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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.

All Results (297)

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Part #

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

PAA132S
IXYS Integrated Circuits
1: $15.96
1,281In Stock

Mfr. Part #
PAA132S

Mouser Part #
849-PAA132S

IXYS Integrated Circuits

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

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Datasheet

1,281In Stock

$15.96

$14.22

$13.58

$13.10

View

Min.: 1
Mult.: 1

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

PAA132STR
IXYS Integrated Circuits
1: $16.07
1,204In Stock

Mfr. Part #
PAA132STR

Mouser Part #
849-PAA132STR

IXYS Integrated Circuits

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

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Datasheet

1,204In Stock

Cut Tape

$16.07

$14.29

$13.57

$12.86

View

Reel

$11.00

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PAA150S
IXYS Integrated Circuits
1: $14.55
267In Stock

Mfr. Part #
PAA150S

Mouser Part #
849-PAA150S

IXYS Integrated Circuits

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

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Datasheet

267In Stock

$14.55

$12.93

$12.29

$11.64

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Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA

PLA110STR
IXYS Integrated Circuits
1: $7.75
646In Stock
3,000On Order

Mfr. Part #
PLA110STR

Mouser Part #
849-PLA110STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA

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Datasheet

646In Stock

3,000On Order

Cut Tape

$7.75

$7.26

$6.46

$5.86

Reel

$4.85

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

PLA140LSTR
IXYS Integrated Circuits
1: $9.88
1,999In Stock

Mfr. Part #
PLA140LSTR

Mouser Part #
849-PLA140LSTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

Learn More

Datasheet

1,999In Stock

Cut Tape

$9.88

$9.26

$8.23

$7.82

View

Reel

$6.55

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

PLA150STR
IXYS Integrated Circuits
1: $8.37
1,589In Stock

Mfr. Part #
PLA150STR

Mouser Part #
849-PLA150STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA

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Datasheet

1,589In Stock

Cut Tape

$8.37

$7.46

$7.12

$6.88

Reel

$6.03

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

PLA160STR
IXYS Integrated Circuits
1: $8.26
844In Stock

Mfr. Part #
PLA160STR

Mouser Part #
849-PLA160STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA

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Datasheet

844In Stock

Cut Tape

$8.26

$7.37

$7.04

$6.79

View

Reel

$5.78

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

PLA170
IXYS Integrated Circuits
1: $6.70
820In Stock

Mfr. Part #
PLA170

Mouser Part #
849-PLA170

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA

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Datasheet

820In Stock

$6.70

$5.97

$5.71

$5.50

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR

PLA171P
IXYS Integrated Circuits
1: $6.94
1,213In Stock

Mfr. Part #
PLA171P

Mouser Part #
849-PLA171P

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR

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Datasheet

1,213In Stock

$6.94

$6.36

$6.31

$6.08

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

PLA172PTR
IXYS Integrated Circuits
1: $9.69
429In Stock

Mfr. Part #
PLA172PTR

Mouser Part #
849-PLA172PTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay

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Datasheet

429In Stock

Cut Tape

$9.69

$8.64

$8.25

$7.97

View

Reel

$6.77

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

PLA191S
IXYS Integrated Circuits
1: $9.51
731In Stock

Mfr. Part #
PLA191S

Mouser Part #
849-PLA191S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA

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Datasheet

731In Stock

$9.51

$8.47

$8.09

$7.81

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA

PLA192STR
IXYS Integrated Circuits
1: $6.77
1,981In Stock

Mfr. Part #
PLA192STR

Mouser Part #
849-PLA192STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA

Learn More

Datasheet

1,981In Stock

Cut Tape

$6.77

$6.03

$5.76

$5.56

Reel

$4.75

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

PLA193STR
IXYS Integrated Circuits
1: $6.14
1,719In Stock
2,000Expected 11/18/2026

Mfr. Part #
PLA193STR

Mouser Part #
849-PLA193STR

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA

Learn More

Datasheet

1,719In Stock

2,000Expected 11/18/2026

Cut Tape

$6.14

$5.47

$5.23

$5.05

Reel

$4.43

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount RELAY, SS ICS

CPC1511Y
IXYS Integrated Circuits
1: $11.64
38In Stock

Mfr. Part #
CPC1511Y

Mouser Part #
576-CPC1511Y

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY, SS ICS

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Datasheet

38In Stock

$11.64

$10.91

$9.69

$9.21

View

Min.: 1
Mult.: 1

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

CPC1225N
IXYS Integrated Circuits
1: $3.70
3In Stock
800Expected 11/25/2026

Mfr. Part #
CPC1225N

Mouser Part #
849-CPC1225N

IXYS Integrated Circuits

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

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Datasheet

3In Stock

800Expected 11/25/2026

$3.70

$3.30

$3.15

$3.02

View

Min.: 1
Mult.: 1

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

CPC1225NTR
IXYS Integrated Circuits
1: $3.53
3,579Expected 2/24/2027

Mfr. Part #
CPC1225NTR

Mouser Part #
849-CPC1225NTR

IXYS Integrated Circuits

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

Learn More

Datasheet

3,579Expected 2/24/2027

Cut Tape

$3.53

$3.15

$3.01

$2.89

View

Reel

$2.47

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

CPC1390GRTR
IXYS Integrated Circuits
1: $4.16
562In Stock
11,000Expected 10/14/2026

Mfr. Part #
CPC1390GRTR

Mouser Part #
849-CPC1390GRTR

IXYS Integrated Circuits

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

Learn More

Datasheet

562In Stock

11,000Expected 10/14/2026

Cut Tape

$4.16

$3.72

$3.55

$3.41

Reel

$2.92

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1394GR
IXYS Integrated Circuits
1: $4.50
137In Stock
600On Order

Mfr. Part #
CPC1394GR

Mouser Part #
849-CPC1394GR

IXYS Integrated Circuits

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

Learn More

Datasheet

137In Stock

600On Order

$4.50

$4.15

$3.85

$3.64

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

CPC1510G
IXYS Integrated Circuits
1: $6.81
268In Stock

Mfr. Part #
CPC1510G

Mouser Part #
849-CPC1510G

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay

Learn More

Datasheet

268In Stock

$6.81

$6.07

$5.80

$5.59

View

Min.: 1
Mult.: 1

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

CPC1540GS
IXYS Integrated Circuits
1: $6.19
22In Stock
2,950On Order

Mfr. Part #
CPC1540GS

Mouser Part #
849-CPC1540GS

IXYS Integrated Circuits

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

Learn More

Datasheet

22In Stock

2,950On Order

$6.19

$5.80

$5.16

$4.92

View

Min.: 1
Mult.: 1

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

CPC1540GSTR
IXYS Integrated Circuits
1: $5.90
9In Stock

Mfr. Part #
CPC1540GSTR

Mouser Part #
849-CPC1540GSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

9In Stock

Cut Tape

$5.90

$4.99

$4.77

$4.60

Reel

$3.77

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: $7.86
31In Stock

Mfr. Part #
CPC1560GSTR

Mouser Part #
849-CPC1560GSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

31In Stock

Cut Tape

$7.86

$7.19

$6.65

$6.34

View

Reel

$5.27

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1786J
IXYS Integrated Circuits
1: $27.54
43In Stock
75Expected 9/25/2026

Mfr. Part #
CPC1786J

Mouser Part #
849-CPC1786J

IXYS Integrated Circuits

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

Learn More

Datasheet

43In Stock

75Expected 9/25/2026

$27.54

$25.01

$23.78

$22.62

Min.: 1
Mult.: 1

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

CPC1945G
IXYS Integrated Circuits
1: $9.48
105In Stock

Mfr. Part #
CPC1945G

Mouser Part #
849-CPC1945G

IXYS Integrated Circuits

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

Learn More

Datasheet

105In Stock

$9.48

$7.06

$6.17

$5.25

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay

CPC1967J
IXYS Integrated Circuits
1: $40.88
6In Stock
400On Order

Mfr. Part #
CPC1967J

Mouser Part #
849-CPC1967J

IXYS Integrated Circuits

Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay

Learn More

Datasheet

6In Stock

400On Order

$40.88

$36.22

$34.49

$32.91

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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