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 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA710STR IXYS Integrated Circuits 1: 8,63 € 4 817In Stock	Mfr. Part No. LCA710STR Mouser Part No 849-LCA710STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4 817In Stock	Cut Tape 8,63 € 8,09 € 7,20 € 6,84 € View Reel 5,52 € 6,48 € 5,93 € 5,72 € 5,52 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715STR IXYS Integrated Circuits 1: 9,30 € 4 158In Stock 5 000Expected 16/06/2027	Mfr. Part No. LCA715STR Mouser Part No 849-LCA715STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4 158In Stock 5 000Expected 16/06/2027	Cut Tape 9,30 € 8,28 € 7,91 € 7,64 € View Reel 6,37 € 7,38 € 7,03 € 6,79 € 6,37 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006NTR IXYS Integrated Circuits 1: 1,96 € 31 777In 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	31 777In Stock	Cut Tape 1,96 € 1,84 € 1,67 € 1,61 € Reel 1,38 € View 1,56 € 1,47 € 1,44 € 1,38 € 1,27 € MouseReel Available	Min.: 1 Mult.: 1 : 2 000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010NTR IXYS Integrated Circuits 1: 3,36 € 9 284In Stock 6 000Expected 24/05/2027 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	9 284In Stock 6 000Expected 24/05/2027	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 1-Form-A 100V 100mA Solid State Relay CPC1016N IXYS Integrated Circuits 1: 2,76 € 1 646In Stock End of Life	Mfr. Part No. CPC1016N Mouser Part No 849-CPC1016N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1 646In Stock	2,76 € 2,59 € 2,30 € 2,22 € View 2,14 € 2,04 € 1,97 € 1,90 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount SPNO RELAY CPC1017N IXYS Integrated Circuits 1: 0,918 € 189 810In Stock 120 000Expected 12/05/2027 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	189 810In Stock 120 000Expected 12/05/2027	0,918 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A CPC1020N IXYS Integrated Circuits 1: 5,78 € 34 160In 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 160In Stock	5,78 € 5,16 € 4,88 € 4,67 € View 4,46 € 4,21 € 3,83 €	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 € 107 781In 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	107 781In 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 30/07/2027 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 30/07/2027	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 SPST-NO 4PIN SOP CPC1230N IXYS Integrated Circuits 1: 3,23 € 1 753In 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 753In Stock	3,23 € 2,95 € 2,72 € 2,61 € View 2,51 € 2,39 € 2,32 € 2,15 € 2,08 €	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1230NTR IXYS Integrated Circuits 1: 2,99 € 2 649In Stock End of Life	Mfr. Part No. CPC1230NTR Mouser Part No 849-CPC1230NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2 649In Stock	Cut Tape 2,99 € 2,80 € 2,49 € 2,38 € View Reel 2,06 € 2,30 € 2,20 € 2,12 € 2,06 € 2,06 € MouseReel Available	Min.: 1 Mult.: 1 : 2 000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1708J IXYS Integrated Circuits 1: 16,58 € 527In 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	527In 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 8Pin Single Pole NOR Mally Open SS Relay CPC1907B IXYS Integrated Circuits 1: 10,34 € 13 117In Stock 17 625Expected 12/02/2027 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	13 117In Stock 17 625Expected 12/02/2027	10,34 € 9,20 € 7,48 € 7,23 € View 7,01 € 6,79 € 6,75 €	Min.: 1 Mult.: 1	PCB Mount	SOIC-8		MOSFET
Solid State Relays - PCB Mount SP, NO ISOPLUS-264 CPC1927J IXYS Integrated Circuits 1: 27,45 € 218In Stock End of Life	Mfr. Part No. CPC1927J Mouser Part No 849-CPC1927J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, NO ISOPLUS-264 Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	218In Stock	27,45 € 24,55 € 23,44 € 22,63 € View 21,77 € 19,19 €	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET
Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay CPC1968J IXYS Integrated Circuits 1: 39,02 € 921In Stock 375Expected 30/11/2026 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	921In Stock 375Expected 30/11/2026	39,02 € 36,52 € 33,18 €	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		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 € 5,01 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-8		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110STR IXYS Integrated Circuits 1: 3,50 € 11 199In Stock 4 000Expected 13/01/2027 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	11 199In Stock 4 000Expected 13/01/2027	Cut Tape 3,50 € 3,12 € 2,98 € 2,87 € Reel 2,39 € View 2,78 € 2,65 € 2,56 € 2,33 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127STR IXYS Integrated Circuits 1: 6,35 € 1 404In Stock End of Life	Mfr. Part No. LCA127STR Mouser Part No 849-LCA127STR 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 404In Stock	Cut Tape 6,35 € 5,95 € 5,29 € 5,02 € View Reel 4,16 € 4,76 € 4,46 € 4,31 € 4,16 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount 8-Pin Power SOIC CPC1966B IXYS Integrated Circuits 1: 8,45 € 1 905In Stock 1 725Expected 24/03/2027	Mfr. Part No. CPC1966B Mouser Part No 849-CPC1966B	IXYS Integrated Circuits	Solid State Relays - PCB Mount 8-Pin Power SOIC Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1 905In Stock 1 725Expected 24/03/2027	8,45 € 7,53 € 7,18 € 6,93 € View 6,68 € 6,25 € 6,12 € 5,97 €	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		SCR
Solid State Relays - PCB Mount AC Switch 3A, 600V CPC1966Y IXYS Integrated Circuits 1: 7,40 € 456In Stock 7 650Expected 23/11/2026	Mfr. Part No. CPC1966Y Mouser Part No 849-CPC1966Y	IXYS Integrated Circuits	Solid State Relays - PCB Mount AC Switch 3A, 600V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	456In Stock 7 650Expected 23/11/2026	7,40 € 6,59 € 6,10 € 6,07 € 5,88 €	Min.: 1 Mult.: 1	PCB Mount	SIP-4		SCR
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: 6,65 € 946In Stock 5 975On Order	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	946In Stock 5 975On Order On Order Ship Dates Mfr. No: CPC1976Y Stock: 946 Can Dispatch Immediately On Order: 1 750 Expected 22/10/2026 4 225 Expected 08/01/2027 Factory Lead Time: 23 Weeks	6,65 € 5,47 € 4,76 € 4,47 €	Min.: 1 Mult.: 1	Through Hole	SIP-4	1 Channel	PhotoSCR
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712S IXYS Integrated Circuits 1: 9,85 € 283In Stock	Mfr. Part No. LCA712S Mouser Part No 849-LCA712S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	283In Stock	9,85 € 8,75 € 8,32 € 7,88 € View 7,50 € 7,16 € 6,91 € 6,67 €	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715 IXYS Integrated Circuits 1: 10,31 € 833In Stock	Mfr. Part No. LCA715 Mouser Part No 849-LCA715	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	833In Stock	10,31 € 9,18 € 8,74 € 8,35 € View 8,01 € 7,65 € 7,39 € 7,13 € Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay LCA717STR IXYS Integrated Circuits 1: 8,94 € 812In Stock 2 000Expected 15/07/2027	Mfr. Part No. LCA717STR Mouser Part No 849-LCA717STR	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	812In Stock 2 000Expected 15/07/2027	Cut Tape 8,94 € 8,38 € 7,45 € 7,08 € View Reel 5,72 € 6,71 € 6,13 € 5,93 € 5,72 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	PCB Mount	SMD DIP-6		MOSFET

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