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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 (IDR) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1225NTR IXYS Integrated Circuits 1: Rp65.495,22 9.920Expected 12/08/2027 End of Life	Mfr. Part No. CPC1225NTR Mouser Part No 849-CPC1225NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9.920Expected 12/08/2027	Cut Tape Rp65.495,22 Rp64.761,38 Reel Rp44.213,86 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GSTR IXYS Integrated Circuits 1: Rp123.101,66 1.834In Stock 9.000Expected 06/01/2028 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	1.834In Stock 9.000Expected 06/01/2028	Cut Tape Rp123.101,66 Rp112.644,44 Rp103.654,90 Rp100.903,00 Reel Rp100.903,00 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1560GS IXYS Integrated Circuits 1: Rp153.372,56 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: 998 Expected 09/11/2026 1.000 Expected 08/12/2027 1.300 Expected 09/12/2027 Factory Lead Time: 66 Weeks	Rp153.372,56 Rp143.832,64 Rp127.871,62 Rp121.450,52 View Rp115.029,42 Rp107.324,10	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1978J IXYS Integrated Circuits 1: Rp467.456,08 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: 535 Expected 13/01/2027 325 Expected 31/03/2027 Factory Lead Time: 54 Weeks	Rp467.456,08 Rp429.663,32 Rp407.097,74 Rp384.532,16	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST iso PLUS-264 CPC1979J IXYS Integrated Circuits 1: Rp737.876,12 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: 5.809 Expected 10/12/2027 225 Expected 16/12/2027 Factory Lead Time: 73 Weeks	Rp737.876,12 Rp659.905,62 Rp628.900,88 Rp605.968,38	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation CPC1983Y IXYS Integrated Circuits 1: Rp196.852,58 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: 5.510 Expected 29/07/2027 1.925 Expected 05/08/2027 Factory Lead Time: 40 Weeks	Rp196.852,58 Rp180.341,18 Rp165.664,38 Rp158.509,44 View Rp149.152,98 Rp142.364,96	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount RELAY, SS ICS CPC1983YE IXYS Integrated Circuits 1: Rp200.888,70 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 29/01/2027 Factory Lead Time: 37 Weeks	Rp200.888,70 Rp186.945,74 Rp170.984,72 Rp165.114,00 View Rp159.426,74 Rp152.271,80	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108STR IXYS Integrated Circuits 1: Rp97.600,72 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 Rp97.600,72 Rp88.244,26 Rp81.456,24 Rp77.236,66 View Reel Rp64.027,54 Rp73.567,46 Rp70.265,18 Rp67.880,20 Rp64.027,54 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out CPC1976YX6 IXYS Integrated Circuits 1: Rp194.467,60 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	Rp194.467,60 Rp158.692,90 Rp137.411,54 Rp128.605,46 View Rp124.202,42 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A SSR LCA701 IXYS Integrated Circuits 1: Rp217.950,48 707On Order	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	707On Order On Order Ship Dates Mfr. No: LCA701 Stock: 0 On Order: 107 Expected 16/11/2026 600 Expected 15/07/2027 Factory Lead Time: 36 Weeks	Rp217.950,48 Rp191.532,24 Rp182.542,70 Rp174.470,46 View Rp166.398,22 Rp148.969,52	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A LCA710R IXYS Integrated Circuits 1: Rp183.276,54 946Expected 02/12/2026	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 02/12/2026	Rp183.276,54 Rp172.452,40 Rp154.473,32 Rp146.951,46 View Rp140.897,28 Rp134.476,18	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712STR IXYS Integrated Circuits 1: Rp206.209,04 1.300Expected 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	1.300Expected 21/01/2027	Cut Tape Rp206.209,04 Rp183.826,92 Rp175.571,22 Rp169.150,12 View Reel Rp137.595,00 Rp161.995,18 Rp151.354,50 Rp146.217,62 Rp137.595,00 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA110 IXYS Integrated Circuits 1: Rp262.531,26 435On 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	435On Order On Order Ship Dates Mfr. No: PAA110 Stock: 0 On Order: 35 Expected 13/01/2027 400 Expected 17/05/2027 Factory Lead Time: 35 Weeks	Rp262.531,26 Rp233.361,12 Rp221.803,14 Rp206.209,04 Rp199.054,10	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR PAA150 IXYS Integrated Circuits 1: Rp260.880,12 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	Rp260.880,12 Rp232.076,90 Rp221.069,30 Rp209.327,86 Rp202.172,92	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA191S IXYS Integrated Circuits 1: Rp268.585,44 712Expected 08/02/2027	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 08/02/2027	Rp268.585,44 Rp239.415,30 Rp228.591,16 Rp220.335,46 View Rp212.813,60 Rp203.090,22	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA110STR IXYS Integrated Circuits 1: Rp135.393,48 2.996Expected 08/02/2027	Mfr. Part No. PLA110STR Mouser Part No 849-PLA110STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2.996Expected 08/02/2027	Cut Tape Rp135.393,48 Rp132.641,58 Reel Rp93.748,06 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192S IXYS Integrated Circuits 1: Rp129.889,68 1.825Expected 08/02/2027	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	1.825Expected 08/02/2027	Rp129.889,68 Rp115.763,26 Rp110.626,38 Rp106.773,72 View Rp103.104,52 Rp98.518,02	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009NTR IXYS Integrated Circuits 1: Rp55.588,38 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 Rp55.588,38 Rp50.634,96 Rp46.598,84 Rp45.131,16 View Reel Rp35.958,16 Rp43.663,48 Rp41.828,88 Rp39.994,28 Rp35.958,16 Rp35.958,16 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1030N IXYS Integrated Circuits 1: Rp72.283,24 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	Rp72.283,24 Rp64.394,46 Rp61.642,56 Rp59.257,58 View Rp57.056,06 Rp54.120,70 Rp52.653,02 Rp50.818,42	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1030NTR IXYS Integrated Circuits 1: Rp69.898,26 50In Stock 4.000Expected 08/03/2027 End of Life	Mfr. Part No. CPC1030NTR Mouser Part No 849-CPC1030NTR 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	50In Stock 4.000Expected 08/03/2027	Cut Tape Rp69.898,26 Rp64.027,54 Rp58.890,66 Rp56.872,60 View Reel Rp47.699,60 Rp54.671,08 Rp52.102,64 Rp50.451,50 Rp48.616,90 Rp47.699,60 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GR IXYS Integrated Circuits 1: Rp83.841,22 600On Order 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	600On Order On Order Ship Dates Mfr. No: CPC1390GR Stock: 0 On Order: 500 Expected 04/11/2026 100 Expected 02/12/2026 Factory Lead Time: 36 Weeks	Rp83.841,22 Rp75.585,52 Rp70.632,10 Rp67.696,74 View Rp64.944,84 Rp62.009,48	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394G IXYS Integrated Circuits 1: Rp91.730,00 500Expected 03/02/2027 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 03/02/2027	Rp91.730,00 Rp83.841,22 Rp78.704,34 Rp75.952,44 View Rp73.384,00 Rp69.531,34 Rp67.696,74	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GS IXYS Integrated Circuits 1: Rp127.321,24 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 14/01/2027 750 Expected 26/04/2027 Factory Lead Time: 54 Weeks	Rp127.321,24 Rp111.727,14 Rp106.406,80 Rp102.737,60 View Rp99.251,86 Rp94.665,36	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1563GS IXYS Integrated Circuits 1: Rp122.551,28 1.100Expected 15/04/2027 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 15/04/2027	Rp122.551,28 Rp112.094,06 Rp103.104,52 Rp97.600,72 View Rp94.298,44 Rp89.895,40	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP CPC1593G IXYS Integrated Circuits 1: Rp119.615,92 499Expected 01/02/2027 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 01/02/2027	Rp119.615,92 Rp106.590,26 Rp101.820,30 Rp98.151,10 View Rp94.848,82 Rp83.657,76	Min.: 1 Mult.: 1