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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GRTR IXYS Integrated Circuits 1: HK$34.20 9,676In Stock End of Life	Mfr. Part No. CPC1390GRTR Mouser Part No 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 HK$34.20 HK$30.58 HK$29.18 HK$28.11 Reel HK$24.74 View HK$27.04 HK$25.81 HK$24.91 HK$24.00 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1988J IXYS Integrated Circuits 1: HK$332.09 583In Stock End of Life	Mfr. Part No. CPC1988J Mouser Part No 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	HK$332.09 HK$318.69 HK$304.22 HK$293.78 View HK$283.67 HK$269.45 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110STR IXYS Integrated Circuits 1: HK$72.17 9,758In Stock End of Life	Mfr. Part No. LAA110STR Mouser Part No 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	9,758In Stock	Cut Tape HK$72.17 HK$64.28 HK$61.40 HK$59.27 View Reel HK$39.78 HK$57.21 HK$54.25 HK$52.36 HK$39.78 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710S IXYS Integrated Circuits 1: HK$158.97 4,928In Stock End of Life	Mfr. Part No. LAA710S Mouser Part No 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	4,928In Stock	HK$158.97 HK$141.63 HK$135.30 HK$130.53 View HK$126.09 HK$119.77 HK$115.08 Quote	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: HK$63.54 6,221In Stock 425Expected 8/1/2027	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	6,221In Stock 425Expected 8/1/2027	HK$63.54 HK$52.28 HK$45.54 HK$42.58 View HK$41.10 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP AC Solid State Power Switch IXYS Integrated Circuits CPC1998J CPC1998J IXYS Integrated Circuits 1: HK$178.79 3,155In Stock 7,700Expected 15/4/2027	Mfr. Part No. CPC1998J Mouser Part No 849-CPC1998J	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP AC Solid State Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,155In Stock 7,700Expected 15/4/2027	HK$178.79 HK$162.35 HK$154.62 HK$147.88 View HK$142.86 HK$136.70 HK$133.25	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS CPC1004N IXYS Integrated Circuits 1: HK$30.09 6,600In Stock 9,000Expected 5/7/2027 End of Life	Mfr. Part No. CPC1004N Mouser Part No 849-CPC1004N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,600In Stock 9,000Expected 5/7/2027	HK$30.09 HK$26.88 HK$25.40 HK$24.50 View HK$23.76 HK$22.52 HK$21.87 HK$21.13	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006NTR IXYS Integrated Circuits 1: HK$17.59 30,057In Stock End of Life	Mfr. Part No. CPC1006NTR Mouser Part No 849-CPC1006NTR 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	30,057In Stock	Cut Tape HK$17.59 HK$16.93 HK$16.11 HK$15.54 Reel HK$12.49 View HK$14.96 HK$14.22 HK$13.81 HK$12.49 HK$12.00 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010N IXYS Integrated Circuits 1: HK$33.62 3,597In Stock End of Life	Mfr. Part No. CPC1010N Mouser Part No 849-CPC1010N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V, 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,597In Stock	HK$33.62 HK$30.00 HK$28.61 HK$27.45 View HK$26.39 HK$25.15 HK$24.00 HK$23.18 HK$23.02	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010NTR IXYS Integrated Circuits 1: HK$32.14 6,979In Stock 10,000Expected 6/7/2027 End of Life	Mfr. Part No. CPC1010NTR Mouser Part No 849-CPC1010NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V, 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,979In Stock 10,000Expected 6/7/2027	Cut Tape HK$32.14 HK$28.61 HK$27.37 HK$26.22 View Reel HK$22.44 HK$25.32 HK$24.17 HK$23.34 HK$22.52 HK$22.44 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount SPNO RELAY CPC1017N IXYS Integrated Circuits 1: HK$7.07 186,425In Stock 120,000Expected 22/2/2027 End of Life	Mfr. Part No. CPC1017N Mouser Part No 849-CPC1017N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPNO RELAY Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	186,425In Stock 120,000Expected 22/2/2027	HK$7.07 HK$6.32 HK$6.08 HK$4.86 View HK$4.67 HK$4.58 HK$4.36	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay CPC1017NTR IXYS Integrated Circuits 1: HK$16.85 18,497In Stock 211,788On 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	18,497In Stock 211,788On Order On Order Ship Dates Mfr. No: CPC1017NTR Stock: 18,497 Can Dispatch Immediately On Order: 63,788 Expected 13/11/2026 68,000 Expected 11/3/2027 80,000 Expected 25/5/2027 Factory Lead Time: 30 Weeks	Cut Tape HK$16.85 HK$15.04 HK$14.39 HK$13.89 View Reel HK$11.10 HK$13.40 HK$12.82 HK$12.33 HK$11.10 HK$11.10 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay CPC1019NTR IXYS Integrated Circuits 1: HK$32.14 60,687In Stock End of Life	Mfr. Part No. CPC1019NTR Mouser Part No 849-CPC1019NTR 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	60,687In Stock	Cut Tape HK$32.14 HK$28.61 HK$27.37 HK$26.30 View Reel HK$21.87 HK$25.40 HK$24.25 HK$23.43 HK$22.61 HK$21.87 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A CPC1020N IXYS Integrated Circuits 1: HK$55.24 34,042In Stock End of Life	Mfr. Part No. CPC1020N Mouser Part No 849-CPC1020N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	34,042In Stock	HK$55.24 HK$49.32 HK$46.61 HK$44.63 View HK$41.84 HK$39.54 HK$36.33	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay CPC1020NTR IXYS Integrated Circuits 1: HK$49.81 101,556In Stock End of Life	Mfr. Part No. CPC1020NTR Mouser Part No 849-CPC1020NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	101,556In Stock	Cut Tape HK$49.81 HK$44.39 HK$42.42 HK$40.94 View Reel HK$35.02 HK$39.54 HK$37.65 HK$36.33 HK$35.51 HK$35.02 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025N IXYS Integrated Circuits 1: HK$26.63 7,390In Stock 400Expected 25/12/2026 End of Life	Mfr. Part No. CPC1025N Mouser Part No 849-CPC1025N 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	7,390In Stock 400Expected 25/12/2026	HK$26.63 HK$23.76 HK$22.61 HK$21.87 View HK$20.96 HK$19.97 HK$19.32 HK$18.66	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025NTR IXYS Integrated Circuits 1: HK$25.48 64,106In Stock End of Life	Mfr. Part No. CPC1025NTR Mouser Part No 849-CPC1025NTR 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	64,106In Stock	Cut Tape HK$25.48 HK$22.69 HK$21.62 HK$20.88 Reel HK$16.44 View HK$20.14 HK$19.23 HK$18.58 HK$16.44 HK$16.36 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1230N IXYS Integrated Circuits 1: HK$30.91 1,328In Stock End of Life	Mfr. Part No. CPC1230N Mouser Part No 849-CPC1230N 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	1,328In Stock	HK$30.91 HK$28.19 HK$25.89 HK$24.58 View HK$23.76 HK$22.61 HK$21.95 HK$20.55 HK$19.89	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1708J IXYS Integrated Circuits 1: HK$158.48 492In Stock End of Life	Mfr. Part No. CPC1708J Mouser Part No 849-CPC1708J 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	492In Stock	HK$158.48 HK$141.22 HK$134.73 HK$130.12 View HK$125.68 HK$118.78 HK$114.67 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V Single Pole DC Power Relay CPC1726Y IXYS Integrated Circuits 1: HK$68.97 572In Stock End of Life	Mfr. Part No. CPC1726Y Mouser Part No 849-CPC1726Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V Single Pole DC Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	572In Stock	HK$68.97 HK$64.61 HK$57.46 HK$54.58 View HK$51.70 HK$48.25 HK$46.61 HK$44.96	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1727J IXYS Integrated Circuits 1: HK$188.98 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	HK$188.98 HK$180.84 HK$153.63 HK$134.40 Quote Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay CPC1907B IXYS Integrated Circuits 1: HK$98.80 9,828In Stock 17,625Expected 12/2/2027 End of Life	Mfr. Part No. CPC1907B Mouser Part No 849-CPC1907B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9,828In Stock 17,625Expected 12/2/2027	HK$98.80 HK$87.95 HK$83.68 HK$80.06 View HK$76.77 HK$73.32 HK$70.77 HK$68.39 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: HK$372.94 1,296In Stock End of Life	Mfr. Part No. CPC1968J Mouser Part No 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	HK$372.94 HK$349.10 HK$317.13	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LSTR IXYS Integrated Circuits 1: HK$73.82 698In Stock End of Life	Mfr. Part No. LAA110LSTR Mouser Part No 849-LAA110LSTR 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	698In Stock	Cut Tape HK$73.82 HK$65.84 HK$62.88 HK$60.66 Reel HK$51.70 View HK$58.61 HK$55.49 HK$53.59 HK$48.74 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110L IXYS Integrated Circuits 1: HK$36.00 1,116In Stock End of Life	Mfr. Part No. LCA110L Mouser Part No 849-LCA110L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,116In Stock	HK$36.00 HK$33.54 HK$32.06 HK$30.99 View HK$29.92 HK$27.95 HK$26.72 HK$26.14 HK$23.59	Min.: 1 Mult.: 1