020NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay

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Datasheet

25 935In Stock

57 201On Order

Cut Tape

58,51 kr

54,80 kr

48,76 kr

46,32 kr

View

Reel

38,48 kr

MouseReel Available

Min.: 1
Mult.: 1

: 2 000

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

CPC1025N
IXYS Integrated Circuits
1: 26,18 kr
7 469In Stock
400Expected 2027-01-06

Mfr. Part No.
CPC1025N

Mouser Part No
849-CPC1025N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

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Datasheet

7 469In Stock

400Expected 2027-01-06

26,18 kr

23,96 kr

22,47 kr

21,84 kr

View

Min.: 1
Mult.: 1

PCB Mount

SOP-4

MOSFET

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

CPC1025NTR
IXYS Integrated Circuits
1: 28,94 kr
122 006In Stock

Mfr. Part No.
CPC1025NTR

Mouser Part No
849-CPC1025NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay

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Datasheet

122 006In Stock

Cut Tape

28,94 kr

26,82 kr

24,49 kr

23,74 kr

Reel

19,82 kr

View

MouseReel Available

Min.: 1
Mult.: 1

: 2 000

PCB Mount

SOP-4

MOSFET

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

CPC1330GRTR
IXYS Integrated Circuits
1: 33,18 kr
11 831In Stock

Mfr. Part No.
CPC1330GRTR

Mouser Part No
849-CPC1330GRTR

IXYS Integrated Circuits

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

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Datasheet

11 831In Stock

Cut Tape

33,18 kr

29,68 kr

28,30 kr

27,03 kr

Reel

23,21 kr

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-4

MOSFET

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

CPC1560GS
IXYS Integrated Circuits
1: 76,32 kr
5 014In Stock

Mfr. Part No.
CPC1560GS

Mouser Part No
849-CPC1560GS

IXYS Integrated Circuits

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

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Datasheet

5 014In Stock

76,32 kr

71,55 kr

63,60 kr

60,31 kr

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

CPC1706Y
IXYS Integrated Circuits
1: 66,99 kr
7 813In Stock

Mfr. Part No.
CPC1706Y

Mouser Part No
849-CPC1706Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation

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Datasheet

7 813In Stock

66,99 kr

59,68 kr

56,50 kr

54,17 kr

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

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

CPC1709J
IXYS Integrated Circuits
1: 162,29 kr
2 162In Stock
1 350Expected 2027-02-15

Mfr. Part No.
CPC1709J

Mouser Part No
849-CPC1709J

IXYS Integrated Circuits

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

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Datasheet

2 162In Stock

1 350Expected 2027-02-15

162,29 kr

144,58 kr

133,14 kr

128,15 kr

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

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

CPC1718J
IXYS Integrated Circuits
1: 172,36 kr
1 555In Stock

Mfr. Part No.
CPC1718J

Mouser Part No
849-CPC1718J

IXYS Integrated Circuits

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

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Datasheet

1 555In Stock

172,36 kr

153,59 kr

146,60 kr

141,62 kr

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

CPC1907B
IXYS Integrated Circuits
1: 108,33 kr
6 720In Stock
12 100On Order

Mfr. Part No.
CPC1907B

Mouser Part No
849-CPC1907B

IXYS Integrated Circuits

Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay

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Datasheet

6 720In Stock

12 100On Order

108,33 kr

96,57 kr

92,11 kr

88,93 kr

View

Min.: 1
Mult.: 1

PCB Mount

SOIC-8

MOSFET

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

CPC1918J
IXYS Integrated Circuits
1: 202,88 kr
7 453In Stock
7 550Expected 2027-01-25

Mfr. Part No.
CPC1918J

Mouser Part No
849-CPC1918J

IXYS Integrated Circuits

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

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Datasheet

7 453In Stock

7 550Expected 2027-01-25

202,88 kr

181,37 kr

173,10 kr

166,63 kr

View

Min.: 1
Mult.: 1

PCB Mount

ISOPLUS264

MOSFET

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

CPC1966YX6
IXYS Integrated Circuits
1: 126,99 kr
2 168In Stock

Mfr. Part No.
CPC1966YX6

Mouser Part No
849-CPC1966YX6

IXYS Integrated Circuits

Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out

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Datasheet

2 168In Stock

126,99 kr

113,10 kr

107,91 kr

103,77 kr

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

SCR

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

CPC1981Y
IXYS Integrated Circuits
1: 66,14 kr
2 868In Stock

Mfr. Part No.
CPC1981Y

Mouser Part No
849-CPC1981Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay

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Datasheet

2 868In Stock

66,14 kr

64,24 kr

61,27 kr

59,15 kr

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP

CPC1984Y
IXYS Integrated Circuits
1: 158,05 kr
4 012In Stock
1 600Expected 2027-01-13

Mfr. Part No.
CPC1984Y

Mouser Part No
849-CPC1984Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP

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Datasheet

4 012In Stock

1 600Expected 2027-01-13

158,05 kr

140,87 kr

134,51 kr

129,85 kr

View

Min.: 1
Mult.: 1

PCB Mount

SIP-4

MOSFET

Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay

CPC1988J
IXYS Integrated Circuits
1: 398,24 kr
608In Stock

Mfr. Part No.
CPC1988J

Mouser Part No
849-CPC1988J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay

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Datasheet

608In Stock

398,24 kr

378,42 kr

358,49 kr

338,56 kr

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

MOSFET

Solid State Relays - PCB Mount SP AC Solid State Power Switch

CPC1998J
IXYS Integrated Circuits
1: 198,33 kr
4 557In Stock
2 725Expected 2026-09-21

Mfr. Part No.
CPC1998J

Mouser Part No
849-CPC1998J

IXYS Integrated Circuits

Solid State Relays - PCB Mount SP AC Solid State Power Switch

Learn More

Datasheet

4 557In Stock

2 725Expected 2026-09-21

198,33 kr

180,09 kr

171,51 kr

163,98 kr

View

Min.: 1
Mult.: 1

PCB Mount

i4-PAC

SCR

Solid State Relays - PCB Mount 120MA DPST 8-DIP

LAA110
IXYS Integrated Circuits
1: 75,05 kr
2 725In Stock
4 700On Order

Mfr. Part No.
LAA110

Mouser Part No
849-LAA110

IXYS Integrated Circuits

Solid State Relays - PCB Mount 120MA DPST 8-DIP

Learn More

Datasheet

2 725In Stock

4 700On Order

75,05 kr

68,58 kr

63,60 kr

58,72 kr

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA110S
IXYS Integrated Circuits
1: 83,74 kr
2 373In Stock
100Expected 2027-01-13

Mfr. Part No.
LAA110S

Mouser Part No
849-LAA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

2 373In Stock

100Expected 2027-01-13

83,74 kr

74,62 kr

71,34 kr

68,69 kr

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA110STR
IXYS Integrated Circuits
1: 80,03 kr
11 799In Stock

Mfr. Part No.
LAA110STR

Mouser Part No
849-LAA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

11 799In Stock

Cut Tape

80,03 kr

71,34 kr

68,05 kr

65,83 kr

View

Reel

53,21 kr

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-8

MOSFET

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

LAA710S
IXYS Integrated Circuits
1: 188,68 kr
5 036In Stock

Mfr. Part No.
LAA710S

Mouser Part No
849-LAA710S

IXYS Integrated Circuits

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

Learn More

Datasheet

5 036In Stock

188,68 kr

167,69 kr

159,32 kr

150,94 kr

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LCA110STR
IXYS Integrated Circuits
1: 37,10 kr
13 156In Stock
4 000Expected 2026-10-02

Mfr. Part No.
LCA110STR

Mouser Part No
849-LCA110STR

IXYS Integrated Circuits

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

Learn More

Datasheet

13 156In Stock

4 000Expected 2026-10-02

Cut Tape

37,10 kr

33,07 kr

31,59 kr

30,32 kr

Reel

25,55 kr

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA182STR
IXYS Integrated Circuits
1: 45,37 kr
5 435In Stock

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

5 435In Stock

Cut Tape

45,37 kr

40,49 kr

38,69 kr

37,42 kr

Reel

31,69 kr

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

PCB Mount

SMD DIP-6

MOSFET

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

LCA701S
IXYS Integrated Circuits
1: 94,02 kr
7 431In Stock

Mfr. Part No.
LCA701S

Mouser Part No
849-LCA701S

IXYS Integrated Circuits

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

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Datasheet

7 431In Stock

94,02 kr

83,74 kr

79,92 kr

76,00 kr

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

OptoMOS 1-Form-A (SPST-NO) Solid State Relays

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