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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.
Solid State Relays - PCB Mount AC Switch 3A, 600V CPC1966Y IXYS Integrated Circuits 1: €7.40 374In 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	374In Stock 7,650Expected 23/11/2026	€7.40 €6.59 €6.10 €5.91 €5.67	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: €6.65 2,771In Stock 4,100Expected 08/01/2027	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	2,771In Stock 4,100Expected 08/01/2027	€6.65 €5.47 €4.76 €4.47	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V, 1A AC Solid State Relay IXYS Integrated Circuits CPC1965G CPC1965G IXYS Integrated Circuits 1: €7.28 11,329In Stock 10,775Expected 26/08/2027 End of Life	Mfr. Part No. CPC1965G Mouser Part No 849-CPC1965G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V, 1A AC Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	11,329In Stock 10,775Expected 26/08/2027	€7.28 €6.49 €5.84 €5.63 View €5.43 €5.02 €4.93 €4.82 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay CPC1017NTR IXYS Integrated Circuits 1: €1.76 3,781In Stock 216,000On 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	3,781In Stock 216,000On Order On Order Ship Dates Mfr. No: CPC1017NTR Stock: 3,781 Can Dispatch Immediately On Order: 68,000 Expected 06/11/2026 80,000 Expected 25/05/2027 68,000 Expected 17/06/2027 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
Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay CPC1019N IXYS Integrated Circuits 1: €3.67 4,926In Stock 4,100Expected 02/06/2027 End of Life	Mfr. Part No. CPC1019N Mouser Part No 849-CPC1019N 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	4,926In Stock 4,100Expected 02/06/2027	€3.67 €3.31 €3.10 €2.96 View €2.85 €2.71 €2.62 €2.54 €2.53	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay CPC1393G IXYS Integrated Circuits 1: €4.09 1,005In Stock End of Life	Mfr. Part No. CPC1393G Mouser Part No 849-CPC1393G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,005In Stock	€4.09 €3.65 €3.48 €3.36 View €3.23 €3.06 €2.99 €2.86 €2.73	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394GRTR IXYS Integrated Circuits 1: €3.60 3,657In Stock 3,000Expected 30/07/2027 End of Life	Mfr. Part No. CPC1394GRTR Mouser Part No 849-CPC1394GRTR 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	3,657In Stock 3,000Expected 30/07/2027	Cut Tape €3.60 €3.32 €3.21 €3.09 Reel €2.80 View €2.95 €2.88 €2.78 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GSTR IXYS Integrated Circuits 1: €5.77 12,166On Order End of Life	Mfr. Part No. CPC1510GSTR Mouser Part No 849-CPC1510GSTR 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	12,166On Order On Order Ship Dates Mfr. No: CPC1510GSTR Stock: 0 On Order: 7,166 Expected 06/01/2028 5,000 TBD Factory Lead Time: 73 Weeks	Cut Tape €5.77 €5.28 €4.86 €4.73 Reel €4.73 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1540GS IXYS Integrated Circuits 1: €5.31 448In Stock 2,950Expected 19/04/2027 End of Life	Mfr. Part No. CPC1540GS Mouser Part No 849-CPC1540GS 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	448In Stock 2,950Expected 19/04/2027	€5.31 €4.98 €4.43 €4.21 View €3.98 €3.78 €3.66	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation CPC1706Y IXYS Integrated Circuits 1: €6.34 985In Stock 8,875On Order End of Life	Mfr. Part No. CPC1706Y Mouser Part No 849-CPC1706Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	985In Stock 8,875On Order On Order Ship Dates Mfr. No: CPC1706Y Stock: 985 Can Dispatch Immediately On Order: 5,100 Expected 10/05/2027 3,775 Expected 23/07/2027 Factory Lead Time: 39 Weeks	€6.34 €5.80 €5.38 €5.19 View €5.02 €4.79	Min.: 1 Mult.: 1
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
Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay CPC1909J IXYS Integrated Circuits 1: €18.07 479In Stock 325Expected 23/07/2027 End of Life	Mfr. Part No. CPC1909J Mouser Part No 849-CPC1909J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V Single Pole 60V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	479In Stock 325Expected 23/07/2027	€18.07 €16.62 €15.74 €14.87 View €14.33 €13.68 €13.21	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 400V, 1mA AC Solid State Relay CPC1945G IXYS Integrated Circuits 1: €8.20 105In Stock End of Life	Mfr. Part No. CPC1945G Mouser Part No 849-CPC1945G End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 400V, 1mA AC Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	105In Stock	€8.20 €6.35 €5.13 €4.71 View €4.48 €4.38	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay CPC1981Y IXYS Integrated Circuits 1: €7.27 344In Stock 2,925On Order End of Life	Mfr. Part No. CPC1981Y Mouser Part No 849-CPC1981Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	344In Stock 2,925On Order On Order Ship Dates Mfr. No: CPC1981Y Stock: 344 Can Dispatch Immediately On Order: 1,500 Expected 08/02/2027 1,425 Expected 12/02/2027 Factory Lead Time: 54 Weeks	€7.27 €6.65 €6.14 €5.93 View €5.73 €5.47	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 120MA DPST 8-DIP LAA110 IXYS Integrated Circuits 1: €8.29 956In Stock 5,400On Order End of Life	Mfr. Part No. LAA110 Mouser Part No 849-LAA110 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 120MA DPST 8-DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	956In Stock 5,400On Order On Order Ship Dates Mfr. No: LAA110 Stock: 956 Can Dispatch Immediately On Order: 2,800 Expected 15/07/2027 1,050 Expected 19/07/2027 1,550 Expected 23/07/2027 Factory Lead Time: 36 Weeks	€8.29 €7.60 €6.97 €6.66 View €6.36 €5.99	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110L IXYS Integrated Circuits 1: €8.08 94In Stock End of Life	Mfr. Part No. LAA110L Mouser Part No 849-LAA110L 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	94In Stock	€8.08 €7.21 €6.88 €6.64 View €6.07 €5.82 €5.64 €5.51 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP LAA110S IXYS Integrated Circuits 1: €7.90 1,861In Stock 100Expected 12/07/2027 End of Life	Mfr. Part No. LAA110S Mouser Part No 849-LAA110S End of Life	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	1,861In Stock 100Expected 12/07/2027	€7.90 €7.04 €6.73 €6.48 View €6.26 €5.93 €5.91 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole LAA125LS IXYS Integrated Circuits 1: €9.12 83In Stock End of Life	Mfr. Part No. LAA125LS Mouser Part No 849-LAA125LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	83In Stock	€9.12 €8.55 €7.60 €7.22 View €6.84 €6.26 €6.05 €5.84	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127LS IXYS Integrated Circuits 1: €10.80 90In Stock End of Life	Mfr. Part No. LAA127LS Mouser Part No 849-LAA127LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	90In Stock	€10.80 €9.60 €9.12 €8.64 View €8.22 €7.85 €7.59 €7.32	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127STR IXYS Integrated Circuits 1: €9.94 442In Stock End of Life	Mfr. Part No. LAA127STR Mouser Part No 849-LAA127STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	442In Stock	Cut Tape €9.94 €8.86 €8.46 €8.17 View Reel €6.97 €7.84 €7.48 €7.23 €6.97 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA120 IXYS Integrated Circuits 1: €5.65 1,119In Stock 2,150Expected 05/07/2027 End of Life	Mfr. Part No. LCA120 Mouser Part No 849-LCA120 End of Life	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	1,119In Stock 2,150Expected 05/07/2027	€5.65 €5.30 €4.71 €4.47 View €4.24 €4.02 €3.88 €3.75	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120LS IXYS Integrated Circuits 1: €5.71 84In Stock End of Life	Mfr. Part No. LCA120LS Mouser Part No 849-LCA120LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	84In Stock	€5.71 €5.36 €4.76 €4.52 View €3.94 €3.85 €3.77 €3.70 €3.68	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN SMT LCA120S IXYS Integrated Circuits 1: €5.38 53In Stock End of Life	Mfr. Part No. LCA120S Mouser Part No 849-LCA120S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN SMT Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	53In Stock	€5.38 €4.80 €4.58 €4.42 View €4.03 €3.96 €3.89 €3.82 €3.80	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120STR IXYS Integrated Circuits 1: €5.19 1,433In Stock 2,000Expected 04/08/2027 End of Life	Mfr. Part No. LCA120STR Mouser Part No 849-LCA120STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,433In Stock 2,000Expected 04/08/2027	Cut Tape €5.19 €4.63 €4.42 €4.27 Reel €3.65 View €4.12 €3.92 €3.78 €3.53 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127 IXYS Integrated Circuits 1: €6.14 1,921In Stock End of Life	Mfr. Part No. LCA127 Mouser Part No 849-LCA127 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	1,921In Stock	€6.14 €5.47 €5.23 €5.04 View €4.87 €4.63 €4.47 €4.32	Min.: 1 Mult.: 1