Optocouplers/Photocouplers – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Optocouplers/Photocouplers

List Images

Results: 298

Applied Filters:

Mounting Style

Package/Case

Number of Channels

Output Type

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

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

CPC1983B
IXYS Integrated Circuits
1: £4.07
48In Stock

Mfr. Part No.
CPC1983B

Mouser Part No
849-CPC1983B

IXYS Integrated Circuits

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

Learn More

Datasheet

48In Stock

£4.07

£3.30

£3.15

£3.02

View

Min.: 1
Mult.: 1

PCB Mount

MOSFET

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

LAA100L
IXYS Integrated Circuits
1: £3.92
149In Stock

Mfr. Part No.
LAA100L

Mouser Part No
849-LAA100L

IXYS Integrated Circuits

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

Learn More

Datasheet

149In Stock

£3.92

£3.78

£3.03

£2.65

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA100LSTR
IXYS Integrated Circuits
1: £3.84
1,000In Stock

Mfr. Part No.
LAA100LSTR

Mouser Part No
849-LAA100LSTR

IXYS Integrated Circuits

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

Learn More

Datasheet

1,000In Stock

Cut Tape

£3.84

£3.61

£2.88

£2.66

Reel

£2.58

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

PCB Mount

SMD DIP-8

MOSFET

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

LAA108
IXYS Integrated Circuits
1: £2.07
359In Stock

Mfr. Part No.
LAA108

Mouser Part No
849-LAA108

IXYS Integrated Circuits

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

Learn More

Datasheet

359In Stock

£2.07

£1.85

£1.76

£1.69

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA108S
IXYS Integrated Circuits
1: £2.07
309In Stock

Mfr. Part No.
LAA108S

Mouser Part No
849-LAA108S

IXYS Integrated Circuits

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

Learn More

Datasheet

309In Stock

£2.07

£1.70

£1.63

£1.60

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA110L
IXYS Integrated Circuits
1: £3.65
96In Stock

Mfr. Part No.
LAA110L

Mouser Part No
849-LAA110L

IXYS Integrated Circuits

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

Learn More

Datasheet

96In Stock

£3.65

£3.25

£3.11

£2.99

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA110LS
IXYS Integrated Circuits
1: £2.77
6In Stock

Mfr. Part No.
LAA110LS

Mouser Part No
849-LAA110LS

IXYS Integrated Circuits

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

Learn More

Datasheet

6In Stock

£2.77

£2.07

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA120
IXYS Integrated Circuits
1: £3.56
146In Stock

Mfr. Part No.
LAA120

Mouser Part No
849-LAA120

IXYS Integrated Circuits

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

Learn More

Datasheet

146In Stock

£3.56

£3.23

£3.05

£2.92

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA120S
IXYS Integrated Circuits
1: £2.77
5In Stock

Mfr. Part No.
LAA120S

Mouser Part No
849-LAA120S

IXYS Integrated Circuits

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

Learn More

Datasheet

5In Stock

£2.77

£2.28

£2.20

£2.10

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

Solid State Relays - PCB Mount DUAL POLE

LAA125
IXYS Integrated Circuits
1: £3.48
20In Stock
100Expected 21/05/2026

Mfr. Part No.
LAA125

Mouser Part No
849-LAA125

IXYS Integrated Circuits

Solid State Relays - PCB Mount DUAL POLE

Learn More

Datasheet

20In Stock

100Expected 21/05/2026

£3.48

£3.11

£2.97

£2.85

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA125L
IXYS Integrated Circuits
1: £3.77
85In Stock

Mfr. Part No.
LAA125L

Mouser Part No
849-LAA125L

IXYS Integrated Circuits

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

Learn More

Datasheet

85In Stock

£3.77

£3.10

£2.99

£2.88

View

Min.: 1
Mult.: 1

PCB Mount

DIP-8

MOSFET

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

LAA125LS
IXYS Integrated Circuits
1: £3.56
93In Stock

Mfr. Part No.
LAA125LS

Mouser Part No
849-LAA125LS

IXYS Integrated Circuits

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

Learn More

Datasheet

93In Stock

£3.56

£2.82

£2.68

£2.60

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA125S
IXYS Integrated Circuits
1: £3.48
159In Stock

Mfr. Part No.
LAA125S

Mouser Part No
849-LAA125S

IXYS Integrated Circuits

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

Learn More

Datasheet

159In Stock

£3.48

£2.86

£2.75

£2.51

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA127LS
IXYS Integrated Circuits
1: £4.70
90In Stock

Mfr. Part No.
LAA127LS

Mouser Part No
849-LAA127LS

IXYS Integrated Circuits

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

Learn More

Datasheet

90In Stock

£4.70

£3.85

£3.73

£3.46

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LAA127S
IXYS Integrated Circuits
1: £4.70
298In Stock

Mfr. Part No.
LAA127S

Mouser Part No
849-LAA127S

IXYS Integrated Circuits

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

Learn More

Datasheet

298In Stock

£4.70

£3.86

£3.73

£3.63

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-8

MOSFET

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

LCA100LS
IXYS Integrated Circuits
1: £2.41
12In Stock

Mfr. Part No.
LCA100LS

Mouser Part No
849-LCA100LS

IXYS Integrated Circuits

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

Learn More

Datasheet

12In Stock

£2.41

£1.98

£1.84

£1.73

£1.67

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA110LS
IXYS Integrated Circuits
1: £1.48
53In Stock

Mfr. Part No.
LCA110LS

Mouser Part No
849-LCA110LS

IXYS Integrated Circuits

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

Learn More

Datasheet

53In Stock

£1.48

£1.21

£1.16

£1.11

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA120
IXYS Integrated Circuits
1: £2.41
2In Stock
3,050On Order

Mfr. Part No.
LCA120

Mouser Part No
849-LCA120

IXYS Integrated Circuits

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

Learn More

Datasheet

2In Stock

3,050On Order

£2.41

£1.98

£1.90

£1.80

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA120L
IXYS Integrated Circuits
1: £2.41
90In Stock

Mfr. Part No.
LCA120L

Mouser Part No
849-LCA120L

IXYS Integrated Circuits

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

Learn More

Datasheet

90In Stock

£2.41

£1.96

£1.81

£1.73

£1.68

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA120LS
IXYS Integrated Circuits
1: £2.65
94In Stock

Mfr. Part No.
LCA120LS

Mouser Part No
849-LCA120LS

IXYS Integrated Circuits

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

Learn More

Datasheet

94In Stock

£2.65

£2.11

£1.87

£1.69

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA120S
IXYS Integrated Circuits
1: £2.09
340In Stock

Mfr. Part No.
LCA120S

Mouser Part No
849-LCA120S

IXYS Integrated Circuits

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

Learn More

Datasheet

340In Stock

£2.09

£2.04

£1.92

£1.87

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA125
IXYS Integrated Circuits
1: £2.77
10In Stock
150Expected 19/02/2026

Mfr. Part No.
LCA125

Mouser Part No
849-LCA125

IXYS Integrated Circuits

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

Learn More

Datasheet

10In Stock

150Expected 19/02/2026

£2.77

£2.01

£1.96

£1.95

£1.94

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

LCA127LS
IXYS Integrated Circuits
1: £2.99
65In Stock

Mfr. Part No.
LCA127LS

Mouser Part No
849-LCA127LS

IXYS Integrated Circuits

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

Learn More

Datasheet

65In Stock

£2.99

£2.80

£2.10

£2.07

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA127S
IXYS Integrated Circuits
1: £2.71
113In Stock

Mfr. Part No.
LCA127S

Mouser Part No
849-LCA127S

IXYS Integrated Circuits

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

Learn More

Datasheet

113In Stock

£2.71

£2.48

£2.30

£2.21

View

Min.: 1
Mult.: 1

PCB Mount

SMD DIP-6

MOSFET

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

LCA129
IXYS Integrated Circuits
1: £2.23
120In Stock

Mfr. Part No.
LCA129

Mouser Part No
849-LCA129

IXYS Integrated Circuits

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

Learn More

Datasheet

120In Stock

£2.23

£1.82

£1.79

£1.69

View

Min.: 1
Mult.: 1

PCB Mount

DIP-6

MOSFET

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

Types of Optocouplers/Photocouplers

Customer Service Office

Company

Resources

Support