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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 Dual 1-Form-A 250V 250mA SSR PAA150S IXYS Integrated Circuits 1: 12,50 € 267In Stock	Mfr. Part No. PAA150S Mouser Part No 849-PAA150S	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	267In Stock	12,50 € 11,11 € 10,56 € 10,00 € View 9,44 € 8,98 € 8,67 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA PLA150 IXYS Integrated Circuits 1: 7,48 € 835In Stock	Mfr. Part No. PLA150 Mouser Part No 849-PLA150	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	835In Stock	7,48 € 6,67 € 6,37 € 5,65 € View 5,40 € 5,15 € 4,85 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA PLA150STR IXYS Integrated Circuits 1: 7,78 € 1.089In Stock	Mfr. Part No. PLA150STR Mouser Part No 849-PLA150STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.089In Stock	Cut Tape 7,78 € 7,34 € Reel 5,19 € 4,61 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA PLA160STR IXYS Integrated Circuits 1: 7,53 € 754In Stock	Mfr. Part No. PLA160STR Mouser Part No 849-PLA160STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	754In Stock	Cut Tape 7,53 € 6,72 € 6,40 € 6,08 € View Reel 4,97 € 5,76 € 5,34 € 5,16 € 4,97 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR PLA171P IXYS Integrated Circuits 1: 6,15 € 971In Stock	Mfr. Part No. PLA171P Mouser Part No 849-PLA171P	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	971In Stock	6,15 € 5,64 € 5,43 € 5,23 € View 5,05 € 4,94 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay PLA172PTR IXYS Integrated Circuits 1: 8,33 € 429In Stock	Mfr. Part No. PLA172PTR Mouser Part No 849-PLA172PTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay Learn More about IXYS Integrated Circuits ixys pla172p relays	Datasheet	429In Stock	Cut Tape 8,33 € 7,43 € 7,10 € 6,85 € Reel 5,85 € View 6,62 € 6,29 € 6,07 € 5,77 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA191S IXYS Integrated Circuits 1: 8,18 € 731In Stock	Mfr. Part No. PLA191S Mouser Part No 849-PLA191S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	731In Stock	8,18 € 7,28 € 7,05 € 6,68 € View 6,20 € 5,93 € Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA193STR IXYS Integrated Circuits 1: 5,60 € 1.719In Stock 2.000Expected 13/11/2026	Mfr. Part No. PLA193STR Mouser Part No 849-PLA193STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1.719In Stock 2.000Expected 13/11/2026	Cut Tape 5,60 € 5,39 € Reel 3,81 € 3,59 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 600V, 1A AC Solid State Relay IXYS Integrated Circuits CPC1965G CPC1965G IXYS Integrated Circuits 1: 7,28 € 11.365In 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	11.365In Stock 10.775Expected 26/08/2027	7,28 € 6,49 € 5,85 € 5,64 € View 5,44 € 5,03 € 4,89 € 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: 1,65 € 5.169In Stock 136.000On 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	5.169In Stock 136.000On Order On Order Ship Dates Mfr. No: CPC1017NTR Stock: 5.169 Can Dispatch Immediately On Order: 68.000 Expected 02/12/2026 68.000 Expected 17/06/2027 Factory Lead Time: 30 Weeks	Cut Tape 1,65 € 1,52 € 1,40 € 1,36 € View Reel 1,17 € 1,31 € 1,24 € 1,20 € 1,17 € 1,17 € 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 € 4.936In 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	4.936In 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 350V 120mA Single OptoMOS Relay CPC1330G IXYS Integrated Circuits 1: 3,35 € 439In Stock End of Life	Mfr. Part No. CPC1330G Mouser Part No 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	3,35 € 3,15 € 2,80 € 2,67 € View 2,57 € 2,45 € 2,37 € 2,29 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330GR IXYS Integrated Circuits 1: 3,35 € 1.570In Stock 500Expected 13/01/2027 End of Life	Mfr. Part No. CPC1330GR Mouser Part No 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 13/01/2027	3,35 € 3,15 € 2,80 € 2,67 € View 2,57 € 2,45 € 2,37 € 2,29 €	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: 3,64 € 2.527In Stock 5.000On Order 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	2.527In Stock 5.000On Order On Order Ship Dates Mfr. No: CPC1394GRTR Stock: 2.527 Can Dispatch Immediately On Order: 2.000 Expected 02/11/2026 3.000 Expected 30/07/2027 Factory Lead Time: 36 Weeks	Cut Tape 3,64 € 3,33 € 3,21 € 3,08 € View Reel 2,73 € 2,93 € 2,84 € 2,73 € 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 2.950On Order 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 2.950On Order On Order Ship Dates Mfr. No: CPC1540GS Stock: 448 Can Dispatch Immediately On Order: 950 Expected 07/12/2026 2.000 Expected 01/03/2027 Factory Lead Time: 54 Weeks	5,31 € 4,98 € 4,43 € 4,21 € View 3,98 € 3,78 € 3,66 €	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: 7,07 € 355In 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	355In Stock 2.925On Order On Order Ship Dates Mfr. No: CPC1981Y Stock: 355 Can Dispatch Immediately On Order: 1.500 Expected 08/02/2027 1.425 Expected 12/02/2027 Factory Lead Time: 54 Weeks	7,07 € 6,47 € 5,94 € 5,68 € View 5,44 € 4,75 €	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 120MA DPST 8-DIP LAA110 IXYS Integrated Circuits 1: 8,29 € 2.075In 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	2.075In Stock 5.400On Order On Order Ship Dates Mfr. No: LAA110 Stock: 2.075 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 5,93 € 5,72 € 5,56 € 5,48 €	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 7,00 € 7,87 € 7,51 € 7,25 € 7,00 € Quote MouseReel Available	Min.: 1 Mult.: 1 : 1.000