Optocouplers/Photocouplers

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) 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 Single-Pole Relay 300V 50mA PLA160S IXYS Integrated Circuits 1: €6.67 174In Stock	Mfr. Part No. PLA160S Mouser Part No 849-PLA160S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	174In Stock	€6.67 €6.18 €5.80 €5.63 View €5.23 €5.13	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay PLA172P IXYS Integrated Circuits 1: €8.73 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 Learn More about IXYS Integrated Circuits ixys pla172p relays	Datasheet	122In Stock	€8.73 €8.37 €7.70 €7.01 View €6.83 €6.13 €5.99 €5.84 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA191 IXYS Integrated Circuits 1: €10.50 90In Stock	Mfr. Part No. PAA191 Mouser Part No 849-PAA191	IXYS Integrated Circuits	Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	90In Stock	€10.50 €9.63 €9.30 €8.98 View €8.36 €8.24 €8.14 €8.12 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR OAA160S IXYS Integrated Circuits 1: €9.22 167In Stock	Mfr. Part No. OAA160S Mouser Part No 849-OAA160S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	167In Stock	€9.22 €8.41 €8.08 €7.81 View €7.71 €7.09 €6.90 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143S IXYS Integrated Circuits 1: €5.65 244In Stock	Mfr. Part No. PLA143S Mouser Part No 849-PLA143S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	244In Stock	€5.65 €5.25 €4.92 €4.74 View €4.56 €4.34 €4.27 €4.21 €4.20	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA PLA150S IXYS Integrated Circuits 1: €7.53 137In Stock	Mfr. Part No. PLA150S Mouser Part No 849-PLA150S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	137In Stock	€7.53 €6.72 €6.42 €5.58 View €5.51 €4.95 €4.84 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA160 IXYS Integrated Circuits 1: €6.31 213In Stock	Mfr. Part No. PLA160 Mouser Part No 849-PLA160	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	213In Stock	€6.31 €6.02 €5.95 €5.05 View €4.96 €4.86 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972G IXYS Integrated Circuits 1: €2.59 424In Stock End of Life	Mfr. Part No. CPC1972G Mouser Part No 849-CPC1972G End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	424In Stock	€2.59	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA100L IXYS Integrated Circuits 1: €9.24 149In Stock End of Life	Mfr. Part No. LAA100L Mouser Part No 849-LAA100L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	149In Stock	€9.24 €8.66 €7.70 €7.30 View €6.92 €6.16 €6.05 €5.98 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972GS IXYS Integrated Circuits 1: €2.52 489In Stock End of Life	Mfr. Part No. CPC1972GS Mouser Part No 849-CPC1972GS End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	489In Stock	€2.52 €2.07 €1.90 €1.70 View €1.63 €1.60 €1.55 Quote	Min.: 1 Mult.: 1	SMD/SMT
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330G IXYS Integrated Circuits 1: €3.36 439In Stock End of Life	Mfr. Part No. CPC1330G Mouser Part No 849-CPC1330G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	439In Stock	€3.36 €3.16 €2.84 €2.40 View €2.39 €2.23 €2.19 €2.18	Min.: 1 Mult.: 1	PCB Mount	DIP-4	MOSFET
Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD LCA125 IXYS Integrated Circuits 1: €6.14 160In Stock End of Life	Mfr. Part No. LCA125 Mouser Part No 849-LCA125 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	160In Stock	€6.14 €5.09 €4.76 €4.59 View €4.38 €4.35 €4.34	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143STR IXYS Integrated Circuits 1: €6.51 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 about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	318In Stock	Cut Tape €6.51 €6.11 €5.43 €5.15 Reel €3.90 View €4.88 €4.58 €4.42 €3.89 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA193S IXYS Integrated Circuits 1: €5.53 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 about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	294In Stock	€5.53 €4.93 €4.70 €4.54 View €4.38 €4.06 €3.98 €3.93 €3.92	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006N IXYS Integrated Circuits 1: €1.08 127,229In Stock End of Life	Mfr. Part No. CPC1006N Mouser Part No 849-CPC1006N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	127,229In Stock	€1.08 €0.972 €0.929 €0.894 View €0.857 €0.821 €0.708 €0.684 €0.642	Min.: 1 Mult.: 1	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1008N IXYS Integrated Circuits 1: €2.10 63,549In Stock End of Life	Mfr. Part No. CPC1008N Mouser Part No 849-CPC1008N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 4PIN SOP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	63,549In Stock	€2.10 €1.95 €1.89 €1.85 €1.73	Min.: 1 Mult.: 1	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025NTR IXYS Integrated Circuits 1: €2.67 92,606In Stock End of Life	Mfr. Part No. CPC1025NTR Mouser Part No 849-CPC1025NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	92,606In Stock	Cut Tape €2.67 €2.37 €2.26 €2.18 Reel €1.72 View €2.11 €2.01 €1.94 €1.72 €1.71 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GRTR IXYS Integrated Circuits 1: €3.58 9,676In Stock End of Life	Mfr. Part No. CPC1390GRTR Mouser Part No 849-CPC1390GRTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole Relay 400V 140mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9,676In Stock	Cut Tape €3.58 €3.20 €3.05 €2.94 Reel €2.59 View €2.83 €2.70 €2.61 €2.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-4	MOSFET
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1988J IXYS Integrated Circuits 1: €34.74 583In Stock End of Life	Mfr. Part No. CPC1988J Mouser Part No 849-CPC1988J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	583In Stock	€34.74 €33.34 €31.83 €30.74 View €29.68 €28.19 Quote	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	MOSFET
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710S IXYS Integrated Circuits 1: €16.63 4,928In Stock End of Life	Mfr. Part No. LAA710S Mouser Part No 849-LAA710S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4,928In Stock	€16.63 €14.82 €14.16 €13.66 View €13.19 €12.53 €12.04 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710STR IXYS Integrated Circuits 1: €16.85 3,088In Stock End of Life	Mfr. Part No. LAA710STR Mouser Part No 849-LAA710STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,088In Stock	Cut Tape €16.85 €15.01 €14.33 €13.71 View Reel €11.54 €13.09 €12.36 €11.94 €11.54 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out CPC1966YX6 IXYS Integrated Circuits 1: €11.98 2,139In Stock	Mfr. Part No. CPC1966YX6 Mouser Part No 849-CPC1966YX6	IXYS Integrated Circuits	Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,139In Stock	€11.98 €10.67 €10.18 €9.79 €9.37	Min.: 1 Mult.: 1	PCB Mount	SIP-4	SCR
Solid State Relays - PCB Mount SP AC Solid State Power Switch IXYS Integrated Circuits CPC1998J CPC1998J IXYS Integrated Circuits 1: €18.71 3,155In Stock 7,700Expected 15/04/2027	Mfr. Part No. CPC1998J Mouser Part No 849-CPC1998J	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP AC Solid State Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,155In Stock 7,700Expected 15/04/2027	€18.71 €16.99 €16.18 €15.47 View €14.95 €14.30 €13.94	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	SCR
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA701S IXYS Integrated Circuits 1: €8.87 6,482In Stock	Mfr. Part No. LCA701S Mouser Part No 849-LCA701S	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,482In Stock	€8.87 €7.90 €7.54 €7.17 €6.74	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA701STR IXYS Integrated Circuits 1: €8.47 2,514In Stock	Mfr. Part No. LCA701STR Mouser Part No 849-LCA701STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,514In Stock	Cut Tape €8.47 €7.55 €7.21 €6.96 View Reel €5.97 €6.73 €6.39 €6.17 €5.97 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount		MOSFET