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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 DPST-NO/NO 8PIN DIP PAA140 IXYS Integrated Circuits 1: HK$109.08 2,008In Stock	Mfr. Part No. PAA140 Mouser Part No 849-PAA140	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	2,008In Stock	HK$109.08 HK$99.46 HK$95.76 HK$92.31 View HK$88.61 HK$85.49 HK$83.35 HK$82.78	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay CPC1016NTR IXYS Integrated Circuits 1: HK$24.91 22,193In Stock End of Life	Mfr. Part No. CPC1016NTR Mouser Part No 849-CPC1016NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	22,193In Stock	Cut Tape HK$24.91 HK$22.28 HK$20.96 HK$20.30 Reel HK$15.62 View HK$19.56 HK$18.66 HK$18.08 HK$15.62 HK$15.04 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay CPC1014N IXYS Integrated Circuits 1: HK$26.14 203,845In Stock End of Life	Mfr. Part No. CPC1014N Mouser Part No 849-CPC1014N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	203,845In Stock	HK$26.14 HK$23.26 HK$21.62 HK$20.88 View HK$20.14 HK$19.65 HK$19.15 HK$18.50	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330GRTR IXYS Integrated Circuits 1: HK$29.92 11,703In Stock End of Life	Mfr. Part No. CPC1330GRTR Mouser Part No 849-CPC1330GRTR 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	11,703In Stock	Cut Tape HK$29.92 HK$26.72 HK$25.48 HK$24.25 Reel HK$19.15 View HK$23.51 HK$22.44 HK$21.70 HK$18.91 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay CPC1918J IXYS Integrated Circuits 1: HK$181.83 7,194In Stock 7,550Expected 13/1/2027 End of Life	Mfr. Part No. CPC1918J Mouser Part No 849-CPC1918J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7,194In Stock 7,550Expected 13/1/2027	HK$181.83 HK$163.58 HK$141.22 HK$136.04 View HK$132.51 HK$128.15 HK$124.94 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST NO Relay CPC1018N IXYS Integrated Circuits 1: HK$42.33 42,444In Stock End of Life	Mfr. Part No. CPC1018N Mouser Part No 849-CPC1018N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST NO Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	42,444In Stock	HK$42.33 HK$34.77 HK$32.47 HK$31.40 View HK$28.77 HK$27.87 HK$27.45 HK$26.96	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay CPC1035NTR IXYS Integrated Circuits 1: HK$27.45 9,013In Stock End of Life	Mfr. Part No. CPC1035NTR Mouser Part No 849-CPC1035NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9,013In Stock	Cut Tape HK$27.45 HK$24.50 HK$23.18 HK$22.28 View Reel HK$16.69 HK$21.54 HK$20.55 HK$19.89 HK$19.15 HK$16.69 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1035N IXYS Integrated Circuits 1: HK$28.77 27,969In Stock End of Life	Mfr. Part No. CPC1035N Mouser Part No 849-CPC1035N 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	27,969In Stock	HK$28.77 HK$23.02 HK$21.54 HK$19.40 View HK$18.91 HK$18.25 HK$17.67 HK$17.34 HK$17.26	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110STR IXYS Integrated Circuits 1: HK$72.17 9,858In 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	9,858In Stock	Cut Tape HK$72.17 HK$64.28 HK$61.40 HK$59.35 Reel HK$42.09 View HK$57.29 HK$54.25 HK$52.36 HK$42.00 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR PAA132STR IXYS Integrated Circuits 1: HK$132.10 1,188In Stock	Mfr. Part No. PAA132STR Mouser Part No 849-PAA132STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,188In Stock	Cut Tape HK$132.10 HK$117.46 HK$111.55 HK$105.71 View Reel HK$84.50 HK$99.79 HK$93.71 HK$90.50 HK$84.50 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA132 IXYS Integrated Circuits 1: HK$131.19 269In Stock	Mfr. Part No. PAA132 Mouser Part No 849-PAA132	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	269In Stock	HK$131.19 HK$116.89 HK$111.63 HK$95.19 HK$91.00	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA712 IXYS Integrated Circuits 1: HK$91.24 848In Stock	Mfr. Part No. LCA712 Mouser Part No 849-LCA712	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	848In Stock	HK$91.24 HK$81.30 HK$77.68 HK$66.58 HK$63.29	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110STR IXYS Integrated Circuits 1: HK$107.76 1,400In Stock	Mfr. Part No. PAA110STR Mouser Part No 849-PAA110STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,400In Stock	Cut Tape HK$107.76 HK$96.09 HK$91.74 HK$88.61 View Reel HK$73.98 HK$84.99 HK$80.80 HK$78.01 HK$73.98 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110S IXYS Integrated Circuits 1: HK$112.86 241In Stock	Mfr. Part No. PAA110S Mouser Part No 849-PAA110S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	241In Stock	HK$112.86 HK$100.53 HK$97.90 HK$80.56 View HK$79.90 HK$78.75 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR PAA132S IXYS Integrated Circuits 1: HK$131.19 1,240In Stock	Mfr. Part No. PAA132S Mouser Part No 849-PAA132S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,240In Stock	HK$131.19 HK$116.89 HK$111.63 HK$97.16 View HK$94.04 HK$88.53	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1777J IXYS Integrated Circuits 1: HK$171.63 186In Stock End of Life	Mfr. Part No. CPC1777J Mouser Part No 849-CPC1777J 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	186In Stock	HK$171.63 HK$152.89 HK$132.92 HK$128.56 View HK$126.34 HK$125.19 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST i4-PAC 60V CPC1908J IXYS Integrated Circuits 1: HK$173.20 200In Stock End of Life	Mfr. Part No. CPC1908J Mouser Part No 849-CPC1908J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST i4-PAC 60V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	200In Stock	HK$173.20 HK$154.37 HK$147.30 HK$142.21 View HK$128.48 HK$123.30	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST 1 Form A LAA127 IXYS Integrated Circuits 1: HK$86.97 611In Stock End of Life	Mfr. Part No. LAA127 Mouser Part No 849-LAA127 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST 1 Form A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	611In Stock	HK$86.97 HK$79.32 HK$76.20 HK$73.65 View HK$70.69 HK$68.39 HK$64.94	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, NO ISOPLUS-264 CPC1927J IXYS Integrated Circuits 1: HK$262.38 218In Stock End of Life	Mfr. Part No. CPC1927J Mouser Part No 849-CPC1927J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, NO ISOPLUS-264 Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	218In Stock	HK$262.38 HK$234.68 HK$224.00 HK$216.27 View HK$208.05 HK$183.39	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972GSTR IXYS Integrated Circuits 1: HK$23.02 3,553In Stock End of Life	Mfr. Part No. CPC1972GSTR Mouser Part No 849-CPC1972GSTR End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,553In Stock	Cut Tape HK$23.02 HK$18.91 HK$17.43 HK$15.95 Reel HK$14.30 View HK$14.06 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM CPC1593GS IXYS Integrated Circuits 1: HK$53.59 978In Stock End of Life	Mfr. Part No. CPC1593GS Mouser Part No 849-CPC1593GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	978In Stock	HK$53.59 HK$47.76 HK$45.62 HK$40.03 View HK$38.47 HK$36.99 HK$35.76 HK$35.18	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay CPC1330GR IXYS Integrated Circuits 1: HK$32.06 1,570In Stock 500Expected 13/1/2027 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 13/1/2027	HK$32.06 HK$30.09 HK$26.72 HK$25.48 View HK$24.58 HK$23.43 HK$22.69 HK$21.87	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010N IXYS Integrated Circuits 1: HK$33.62 3,837In 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	3,837In Stock	HK$33.62 HK$30.00 HK$28.61 HK$27.45 View HK$26.39 HK$25.15 HK$22.28 HK$21.70	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1986J IXYS Integrated Circuits 1: HK$304.14 160In Stock End of Life	Mfr. Part No. CPC1986J Mouser Part No 849-CPC1986J 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	160In Stock	HK$304.14 HK$272.58 HK$272.08 HK$258.44 HK$227.69	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA191 IXYS Integrated Circuits 1: HK$100.37 90In Stock	Mfr. Part No. PAA191 Mouser Part No 849-PAA191	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	90In Stock	HK$100.37 HK$92.06 HK$88.86 HK$85.82 View HK$79.90 HK$78.75 HK$77.84 HK$77.60 Quote	Min.: 1 Mult.: 1