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: 277

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; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Output Type
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127STR IXYS Integrated Circuits 1: £8.68 442In Stock End of Life	Mfr. Part No. LAA127STR Mouser Part No 849-LAA127STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	442In Stock	Cut Tape £8.68 £7.73 £7.39 £7.13 View Reel £6.08 £6.84 £6.53 £6.31 £6.08 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA120 IXYS Integrated Circuits 1: £4.93 2,459In Stock End of Life	Mfr. Part No. LCA120 Mouser Part No 849-LCA120 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,459In Stock	£4.93 £4.63 £4.11 £3.90 View £3.70 £3.51 £3.39 £3.27	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120L IXYS Integrated Circuits 1: £4.66 85In Stock End of Life	Mfr. Part No. LCA120L Mouser Part No 849-LCA120L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	85In Stock	£4.66 £4.64 £4.12 £3.90 View £3.68 £3.61 £3.56 £3.50 £3.48	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120LS IXYS Integrated Circuits 1: £4.98 84In Stock End of Life	Mfr. Part No. LCA120LS Mouser Part No 849-LCA120LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	84In Stock	£4.98 £4.68 £4.16 £3.95 View £3.44 £3.36 £3.29 £3.23 £3.21	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN SMT LCA120S IXYS Integrated Circuits 1: £4.70 53In Stock End of Life	Mfr. Part No. LCA120S Mouser Part No 849-LCA120S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN SMT Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	53In Stock	£4.70 £4.19 £4.00 £3.86 View £3.52 £3.46 £3.40 £3.33 £3.32	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120STR IXYS Integrated Circuits 1: £4.53 1,433In Stock 2,000Expected 04/08/2027 End of Life	Mfr. Part No. LCA120STR Mouser Part No 849-LCA120STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,433In Stock 2,000Expected 04/08/2027	Cut Tape £4.53 £4.04 £3.86 £3.73 Reel £3.19 View £3.60 £3.42 £3.30 £3.08 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127 IXYS Integrated Circuits 1: £5.36 1,921In Stock End of Life	Mfr. Part No. LCA127 Mouser Part No 849-LCA127 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,921In Stock	£5.36 £4.78 £4.57 £4.40 View £4.25 £4.04 £3.90 £3.77	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127S IXYS Integrated Circuits 1: £5.82 93In Stock End of Life	Mfr. Part No. LCA127S Mouser Part No 849-LCA127S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	93In Stock	£5.82 £5.46 £4.85 £4.60 View £4.37 £4.09 £3.95 £3.82	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA182 IXYS Integrated Circuits 1: £3.83 150In Stock End of Life	Mfr. Part No. LCA182 Mouser Part No 849-LCA182 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	150In Stock	£3.83 £3.41 £3.27 £3.10 View £2.98 £2.84 £2.70 £2.61	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA182STR IXYS Integrated Circuits 1: £3.74 3,383In Stock End of Life	Mfr. Part No. LCA182STR Mouser Part No 849-LCA182STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,383In Stock	Cut Tape £3.74 £3.33 £3.19 £3.08 Reel £2.63 View £2.96 £2.82 £2.72 £2.55 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA710 IXYS Integrated Circuits 1: £7.48 23In Stock 10,050On Order	Mfr. Part No. LCA710 Mouser Part No 849-LCA710	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	23In Stock 10,050On Order On Order Ship Dates Mfr. No: LCA710 Stock: 23 Can Dispatch Immediately On Order: 5,150 Expected 02/11/2026 4,900 Expected 10/02/2027 Factory Lead Time: 35 Weeks	£7.48 £7.03 £6.30 £5.99 View £5.76 £5.50	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay LCA717 IXYS Integrated Circuits 1: £7.50 201In Stock 300Expected 02/11/2026	Mfr. Part No. LCA717 Mouser Part No 849-LCA717	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	201In Stock 300Expected 02/11/2026	£7.50 £6.68 £6.38 £6.15 View £5.95 £5.46 £5.30 £5.19 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay OMA160S IXYS Integrated Circuits 1: £5.03 72In Stock	Mfr. Part No. OMA160S Mouser Part No 849-OMA160S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	72In Stock	£5.03 £4.48 £4.47 £4.23 View £3.95 £3.85 £3.76 £3.63	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount DPST-NO/NO 6PIN DIP PAA193 IXYS Integrated Circuits 1: £8.21 91In Stock	Mfr. Part No. PAA193 Mouser Part No 849-PAA193	IXYS Integrated Circuits	Solid State Relays - PCB Mount DPST-NO/NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	91In Stock	£8.21 £7.32 £6.99 £6.75 View £6.51 £6.21 £5.67 £5.59	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR PAA193S IXYS Integrated Circuits 1: £8.21 153In Stock 50Expected 07/01/2027	Mfr. Part No. PAA193S Mouser Part No 849-PAA193S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	153In Stock 50Expected 07/01/2027	£8.21 £7.32 £6.99 £6.75 View £6.51 £6.02 £5.92 £5.81 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA110L IXYS Integrated Circuits 1: £5.81 61In Stock	Mfr. Part No. PLA110L Mouser Part No 849-PLA110L	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	61In Stock	£5.81 £5.18 £4.94 £4.77 View £4.60 £4.17 £4.12 £4.08 £4.06	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA110S IXYS Integrated Circuits 1: £6.09 45In Stock 250Expected 05/07/2027	Mfr. Part No. PLA110S Mouser Part No 849-PLA110S	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	45In Stock 250Expected 05/07/2027	£6.09 £5.71 £5.08 £4.83 View £4.57 £4.26 £4.12 £3.98	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA PLA132 IXYS Integrated Circuits 1: £7.05 113In Stock	Mfr. Part No. PLA132 Mouser Part No 849-PLA132	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	113In Stock	£7.05 £6.29 £6.01 £5.80 View £5.76 £5.28 £5.19 £5.13 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA PLA132S IXYS Integrated Circuits 1: £7.05 66In Stock	Mfr. Part No. PLA132S Mouser Part No 849-PLA132S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	66In Stock	£7.05 £6.29 £6.01 £5.80 View £5.60 £5.31 £4.90 £4.85 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA140L IXYS Integrated Circuits 1: £7.14 38In Stock 100Expected 03/06/2027	Mfr. Part No. PLA140L Mouser Part No 849-PLA140L	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	38In Stock 100Expected 03/06/2027	£7.14 £6.36 £6.08 £5.87 View £5.56 £5.41 £5.33 £5.26 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA PLA170 IXYS Integrated Circuits 1: £5.34 10In Stock 400Expected 29/07/2027	Mfr. Part No. PLA170 Mouser Part No 849-PLA170	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	10In Stock 400Expected 29/07/2027	£5.34 £4.89 £4.47 £4.23 View £4.02 £3.62	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA PLA170S IXYS Integrated Circuits 1: £5.36 15In Stock 1,250On Order	Mfr. Part No. PLA170S Mouser Part No 849-PLA170S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	15In Stock 1,250On Order On Order Ship Dates Mfr. No: PLA170S Stock: 15 Can Dispatch Immediately On Order: 700 Expected 16/11/2026 550 Expected 23/11/2026 Factory Lead Time: 36 Weeks	£5.36 £5.02 £4.30 £4.14 View £4.00 £3.82	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA PLA171PTR IXYS Integrated Circuits 1: £5.66 132In Stock 1,000Expected 28/06/2027	Mfr. Part No. PLA171PTR Mouser Part No 849-PLA171PTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	132In Stock 1,000Expected 28/06/2027	Cut Tape £5.66 £5.18 £4.80 £4.64 View Reel £3.82 £4.48 £4.12 £3.98 £3.82 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay PLA172PTR IXYS Integrated Circuits 1: £7.27 79In Stock	Mfr. Part No. PLA172PTR Mouser Part No 849-PLA172PTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay Learn More about IXYS Integrated Circuits ixys pla172p relays	Datasheet	79In Stock	Cut Tape £7.27 £6.49 £6.20 £5.98 Reel £5.05 View £5.78 £5.49 £5.30 £5.04 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA191 IXYS Integrated Circuits 1: £7.10 24In Stock	Mfr. Part No. PLA191 Mouser Part No 849-PLA191	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	24In Stock	£7.10 £6.33 £6.09 £5.94 View £5.27 £5.20 £5.17 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET

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

Types of Optocouplers/Photocouplers

Applied Filters:

Customer Service Office

Company

Resources

Support