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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 (ARS) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out CPC1966YX6 IXYS Integrated Circuits 1: $ 24.238,08 1.937In Stock	Mfr. Part # CPC1966YX6 Mouser Part # 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	1.937In Stock	$ 24.238,08 $ 21.593,29 $ 18.600,51 $ 17.956,71 View $ 17.330,31 $ 16.721,32 $ 16.373,32	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay CPC1016NTR IXYS Integrated Circuits 1: $ 5.237,37 22.193In Stock End of Life	Mfr. Part # CPC1016NTR Mouser Part # 849-CPC1016NTR 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	22.193In Stock	Cut Tape $ 5.237,37 $ 4.697,98 $ 4.436,98 $ 4.297,78 Reel $ 3.184,18 View $ 4.141,18 $ 3.949,78 $ 3.827,98 $ 3.184,18 $ 3.097,18 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1035N IXYS Integrated Circuits 1: $ 6.089,97 27.949In Stock End of Life	Mfr. Part # CPC1035N Mouser Part # 849-CPC1035N 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	27.949In Stock	$ 6.089,97 $ 4.993,78 $ 4.680,58 $ 4.280,38 View $ 4.175,98 $ 4.019,38 $ 3.740,98 $ 3.671,38	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710STR IXYS Integrated Circuits 1: $ 32.102,84 3.088In Stock End of Life	Mfr. Part # LAA710STR Mouser Part # 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 $ 32.102,84 $ 28.588,06 $ 27.300,47 $ 26.360,87 View Reel $ 21.001,70 $ 25.456,07 $ 24.272,88 $ 23.437,68 $ 21.001,70 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330GRTR IXYS Integrated Circuits 1: $ 6.333,57 10.703In Stock End of Life	Mfr. Part # CPC1330GRTR Mouser Part # 849-CPC1330GRTR 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	10.703In Stock	Cut Tape $ 6.333,57 $ 5.654,97 $ 5.393,97 $ 5.132,97 Reel $ 3.897,58 View $ 4.976,38 $ 4.750,18 $ 4.593,58 $ 3.827,98 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay CPC1918J IXYS Integrated Circuits 1: $ 38.488,61 6.942In Stock 7.550Expected 1/13/2027 End of Life	Mfr. Part # CPC1918J Mouser Part # 849-CPC1918J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6.942In Stock 7.550Expected 1/13/2027	$ 38.488,61 $ 34.573,63 $ 28.344,46 $ 27.526,66 View $ 26.935,07 $ 26.221,67 $ 25.682,27 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay CPC1968J IXYS Integrated Circuits 1: $ 78.943,41 1.296In Stock End of Life	Mfr. Part # CPC1968J Mouser Part # 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	$ 78.943,41 $ 73.897,43 $ 67.128,87	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST NO Relay CPC1018N IXYS Integrated Circuits 1: $ 8.960,96 40.982In Stock End of Life	Mfr. Part # CPC1018N Mouser Part # 849-CPC1018N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST NO Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	40.982In Stock	$ 8.960,96 $ 7.377,56 $ 6.907,77 $ 6.664,17 View $ 6.089,97 $ 5.915,97 $ 5.828,97 $ 5.794,17	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1777J IXYS Integrated Circuits 1: $ 36.331,02 186In Stock End of Life	Mfr. Part # CPC1777J Mouser Part # 849-CPC1777J 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	186In Stock	$ 36.331,02 $ 32.363,84 $ 28.135,66 $ 27.213,47 View $ 26.743,67 $ 26.430,47 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST i4-PAC 60V CPC1908J IXYS Integrated Circuits 1: $ 36.626,82 200In Stock End of Life	Mfr. Part # CPC1908J Mouser Part # 849-CPC1908J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST i4-PAC 60V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	200In Stock	$ 36.626,82 $ 32.642,24 $ 31.180,65 $ 30.101,85 View $ 26.430,47 $ 26.012,87 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST 1 Form A LAA127 IXYS Integrated Circuits 1: $ 16.982,32 611In Stock End of Life	Mfr. Part # LAA127 Mouser Part # 849-LAA127 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST 1 Form A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	611In Stock	$ 16.982,32 $ 15.712,12 $ 15.172,73 $ 14.789,93 View $ 14.250,53 $ 13.850,33 $ 12.092,94	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1986J IXYS Integrated Circuits 1: $ 64.379,68 160In Stock End of Life	Mfr. Part # CPC1986J Mouser Part # 849-CPC1986J 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	160In Stock	$ 64.379,68 $ 57.698,11 $ 57.593,72 $ 54.705,33 $ 48.197,76	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330GR IXYS Integrated Circuits 1: $ 5.324,37 1.570In Stock 500Expected 1/13/2027 End of Life	Mfr. Part # CPC1330GR Mouser Part # 849-CPC1330GR 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	1.570In Stock 500Expected 1/13/2027	$ 5.324,37 $ 5.011,18 $ 4.837,18 $ 4.697,98 View $ 4.558,78 $ 4.384,78 $ 4.141,18 $ 3.984,58 $ 3.914,98	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, NO ISOPLUS-264 CPC1927J IXYS Integrated Circuits 1: $ 47.084,17 204In Stock End of Life	Mfr. Part # CPC1927J Mouser Part # 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	204In Stock	$ 47.084,17 $ 45.170,18 $ 43.551,98 $ 42.177,39 View $ 38.314,61 $ 38.001,41 $ 37.984,01	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330G IXYS Integrated Circuits 1: $ 6.803,37 439In Stock End of Life	Mfr. Part # CPC1330G Mouser Part # 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	$ 6.803,37 $ 5.115,57 $ 5.063,37 $ 4.297,78	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD LCA125 IXYS Integrated Circuits 1: $ 12.423,54 160In Stock End of Life	Mfr. Part # LCA125 Mouser Part # 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	$ 12.423,54 $ 9.465,55 $ 9.065,36 $ 8.786,96 $ 8.752,16	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972G IXYS Integrated Circuits 1: $ 5.098,17 424In Stock End of Life	Mfr. Part # CPC1972G Mouser Part # 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	$ 5.098,17 $ 3.671,38 $ 3.462,58 $ 3.149,38 View $ 3.027,59 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006N IXYS Integrated Circuits 1: $ 2.192,39 117.504In Stock End of Life	Mfr. Part # CPC1006N Mouser Part # 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	117.504In Stock	$ 2.192,39 $ 1.966,19 $ 1.879,19 $ 1.809,59 View $ 1.734,77 $ 1.661,69 $ 1.432,01 $ 1.383,29 $ 1.299,77	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay CPC1014N IXYS Integrated Circuits 1: $ 5.533,17 193.019In Stock End of Life	Mfr. Part # CPC1014N Mouser Part # 849-CPC1014N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	193.019In Stock	$ 5.533,17 $ 4.924,18 $ 4.576,18 $ 4.419,58 View $ 4.262,98 $ 4.158,58 $ 4.054,18 $ 3.914,98 $ 3.897,58	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay CPC1035NTR IXYS Integrated Circuits 1: $ 5.811,57 8.583In Stock End of Life	Mfr. Part # CPC1035NTR Mouser Part # 849-CPC1035NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	8.583In Stock	Cut Tape $ 5.811,57 $ 5.185,17 $ 4.941,58 $ 4.715,38 View Reel $ 3.914,98 $ 4.576,18 $ 4.367,38 $ 4.210,78 $ 4.071,58 $ 3.914,98 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GRTR IXYS Integrated Circuits 1: $ 7.238,36 9.676In Stock End of Life	Mfr. Part # CPC1390GRTR Mouser Part # 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 $ 7.238,36 $ 6.472,77 $ 6.176,97 $ 5.950,77 Reel $ 5.237,37 View $ 5.724,57 $ 5.463,57 $ 5.272,17 $ 5.080,77 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1988J IXYS Integrated Circuits 1: $ 70.295,65 583In Stock End of Life	Mfr. Part # CPC1988J Mouser Part # 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	$ 70.295,65 $ 67.459,47 $ 64.397,08 $ 62.187,29 View $ 60.047,10 $ 57.036,92 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110STR IXYS Integrated Circuits 1: $ 15.277,12 7.758In Stock End of Life	Mfr. Part # LAA110STR Mouser Part # 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	7.758In Stock	Cut Tape $ 15.277,12 $ 13.606,73 $ 12.997,74 $ 12.562,74 Reel $ 10.074,55 View $ 12.127,74 $ 11.536,14 $ 11.135,94 $ 9.848,35 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710S IXYS Integrated Circuits 1: $ 33.651,43 4.888In Stock End of Life	Mfr. Part # LAA710S Mouser Part # 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	4.888In Stock	$ 33.651,43 $ 29.980,05 $ 28.640,26 $ 27.631,06 View $ 26.691,47 $ 25.351,67 $ 24.359,88 Quote	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: $ 13.450,13 6.189In Stock 425Expected 1/8/2027	Mfr. Part # CPC1976Y Mouser Part # 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	6.189In Stock 425Expected 1/8/2027	$ 13.450,13 $ 11.066,35 $ 9.639,55 $ 9.013,16 View $ 8.699,96 Quote	Min.: 1 Mult.: 1