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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 1-Form-A SSR 4-Pin SOP

CPC1006N
IXYS Integrated Circuits
1: $1.80
165,126In Stock

Mfr. Part #
CPC1006N

Mouser Part #
849-CPC1006N

IXYS Integrated Circuits

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

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Datasheet

165,126In Stock

$1.80

$1.60

$1.53

$1.48

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Min.: 1
Mult.: 1

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

CPC1014N
IXYS Integrated Circuits
1: $4.58
233,133In Stock

Mfr. Part #
CPC1014N

Mouser Part #
849-CPC1014N

IXYS Integrated Circuits

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

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Datasheet

233,133In Stock

$4.58

$2.69

$2.65

$2.64

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount SPST NO Relay

CPC1018N
IXYS Integrated Circuits
1: $7.42
46,633In Stock

Mfr. Part #
CPC1018N

Mouser Part #
849-CPC1018N

IXYS Integrated Circuits

Solid State Relays - PCB Mount SPST NO Relay

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Datasheet

46,633In Stock

$7.42

$5.18

$5.10

$5.01

View

Min.: 1
Mult.: 1

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

CPC1510GSTR
IXYS Integrated Circuits
1: $8.31
10,810In Stock
1,600Expected 2026-07-20

Mfr. Part #
CPC1510GSTR

Mouser Part #
849-CPC1510GSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

10,810In Stock

1,600Expected 2026-07-20

Cut Tape

$8.31

$7.83

$7.47

$7.33

Reel

$5.95

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

PAA191S
IXYS Integrated Circuits
1: $21.18
2,034In Stock

Mfr. Part #
PAA191S

Mouser Part #
849-PAA191S

IXYS Integrated Circuits

Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR

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Datasheet

2,034In Stock

$21.18

$18.86

$18.00

$17.32

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Min.: 1
Mult.: 1

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

CPC1008N
IXYS Integrated Circuits
1: $4.28
78,152In Stock

Mfr. Part #
CPC1008N

Mouser Part #
849-CPC1008N

IXYS Integrated Circuits

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

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Datasheet

78,152In Stock

$4.28

$3.93

$3.66

$3.54

View

Min.: 1
Mult.: 1

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

CPC1035N
IXYS Integrated Circuits
1: $5.04
28,731In Stock

Mfr. Part #
CPC1035N

Mouser Part #
849-CPC1035N

IXYS Integrated Circuits

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

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Datasheet

28,731In Stock

$5.04

$3.80

$3.63

$3.53

View

Min.: 1
Mult.: 1

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

CPC1988J
IXYS Integrated Circuits
1: $45.96
708In Stock

Mfr. Part #
CPC1988J

Mouser Part #
849-CPC1988J

IXYS Integrated Circuits

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

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Datasheet

708In Stock

$45.96

$42.81

$41.40

$40.29

View

Min.: 1
Mult.: 1

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

LAA710S
IXYS Integrated Circuits
1: $21.99
5,579In Stock

Mfr. Part #
LAA710S

Mouser Part #
849-LAA710S

IXYS Integrated Circuits

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

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Datasheet

5,579In Stock

$21.99

$20.69

$20.22

$19.38

View

Min.: 1
Mult.: 1

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

PAA140
IXYS Integrated Circuits
1: $16.80
2,023In Stock

Mfr. Part #
PAA140

Mouser Part #
849-PAA140

IXYS Integrated Circuits

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

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Datasheet

2,023In Stock

$16.80

$15.85

$15.49

$14.70

View

Min.: 1
Mult.: 1

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

CPC1986J
IXYS Integrated Circuits
1: $53.28
160In Stock

Mfr. Part #
CPC1986J

Mouser Part #
849-CPC1986J

IXYS Integrated Circuits

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

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Datasheet

160In Stock

$53.28

$47.66

$45.59

$44.02

View

Min.: 1
Mult.: 1

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

PLA171PTR
IXYS Integrated Circuits
1: $8.86
966In Stock

Mfr. Part #
PLA171PTR

Mouser Part #
849-PLA171PTR

IXYS Integrated Circuits

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

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Datasheet

966In Stock

Cut Tape

$8.86

$8.28

$8.08

$7.92

Reel

$7.16

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LAA127STR
IXYS Integrated Circuits
1: $16.65
1,129In Stock

Mfr. Part #
LAA127STR

Mouser Part #
849-LAA127STR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,129In Stock

Cut Tape

$16.65

$14.83

$14.16

$13.67

View

Reel

$10.73

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

PLA150
IXYS Integrated Circuits
1: $12.53
1,235In Stock

Mfr. Part #
PLA150

Mouser Part #
849-PLA150

IXYS Integrated Circuits

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

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Datasheet

1,235In Stock

$12.53

$11.17

$10.67

$8.57

View

Min.: 1
Mult.: 1

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

PLA171P
IXYS Integrated Circuits
1: $7.65
1,545In 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

1,545In Stock

$7.65

$6.88

$6.65

$6.48

View

Min.: 1
Mult.: 1

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

LAA110LSTR
IXYS Integrated Circuits
1: $11.00
698In Stock

Mfr. Part #
LAA110LSTR

Mouser Part #
849-LAA110LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

698In Stock

Cut Tape

$11.00

$10.45

$10.20

$10.04

Reel

$8.28

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

LCA120STR
IXYS Integrated Circuits
1: $7.44
2,660In Stock

Mfr. Part #
LCA120STR

Mouser Part #
849-LCA120STR

IXYS Integrated Circuits

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

Learn More

Datasheet

2,660In Stock

Cut Tape

$7.44

$7.01

$6.83

$6.70

Reel

$5.39

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: $19.77
241In Stock

Mfr. Part #
PAA110S

Mouser Part #
849-PAA110S

IXYS Integrated Circuits

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

Learn More

Datasheet

241In Stock

$19.77

$17.61

$16.82

$13.92

View

Min.: 1
Mult.: 1

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

PAA150S
IXYS Integrated Circuits
1: $20.12
337In Stock

Mfr. Part #
PAA150S

Mouser Part #
849-PAA150S

IXYS Integrated Circuits

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

Learn More

Datasheet

337In Stock

$20.12

$17.91

$17.11

$16.44

$12.34

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

CPC1393GR
IXYS Integrated Circuits
1: $6.84
692In Stock

Mfr. Part #
CPC1393GR

Mouser Part #
849-CPC1393GR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay

Learn More

Datasheet

692In Stock

$6.84

$6.11

$5.83

$5.63

View

Min.: 1
Mult.: 1

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

CPC1727J
IXYS Integrated Circuits
1: $29.72
475In Stock

Mfr. Part #
CPC1727J

Mouser Part #
849-CPC1727J

IXYS Integrated Circuits

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

Learn More

Datasheet

475In Stock

$29.72

$27.03

$25.98

$25.13

View

Min.: 1
Mult.: 1

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

CPC1230NTR
IXYS Integrated Circuits
1: $4.92
3,560In Stock

Mfr. Part #
CPC1230NTR

Mouser Part #
849-CPC1230NTR

IXYS Integrated Circuits

Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay

Learn More

Datasheet

3,560In Stock

Cut Tape

$4.92

$4.39

$4.19

$4.00

View

Reel

$2.85

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

CPC1777J
IXYS Integrated Circuits
1: $30.64
196In Stock

Mfr. Part #
CPC1777J

Mouser Part #
849-CPC1777J

IXYS Integrated Circuits

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

Learn More

Datasheet

196In Stock

$30.64

$27.29

$26.01

$24.98

$21.99

Min.: 1
Mult.: 1

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

LAA127S
IXYS Integrated Circuits
1: $13.92
298In Stock

Mfr. Part #
LAA127S

Mouser Part #
849-LAA127S

IXYS Integrated Circuits

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

Learn More

Datasheet

298In Stock

$13.92

$12.97

$12.57

$12.30

View

Min.: 1
Mult.: 1

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

CPC1908J
IXYS Integrated Circuits
1: $30.64
200In Stock

Mfr. Part #
CPC1908J

Mouser Part #
849-CPC1908J

IXYS Integrated Circuits

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

Learn More

Datasheet

200In Stock

$30.64

$27.30

$26.02

$25.06

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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