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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 8-Pin Power SOIC CPC1966B IXYS Integrated Circuits 1: 8,45 € 1.905In Stock 1.725Expected 3/24/2027	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 3/24/2027	8,45 € 7,53 € 7,18 € 6,93 € View 6,68 € 6,25 € 6,12 € 5,97 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount AC Switch 3A, 600V CPC1966Y IXYS Integrated Circuits 1: 7,40 € 374In Stock 7.650Expected 1/25/2027	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 1/25/2027	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 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	2.771In Stock 4.100Expected 1/8/2027	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 9/10/2027 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 9/10/2027	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 € 3.633In 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	3.633In Stock 216.000On Order On Order Ship Dates Mfr. No: CPC1017NTR Stock: 3.633 Can Dispatch Immediately On Order: 68.000 Expected 11/6/2026 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
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 6/2/2027 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 6/2/2027	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 1-Form-A 350V 120mA Solid State Relay CPC1230NTR IXYS Integrated Circuits 1: 2,99 € 2.149In 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	2.149In 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
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 2/17/2027 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 2/17/2027	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 SP, Normally-Open OptoMOS Relay CPC1540GS IXYS Integrated Circuits 1: 5,31 € 448In Stock 2.950Expected 4/19/2027 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 4/19/2027	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 € 2.345In 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	2.345In Stock 8.875On Order On Order Ship Dates Mfr. No: CPC1706Y Stock: 2.345 Can Dispatch Immediately On Order: 3.775 Expected 3/1/2027 5.100 Expected 4/12/2027 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 60V Single Pole 60V Power Relay CPC1909J IXYS Integrated Circuits 1: 18,07 € 479In Stock 325Expected 12/25/2026 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 12/25/2026	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 € 834In 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	834In Stock 2.925On Order On Order Ship Dates Mfr. No: CPC1981Y Stock: 834 Can Dispatch Immediately On Order: 1.425 Expected 2/12/2027 1.500 Expected 12/3/2027 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 7/15/2027 1.050 Expected 7/19/2027 1.550 Expected 7/23/2027 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 7/12/2027 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 7/12/2027	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 7/5/2027 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 7/5/2027	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 8/4/2027 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 8/4/2027	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