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	Number of Channels	Output Type
Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay CPC1968J IXYS Integrated Circuits 1: 39,02 € 1.296In Stock End of Life	Mfr. Part No. CPC1968J Mouser Part No 849-CPC1968J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.296In Stock	39,02 € 36,52 € 33,18 €	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		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 350V 120mA Dual Single-Pole LAA110STR IXYS Integrated Circuits 1: 7,55 € 8.758In Stock End of Life	Mfr. Part No. LAA110STR Mouser Part No 849-LAA110STR 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	8.758In Stock	Cut Tape 7,55 € 6,73 € 6,42 € 6,20 € View Reel 4,39 € 5,99 € 5,68 € 5,48 € 4,39 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-8		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
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: 6,65 € 6.191In Stock 425Expected 1/8/2027	Mfr. Part No. CPC1976Y Mouser Part No 849-CPC1976Y	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6.191In Stock 425Expected 1/8/2027	6,65 € 5,47 € 4,76 € 4,47 €	Min.: 1 Mult.: 1	Through Hole	SIP-4	1 Channel	PhotoSCR
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 4/15/2027	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 4/15/2027	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 SS Relay SP, NO 4-PIN SOP OptoMOS CPC1004N IXYS Integrated Circuits 1: 3,15 € 6.600In Stock 9.000Expected 7/5/2027 End of Life	Mfr. Part No. CPC1004N Mouser Part No 849-CPC1004N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6.600In Stock 9.000Expected 7/5/2027	3,15 € 2,81 € 2,66 € 2,56 € View 2,49 € 2,36 € 2,29 € 2,21 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006NTR IXYS Integrated Circuits 1: 1,84 € 30.277In Stock End of Life	Mfr. Part No. CPC1006NTR Mouser Part No 849-CPC1006NTR 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	30.277In Stock	Cut Tape 1,84 € 1,77 € 1,69 € 1,63 € Reel 1,31 € View 1,57 € 1,49 € 1,44 € 1,31 € 1,26 € MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010N IXYS Integrated Circuits 1: 3,52 € 3.597In Stock End of Life	Mfr. Part No. CPC1010N Mouser Part No 849-CPC1010N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V, 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3.597In Stock	3,52 € 3,14 € 2,99 € 2,87 € View 2,76 € 2,63 € 2,52 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010NTR IXYS Integrated Circuits 1: 3,36 € 6.979In Stock 10.000Expected 7/6/2027 End of Life	Mfr. Part No. CPC1010NTR Mouser Part No 849-CPC1010NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V, 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6.979In Stock 10.000Expected 7/6/2027	Cut Tape 3,36 € 2,99 € 2,86 € 2,74 € View Reel 2,35 € 2,65 € 2,53 € 2,44 € 2,36 € 2,35 € MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount SPNO RELAY CPC1017N IXYS Integrated Circuits 1: 0,918 € 186.425In Stock 120.000Expected 2/22/2027 End of Life	Mfr. Part No. CPC1017N Mouser Part No 849-CPC1017N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPNO RELAY Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	186.425In Stock 120.000Expected 2/22/2027	0,918 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay CPC1017NTR IXYS Integrated Circuits 1: 1,76 € 16.397In Stock 213.788On Order End of Life	Mfr. Part No. CPC1017NTR Mouser Part No 849-CPC1017NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	16.397In Stock 213.788On Order On Order Ship Dates Mfr. No: CPC1017NTR Stock: 16.397 Can Dispatch Immediately On Order: 65.788 Expected 11/13/2026 68.000 Expected 3/11/2027 80.000 Expected 5/25/2027 Factory Lead Time: 30 Weeks	Cut Tape 1,76 € 1,57 € 1,51 € 1,45 € View Reel 1,16 € 1,40 € 1,34 € 1,29 € 1,16 € 1,16 € MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay CPC1019NTR IXYS Integrated Circuits 1: 3,36 € 60.687In Stock End of Life	Mfr. Part No. CPC1019NTR Mouser Part No 849-CPC1019NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	60.687In Stock	Cut Tape 3,36 € 2,99 € 2,86 € 2,75 € View Reel 2,29 € 2,66 € 2,54 € 2,45 € 2,37 € 2,29 € MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A CPC1020N IXYS Integrated Circuits 1: 5,78 € 34.042In Stock End of Life	Mfr. Part No. CPC1020N Mouser Part No 849-CPC1020N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	34.042In Stock	5,78 € 5,16 € 4,88 € 4,67 € View 4,38 € 4,14 € 3,81 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay CPC1020NTR IXYS Integrated Circuits 1: 5,21 € 101.556In Stock End of Life	Mfr. Part No. CPC1020NTR Mouser Part No 849-CPC1020NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	101.556In Stock	Cut Tape 5,21 € 4,64 € 4,44 € 4,28 € View Reel 3,66 € 4,14 € 3,94 € 3,80 € 3,72 € 3,66 € MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025N IXYS Integrated Circuits 1: 2,79 € 7.390In Stock 400Expected 12/25/2026 End of Life	Mfr. Part No. CPC1025N Mouser Part No 849-CPC1025N 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	7.390In Stock 400Expected 12/25/2026	2,79 € 2,49 € 2,37 € 2,29 € View 2,19 € 2,09 € 2,02 € 1,95 €	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 € 63.853In 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	63.853In 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 SPST-NO 4PIN SOP CPC1230N IXYS Integrated Circuits 1: 3,23 € 1.328In Stock End of Life	Mfr. Part No. CPC1230N Mouser Part No 849-CPC1230N 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	1.328In Stock	3,23 € 2,95 € 2,71 € 2,57 € View 2,49 € 2,37 € 2,30 € 2,15 € 2,08 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1708J IXYS Integrated Circuits 1: 16,58 € 492In Stock End of Life	Mfr. Part No. CPC1708J Mouser Part No 849-CPC1708J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount DC Only Single Pole i4-PAC Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	492In Stock	16,58 € 14,77 € 14,10 € 13,61 € View 13,15 € 12,43 € 12,00 € 11,62 €	Min.: 1 Mult.: 1	PCB Mount	i4-PAC		MOSFET
Solid State Relays - PCB Mount 250V Single Pole DC Power Relay CPC1726Y IXYS Integrated Circuits 1: 7,22 € 572In Stock End of Life	Mfr. Part No. CPC1726Y Mouser Part No 849-CPC1726Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V Single Pole DC Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	572In Stock	7,22 € 6,76 € 6,01 € 5,71 € View 5,41 € 5,05 € 4,88 € 4,70 €	Min.: 1 Mult.: 1	PCB Mount	i4-PAC		MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1727J IXYS Integrated Circuits 1: 19,77 € 344In Stock End of Life	Mfr. Part No. CPC1727J Mouser Part No 849-CPC1727J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount DC Only Single Pole i4-PAC Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	344In Stock	19,77 € 18,92 € 16,07 € 14,06 € Quote Quote	Min.: 1 Mult.: 1	PCB Mount	i4-PAC		MOSFET
Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay CPC1907B IXYS Integrated Circuits 1: 10,34 € 9.808In Stock 17.625Expected 2/12/2027 End of Life	Mfr. Part No. CPC1907B Mouser Part No 849-CPC1907B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9.808In Stock 17.625Expected 2/12/2027	10,34 € 9,20 € 8,75 € 8,38 € View 8,03 € 7,67 € 7,40 € 7,16 € Quote	Min.: 1 Mult.: 1	PCB Mount	SOIC-8		MOSFET
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LSTR IXYS Integrated Circuits 1: 7,72 € 698In Stock End of Life	Mfr. Part No. LAA110LSTR Mouser Part No 849-LAA110LSTR 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	698In Stock	Cut Tape 7,72 € 6,89 € 6,58 € 6,35 € Reel 5,41 € View 6,13 € 5,81 € 5,61 € 5,10 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-8		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110L IXYS Integrated Circuits 1: 3,77 € 1.116In Stock End of Life	Mfr. Part No. LCA110L Mouser Part No 849-LCA110L 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	1.116In Stock	3,77 € 3,51 € 3,35 € 3,24 € View 3,13 € 2,92 € 2,80 € 2,73 € 2,47 €	Min.: 1 Mult.: 1	PCB Mount	DIP-6		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110STR IXYS Integrated Circuits 1: 3,50 € 8.782In Stock 4.000Expected 8/9/2027 End of Life	Mfr. Part No. LCA110STR Mouser Part No 849-LCA110STR 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	8.782In Stock 4.000Expected 8/9/2027	Cut Tape 3,50 € 3,12 € 2,98 € 2,87 € Reel 2,41 € View 2,77 € 2,65 € 2,55 € 2,38 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-6		MOSFET