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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 350V 120mA Dual Single-Pole

LAA110LSTR
IXYS Integrated Circuits
1: $10.39
698In Stock

Mfr. Part No.
LAA110LSTR

Mouser Part No
849-LAA110LSTR

IXYS Integrated Circuits

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

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Datasheet

698In Stock

Cut Tape

$10.39

$9.86

$9.63

$9.48

Reel

$7.82

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA120STR
IXYS Integrated Circuits
1: $6.98
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

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Datasheet

2,596In Stock

Cut Tape

$6.98

$6.57

$6.42

$6.31

Reel

$5.06

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR

PAA110S
IXYS Integrated Circuits
1: $18.67
241In Stock

Mfr. Part No.
PAA110S

Mouser Part No
849-PAA110S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR

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Datasheet

241In Stock

$18.67

$16.63

$15.88

$13.07

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Min.: 1
Mult.: 1

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

PAA150S
IXYS Integrated Circuits
1: $18.94
317In Stock

Mfr. Part No.
PAA150S

Mouser Part No
849-PAA150S

IXYS Integrated Circuits

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

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Datasheet

317In Stock

$18.94

$16.88

$16.12

$15.52

$11.57

Min.: 1
Mult.: 1

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

CPC1330G
IXYS Integrated Circuits
1: $5.32
439In Stock
100Expected 2/12/2026

Mfr. Part No.
CPC1330G

Mouser Part No
849-CPC1330G

IXYS Integrated Circuits

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

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Datasheet

439In Stock

100Expected 2/12/2026

$5.32

$4.99

$4.49

$3.79

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount RELAY, SS ICS

CPC1561BTR
IXYS Integrated Circuits
1: $15.44
3In Stock
1,000Expected 9/10/2026

Mfr. Part No.
CPC1561BTR

Mouser Part No
849-CPC1561BTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY, SS ICS

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Datasheet

3In Stock

1,000Expected 9/10/2026

Cut Tape

$15.44

$12.78

$11.86

$11.49

View

Reel

$9.85

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA108S
IXYS Integrated Circuits
1: $7.24
274In Stock

Mfr. Part No.
LAA108S

Mouser Part No
849-LAA108S

IXYS Integrated Circuits

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

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Datasheet

274In Stock

$7.24

$6.46

$6.16

$5.94

View

Min.: 1
Mult.: 1

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

PLA143S
IXYS Integrated Circuits
1: $7.92
244In Stock

Mfr. Part No.
PLA143S

Mouser Part No
849-PLA143S

IXYS Integrated Circuits

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

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Datasheet

244In Stock

$7.92

$7.36

$7.14

$6.94

View

Min.: 1
Mult.: 1

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

PLA160
IXYS Integrated Circuits
1: $11.76
213In Stock

Mfr. Part No.
PLA160

Mouser Part No
849-PLA160

IXYS Integrated Circuits

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

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Datasheet

213In Stock

$11.76

$10.49

$10.01

$9.66

View

Min.: 1
Mult.: 1

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

PAA191
IXYS Integrated Circuits
1: $19.86
96In Stock

Mfr. Part No.
PAA191

Mouser Part No
849-PAA191

IXYS Integrated Circuits

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

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Datasheet

96In Stock

$19.86

$17.69

$16.89

$16.32

View

Min.: 1
Mult.: 1

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

PLA143STR
IXYS Integrated Circuits
1: $7.22
318In Stock

Mfr. Part No.
PLA143STR

Mouser Part No
849-PLA143STR

IXYS Integrated Circuits

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

Learn More

Datasheet

318In Stock

Cut Tape

$7.22

$7.18

$7.11

$7.09

Reel

$6.11

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

CPC1972G
IXYS Integrated Circuits
1: $3.98
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

$3.98

$2.72

$2.68

$2.61

$2.58

Min.: 1
Mult.: 1

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

LAA100L
IXYS Integrated Circuits
1: $14.61
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

$14.61

$13.70

$12.88

$10.93

$10.01

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

OMA160
IXYS Integrated Circuits
1: $9.04
234In Stock

Mfr. Part No.
OMA160

Mouser Part No
849-OMA160

IXYS Integrated Circuits

Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay

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Datasheet

234In Stock

$9.04

$6.65

$6.42

$6.12

View

Min.: 1
Mult.: 1

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

PLA172P
IXYS Integrated Circuits
1: $13.80
122In Stock

Mfr. Part No.
PLA172P

Mouser Part No
849-PLA172P

IXYS Integrated Circuits

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

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Datasheet

122In Stock

$13.80

$12.29

$11.75

$11.10

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

LAA125S
IXYS Integrated Circuits
1: $9.57
152In Stock

Mfr. Part No.
LAA125S

Mouser Part No
849-LAA125S

IXYS Integrated Circuits

Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole

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Datasheet

152In Stock

$9.57

$8.95

$8.70

$8.69

$8.61

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

LCA125
IXYS Integrated Circuits
1: $8.04
160In Stock

Mfr. Part No.
LCA125

Mouser Part No
849-LCA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD

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Datasheet

160In Stock

$8.04

$7.47

$6.98

$6.73

$6.46

Min.: 1
Mult.: 1

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

CPC1972GS
IXYS Integrated Circuits
1: $3.98
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

$3.98

$3.28

$3.01

$2.64

View

Min.: 1
Mult.: 1

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

PLA193S
IXYS Integrated Circuits
1: $8.74
294In Stock

Mfr. Part No.
PLA193S

Mouser Part No
849-PLA193S

IXYS Integrated Circuits

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

Learn More

Datasheet

294In Stock

$8.74

$7.78

$7.44

$7.18

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP

CPC1006NTR
IXYS Integrated Circuits
1: $3.13
37,807In Stock

Mfr. Part No.
CPC1006NTR

Mouser Part No
849-CPC1006NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP

Learn More

Datasheet

37,807In Stock

Cut Tape

$3.13

$2.80

$2.67

$2.57

Reel

$2.07

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay

CPC1014NTR
IXYS Integrated Circuits
1: $4.12
37,829In Stock
38,000Expected 23/10/2026

Mfr. Part No.
CPC1014NTR

Mouser Part No
849-CPC1014NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay

Learn More

Datasheet

37,829In Stock

38,000Expected 23/10/2026

Cut Tape

$4.12

$3.69

$3.50

$3.39

Reel

$2.72

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Solid State Relays - PCB Mount SPNO RELAY

CPC1017N
IXYS Integrated Circuits
1: $1.17
300,353In Stock

Mfr. Part No.
CPC1017N

Mouser Part No
849-CPC1017N

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPNO RELAY

Learn More

Datasheet

300,353In Stock

$1.17

$1.05

$1.01

$0.804

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay

CPC1017NTR
IXYS Integrated Circuits
1: $2.62
60,108In Stock
68,000Expected 19/10/2026

Mfr. Part No.
CPC1017NTR

Mouser Part No
849-CPC1017NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay

Learn More

Datasheet

60,108In Stock

68,000Expected 19/10/2026

Cut Tape

$2.62

$2.35

$2.24

$2.16

Reel

$1.74

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

CPC1018NTR
IXYS Integrated Circuits
1: $6.69
32,346In Stock

Mfr. Part No.
CPC1018NTR

Mouser Part No
849-CPC1018NTR

IXYS Integrated Circuits

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

Learn More

Datasheet

32,346In Stock

Cut Tape

$6.69

$5.96

$5.70

$5.49

View

Reel

$4.56

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

CPC1019N
IXYS Integrated Circuits
1: $5.34
9,082In Stock

Mfr. Part No.
CPC1019N

Mouser Part No
849-CPC1019N

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay

Learn More

Datasheet

9,082In Stock

$5.34

$5.24

$4.90

$4.69

View

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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