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 (DKK) 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 600mA Solid State Relay CPC1560GS IXYS Integrated Circuits 1: 53,64 kr. 3.298On Order End of Life	Mfr. Part No. CPC1560GS Mouser Part No 849-CPC1560GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3.298On Order On Order Ship Dates Mfr. No: CPC1560GS Stock: 0 On Order: 2.298 Expected 17/05/2027 1.000 Expected 29/12/2027 Factory Lead Time: 54 Weeks	53,64 kr. 50,28 kr. 44,69 kr. 42,45 kr. View 40,21 kr. 37,52 kr.	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1978J IXYS Integrated Circuits 1: 163,45 kr. 860On Order End of Life	Mfr. Part No. CPC1978J Mouser Part No 849-CPC1978J 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	860On Order On Order Ship Dates Mfr. No: CPC1978J Stock: 0 On Order: 160 Expected 21/12/2026 375 Expected 31/03/2027 325 Expected 06/05/2027 Factory Lead Time: 54 Weeks	163,45 kr. 150,24 kr. 142,34 kr. 134,50 kr.	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET
Solid State Relays - PCB Mount SPST iso PLUS-264 CPC1979J IXYS Integrated Circuits 1: 257,74 kr. 6.034On Order End of Life	Mfr. Part No. CPC1979J Mouser Part No 849-CPC1979J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST iso PLUS-264 Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6.034On Order On Order Ship Dates Mfr. No: CPC1979J Stock: 0 On Order: 209 Expected 02/12/2026 5.825 Expected 10/12/2027 Factory Lead Time: 73 Weeks	257,74 kr. 244,76 kr. 231,93 kr. 219,03 kr.	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation CPC1983Y IXYS Integrated Circuits 1: 68,86 kr. 7.435On Order End of Life	Mfr. Part No. CPC1983Y Mouser Part No 849-CPC1983Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7.435On Order On Order Ship Dates Mfr. No: CPC1983Y Stock: 0 On Order: 610 Expected 18/11/2026 6.825 Expected 29/07/2027 Factory Lead Time: 40 Weeks	68,86 kr. 63,04 kr. 57,96 kr. 55,43 kr. View 52,15 kr. 49,76 kr.	Min.: 1 Mult.: 1	PCB Mount	SIP-4		MOSFET
Solid State Relays - PCB Mount RELAY, SS ICS CPC1983YE IXYS Integrated Circuits 1: 70,27 kr. 12.866On Order End of Life	Mfr. Part No. CPC1983YE Mouser Part No 849-CPC1983YE End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY, SS ICS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	12.866On Order On Order Ship Dates Mfr. No: CPC1983YE Stock: 0 On Order: 7.016 Expected 18/11/2026 5.850 Expected 15/02/2027 Factory Lead Time: 37 Weeks	70,27 kr. 65,35 kr. 59,83 kr. 57,74 kr. View 55,73 kr. 53,26 kr.	Min.: 1 Mult.: 1	PCB Mount	SIP-4		MOSFET
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108STR IXYS Integrated Circuits 1: 34,09 kr. 7.000On Order End of Life	Mfr. Part No. LAA108STR Mouser Part No 849-LAA108STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 100V 300mA Double Pole Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7.000On Order On Order Ship Dates Mfr. No: LAA108STR Stock: 0 On Order: 5.000 Expected 28/07/2027 2.000 Expected 30/07/2027 Factory Lead Time: 36 Weeks	Cut Tape 34,09 kr. 30,88 kr. 28,42 kr. 26,93 kr. View Reel 22,53 kr. 25,66 kr. 24,54 kr. 23,65 kr. 22,53 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-8		MOSFET
Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out CPC1976YX6 IXYS Integrated Circuits 1: 68,04 kr. 455Expected 22/02/2027	Mfr. Part No. CPC1976YX6 Mouser Part No 849-CPC1976YX6	IXYS Integrated Circuits	Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	455Expected 22/02/2027	68,04 kr. 55,50 kr. 48,04 kr. 45,13 kr.	Min.: 1 Mult.: 1	Through Hole		1 Channel	PhotoSCR
Solid State Relays - PCB Mount 1-Form-A SSR LCA701 IXYS Integrated Circuits 1: 76,24 kr. 707Expected 16/11/2026	Mfr. Part No. LCA701 Mouser Part No 849-LCA701	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	707Expected 16/11/2026	76,24 kr. 66,99 kr. 63,86 kr. 61,02 kr. View 58,19 kr. 52,07 kr.	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A LCA710R IXYS Integrated Circuits 1: 67,59 kr. 946Expected 21/07/2027	Mfr. Part No. LCA710R Mouser Part No 849-LCA710R	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	946Expected 21/07/2027	67,59 kr. 63,41 kr. 56,32 kr. 53,49 kr. View 50,73 kr. 46,40 kr.	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712STR IXYS Integrated Circuits 1: 74,67 kr. 1.600Expected 21/01/2027	Mfr. Part No. LCA712STR Mouser Part No 849-LCA712STR	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	1.600Expected 21/01/2027	Cut Tape 74,67 kr. 69,97 kr. 62,22 kr. 59,08 kr. View Reel 47,74 kr. 56,02 kr. 51,18 kr. 49,39 kr. 47,74 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount			MOSFET
Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay LCA717S IXYS Integrated Circuits 1: 70,05 kr. 2.180Expected 23/10/2026	Mfr. Part No. LCA717S Mouser Part No 849-LCA717S	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	2.180Expected 23/10/2026	70,05 kr. 65,65 kr. 58,34 kr. 55,43 kr. View 52,52 kr. 47,97 kr. 46,40 kr. 44,76 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA110 IXYS Integrated Circuits 1: 87,73 kr. 485On Order	Mfr. Part No. PAA110 Mouser Part No 849-PAA110	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	485On Order On Order Ship Dates Mfr. No: PAA110 Stock: 0 On Order: 85 Expected 13/01/2027 400 Expected 17/05/2027 Factory Lead Time: 35 Weeks	87,73 kr. 78,18 kr. 74,67 kr. 72,14 kr. View 63,04 kr. 58,26 kr.	Min.: 1 Mult.: 1	PCB Mount	DIP-8		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR PAA150 IXYS Integrated Circuits 1: 91,24 kr. 192On Order	Mfr. Part No. PAA150 Mouser Part No 849-PAA150	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	192On Order On Order Ship Dates Mfr. No: PAA150 Stock: 0 On Order: 92 Expected 24/05/2027 100 Expected 19/07/2027 Factory Lead Time: 36 Weeks	91,24 kr. 81,16 kr. 77,29 kr. 73,18 kr. 70,72 kr.	Min.: 1 Mult.: 1	PCB Mount	DIP-8		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA191S IXYS Integrated Circuits 1: 93,92 kr. 712Expected 17/03/2027	Mfr. Part No. PAA191S Mouser Part No 849-PAA191S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	712Expected 17/03/2027	93,92 kr. 83,70 kr. 79,97 kr. 77,06 kr. View 74,45 kr. 71,02 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192S IXYS Integrated Circuits 1: 45,43 kr. 1.825On Order	Mfr. Part No. PLA192S Mouser Part No 849-PLA192S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.825On Order On Order Ship Dates Mfr. No: PLA192S Stock: 0 On Order: 875 Expected 23/11/2026 500 Expected 07/12/2026 450 Expected 16/04/2027 Factory Lead Time: 35 Weeks	45,43 kr. 40,51 kr. 38,72 kr. 37,37 kr. View 36,03 kr. 34,47 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192STR IXYS Integrated Circuits 1: 44,91 kr. 34In Stock 2.000Expected 26/07/2027	Mfr. Part No. PLA192STR Mouser Part No 849-PLA192STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	34In Stock 2.000Expected 26/07/2027	Cut Tape 44,91 kr. 41,03 kr. 37,82 kr. 36,18 kr. View Reel 30,66 kr. 34,61 kr. 32,82 kr. 31,71 kr. 30,66 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009NTR IXYS Integrated Circuits 1: 19,32 kr. 7.741On Order End of Life	Mfr. Part No. CPC1009NTR Mouser Part No 849-CPC1009NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7.741On Order On Order Ship Dates Mfr. No: CPC1009NTR Stock: 0 On Order: 5.741 Expected 24/05/2027 2.000 Expected 02/08/2027 Factory Lead Time: 36 Weeks	Cut Tape 19,32 kr. 17,61 kr. 16,26 kr. 15,74 kr. View Reel 12,61 kr. 15,22 kr. 14,55 kr. 13,95 kr. 12,61 kr. 12,61 kr. MouseReel Available	Min.: 1 Mult.: 1 : 2.000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1030N IXYS Integrated Circuits 1: 25,29 kr. 1.817Expected 19/04/2027 End of Life	Mfr. Part No. CPC1030N Mouser Part No 849-CPC1030N 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	1.817Expected 19/04/2027	25,29 kr. 22,53 kr. 21,56 kr. 20,74 kr. View 19,92 kr. 18,95 kr. 18,43 kr. 17,75 kr.	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GR IXYS Integrated Circuits 1: 29,32 kr. 600Expected 02/12/2026 End of Life	Mfr. Part No. CPC1390GR Mouser Part No 849-CPC1390GR 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	600Expected 02/12/2026	29,32 kr. 26,41 kr. 24,69 kr. 23,65 kr. View 22,68 kr. 21,71 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394G IXYS Integrated Circuits 1: 31,71 kr. 500Expected 28/12/2026 End of Life	Mfr. Part No. CPC1394G Mouser Part No 849-CPC1394G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	500Expected 28/12/2026	31,71 kr. 29,69 kr. 26,41 kr. 25,07 kr. View 23,95 kr. 22,83 kr. 22,08 kr.	Min.: 1 Mult.: 1	PCB Mount	DIP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GS IXYS Integrated Circuits 1: 44,54 kr. 2.502On Order End of Life	Mfr. Part No. CPC1510GS Mouser Part No 849-CPC1510GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2.502On Order On Order Ship Dates Mfr. No: CPC1510GS Stock: 0 On Order: 1.752 Expected 23/11/2026 750 Expected 29/12/2027 Factory Lead Time: 61 Weeks	44,54 kr. 39,09 kr. 37,23 kr. 35,96 kr. View 34,69 kr. 33,12 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1563GS IXYS Integrated Circuits 1: 42,82 kr. 1.100Expected 10/12/2026 End of Life	Mfr. Part No. CPC1563GS Mouser Part No 849-CPC1563GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.100Expected 10/12/2026	42,82 kr. 39,17 kr. 36,03 kr. 34,17 kr. View 32,97 kr. 31,41 kr.	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP CPC1593G IXYS Integrated Circuits 1: 41,85 kr. 499Expected 03/11/2027 End of Life	Mfr. Part No. CPC1593G Mouser Part No 849-CPC1593G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	499Expected 03/11/2027	41,85 kr. 37,30 kr. 35,58 kr. 34,32 kr. View 33,20 kr. 29,24 kr.	Min.: 1 Mult.: 1	PCB Mount	DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R CPC1593GSTR IXYS Integrated Circuits 1: 39,99 kr. 1.742Expected 04/11/2027 End of Life	Mfr. Part No. CPC1593GSTR Mouser Part No 849-CPC1593GSTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.742Expected 04/11/2027	Cut Tape 39,99 kr. 35,58 kr. 34,02 kr. 32,82 kr. Reel 28,65 kr. View 31,78 kr. 30,21 kr. 29,54 kr. 28,50 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SIP CPC1906Y IXYS Integrated Circuits 1: 83,48 kr. 289Expected 23/07/2027 End of Life	Mfr. Part No. CPC1906Y Mouser Part No 849-CPC1906Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 4PIN SIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	289Expected 23/07/2027	83,48 kr. 74,23 kr. 70,50 kr. 66,77 kr. View 63,56 kr. 60,72 kr.	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET

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

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