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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 Single Pole 1-Form-A, 250V,250mA PLA171PTR IXYS Integrated Circuits 1: Rp138.329 132In Stock 1.000Expected 28/06/2027	Mfr. Part No. PLA171PTR Mouser Part No 849-PLA171PTR	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	132In Stock 1.000Expected 28/06/2027	Cut Tape Rp138.329 Rp126.404 Rp117.231 Rp113.195 View Reel Rp93.198 Rp109.342 Rp100.720 Rp97.234 Rp93.198 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay PLA172PTR IXYS Integrated Circuits 1: Rp177.773 79In 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	79In Stock	Cut Tape Rp177.773 Rp158.509 Rp151.355 Rp146.218 View Reel Rp123.285 Rp141.264 Rp134.109 Rp129.523 Rp123.285 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA191 IXYS Integrated Circuits 1: Rp173.370 24In Stock	Mfr. Part No. PLA191 Mouser Part No 849-PLA191	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	24In Stock	Rp173.370 Rp154.657 Rp148.970 Rp145.117 View Rp128.789 Rp127.138 Rp126.220 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192STR IXYS Integrated Circuits 1: Rp132.091 34In Stock 2.000Expected 26/07/2027	Mfr. Part No. PLA192STR Mouser Part No 849-PLA192STR	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	34In Stock 2.000Expected 26/07/2027	Cut Tape Rp132.091 Rp120.717 Rp112.094 Rp106.407 View Reel Rp87.694 Rp101.820 Rp96.683 Rp93.381 Rp87.694 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA193 IXYS Integrated Circuits 1: Rp117.965 51In Stock	Mfr. Part No. PLA193 Mouser Part No 849-PLA193	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	51In Stock	Rp117.965 Rp105.123 Rp104.389 Rp99.068 View Rp93.381 Rp84.025 Rp82.007 Rp80.539	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay CPC1008NTR IXYS Integrated Circuits 1: Rp55.588 80In Stock 90.000On Order End of Life	Mfr. Part No. CPC1008NTR Mouser Part No 849-CPC1008NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	80In Stock 90.000On Order On Order Ship Dates Mfr. No: CPC1008NTR Stock: 80 Can Dispatch Immediately On Order: 38.000 Expected 30/11/2026 52.000 Expected 18/02/2027 Factory Lead Time: 31 Weeks	Cut Tape Rp55.588 Rp51.185 Rp47.516 Rp45.865 View Reel Rp36.692 Rp44.214 Rp42.196 Rp40.728 Rp36.692 Rp36.692 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009N IXYS Integrated Circuits 1: Rp61.826 204In Stock 7.900On Order End of Life	Mfr. Part No. CPC1009N Mouser Part No 849-CPC1009N 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	204In Stock 7.900On Order On Order Ship Dates Mfr. No: CPC1009N Stock: 204 Can Dispatch Immediately On Order: 5.000 Expected 15/02/2027 2.900 Expected 22/03/2027 Factory Lead Time: 36 Weeks	Rp61.826 Rp55.221 Rp52.653 Rp50.818 View Rp49.167 Rp44.948 Rp42.563	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay CPC1014NTR IXYS Integrated Circuits 1: Rp55.955 80In Stock 86.000On Order End of Life	Mfr. Part No. CPC1014NTR Mouser Part No 849-CPC1014NTR 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	80In Stock 86.000On Order On Order Ship Dates Mfr. No: CPC1014NTR Stock: 80 Can Dispatch Immediately On Order: 38.000 Expected 13/01/2027 48.000 Expected 22/04/2027 Factory Lead Time: 29 Weeks	Cut Tape Rp55.955 Rp51.185 Rp47.516 Rp46.415 View Reel Rp36.692 Rp43.847 Rp42.012 Rp40.545 Rp36.692 Rp36.692 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1018NTR IXYS Integrated Circuits 1: Rp92.280 48In Stock 22.000Expected 09/12/2026 End of Life	Mfr. Part No. CPC1018NTR Mouser Part No 849-CPC1018NTR 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	48In Stock 22.000Expected 09/12/2026	Cut Tape Rp92.280 Rp84.392 Rp77.604 Rp74.301 View Reel Rp61.643 Rp71.733 Rp68.431 Rp66.046 Rp63.844 Rp61.643 MouseReel Available	Min.: 1 Mult.: 1 : 2.000
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390G IXYS Integrated Circuits 1: Rp84.759 54In Stock 1.400On Order End of Life	Mfr. Part No. CPC1390G Mouser Part No 849-CPC1390G 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	54In Stock 1.400On Order On Order Ship Dates Mfr. No: CPC1390G Stock: 54 Can Dispatch Immediately On Order: 800 Expected 05/04/2027 600 Expected 09/08/2027 Factory Lead Time: 36 Weeks	Rp84.759 Rp76.686 Rp72.283 Rp69.715 View Rp62.927 Rp62.009	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay CPC1393GR IXYS Integrated Circuits 1: Rp90.629 8In Stock End of Life	Mfr. Part No. CPC1393GR Mouser Part No 849-CPC1393GR 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	8In Stock	Rp90.629 Rp84.942 Rp75.586 Rp71.733 View Rp68.431 Rp65.312 Rp63.110	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay CPC1393GRTR IXYS Integrated Circuits 1: Rp86.593 281In Stock 14.000On Order End of Life	Mfr. Part No. CPC1393GRTR Mouser Part No 849-CPC1393GRTR 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	281In Stock 14.000On Order On Order Ship Dates Mfr. No: CPC1393GRTR Stock: 281 Can Dispatch Immediately On Order: 8.000 Expected 01/02/2027 6.000 Expected 09/08/2027 Factory Lead Time: 36 Weeks	Cut Tape Rp86.593 Rp85.125 Rp83.291 Reel Rp58.891 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394GR IXYS Integrated Circuits 1: Rp87.144 2In Stock 600Expected 13/01/2027 End of Life	Mfr. Part No. CPC1394GR Mouser Part No 849-CPC1394GR 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	2In Stock 600Expected 13/01/2027	Rp87.144 Rp77.787 Rp74.301 Rp73.201 View Rp69.348 Rp65.495 Rp63.844	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510G IXYS Integrated Circuits 1: Rp129.156 9In Stock 1.050Expected 19/01/2028 End of Life	Mfr. Part No. CPC1510G Mouser Part No 849-CPC1510G 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	9In Stock 1.050Expected 19/01/2028	Rp129.156 Rp118.148 Rp108.792 Rp103.838 View Rp99.435 Rp88.244	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GSTR IXYS Integrated Circuits 1: Rp123.102 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	9.000Expected 06/01/2028	Cut Tape Rp123.102 Rp112.644 Rp103.655 Rp100.903 Reel Rp100.903 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1540GSTR IXYS Integrated Circuits 1: Rp108.608 9In Stock End of Life	Mfr. Part No. CPC1540GSTR Mouser Part No 849-CPC1540GSTR 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	9In Stock	Cut Tape Rp108.608 Rp97.050 Rp91.363 Rp87.510 Reel Rp74.301 View Rp83.841 Rp79.805 Rp77.053 Rp69.348	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1560GSTR IXYS Integrated Circuits 1: Rp145.117 10In Stock End of Life	Mfr. Part No. CPC1560GSTR Mouser Part No 849-CPC1560GSTR 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	10In Stock	Cut Tape Rp145.117 Rp135.944 Rp135.210 Reel Rp95.583 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount RELAY, SS ICS CPC1561BTR IXYS Integrated Circuits 1: Rp208.227 187In Stock 1.000Expected 06/07/2027 End of Life	Mfr. Part No. CPC1561BTR Mouser Part No 849-CPC1561BTR 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	187In Stock 1.000Expected 06/07/2027	Cut Tape Rp208.227 Rp195.201 Rp173.553 Rp164.931 View Reel Rp133.009 Rp156.124 Rp142.915 Rp137.962 Rp133.009 MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1709J IXYS Integrated Circuits 1: Rp338.117 13In Stock 9.850On Order End of Life	Mfr. Part No. CPC1709J Mouser Part No 849-CPC1709J 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	13In Stock 9.850On Order On Order Ship Dates Mfr. No: CPC1709J Stock: 13 Can Dispatch Immediately On Order: 6.750 Expected 31/05/2027 1.350 Expected 30/07/2027 1.750 Expected 02/08/2027 Factory Lead Time: 36 Weeks	Rp338.117 Rp300.691 Rp277.942 Rp268.402 Rp259.046	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1718J IXYS Integrated Circuits 1: Rp346.923 12In Stock End of Life	Mfr. Part No. CPC1718J Mouser Part No 849-CPC1718J 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	12In Stock	Rp346.923 Rp309.130 Rp295.004 Rp284.913 View Rp273.722 Rp259.779 Rp250.973 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1786J IXYS Integrated Circuits 1: Rp501.396 43In Stock 75Expected 10/02/2028 End of Life	Mfr. Part No. CPC1786J Mouser Part No 849-CPC1786J 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	43In Stock 75Expected 10/02/2028	Rp501.396 Rp467.456 Rp442.872 Rp418.289 View Rp397.741 Rp379.762 Rp366.737	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1788J IXYS Integrated Circuits 1: Rp545.794 8In Stock 525On Order End of Life	Mfr. Part No. CPC1788J Mouser Part No 849-CPC1788J 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	8In Stock 525On Order On Order Ship Dates Mfr. No: CPC1788J Stock: 8 Can Dispatch Immediately On Order: 225 Expected 05/04/2027 300 Expected 18/11/2027 Factory Lead Time: 51 Weeks	Rp545.794 Rp476.629 Rp455.164 Rp439.570	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay CPC1916Y IXYS Integrated Circuits 1: Rp248.221 16In Stock 1.400On Order End of Life	Mfr. Part No. CPC1916Y Mouser Part No 849-CPC1916Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	16In Stock 1.400On Order On Order Ship Dates Mfr. No: CPC1916Y Stock: 16 Can Dispatch Immediately On Order: 800 Expected 21/12/2026 600 Expected 31/12/2026 Factory Lead Time: 37 Weeks	Rp248.221 Rp216.850 Rp207.126 Rp199.971 Rp193.183	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch CPC1963G IXYS Integrated Circuits 1: Rp222.904 162In Stock End of Life	Mfr. Part No. CPC1963G Mouser Part No 849-CPC1963G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	162In Stock	Rp222.904 Rp198.504 Rp189.698 Rp182.910 View Rp176.305 Rp168.416 Rp156.858 Rp155.207 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay CPC1967J IXYS Integrated Circuits 1: Rp749.984 6In Stock 400On Order End of Life	Mfr. Part No. CPC1967J Mouser Part No 849-CPC1967J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6In Stock 400On Order On Order Ship Dates Mfr. No: CPC1967J Stock: 6 Can Dispatch Immediately On Order: 75 Expected 13/01/2027 325 Expected 14/06/2027 Factory Lead Time: 54 Weeks	Rp749.984 Rp664.125 Rp632.387 Rp603.767	Min.: 1 Mult.: 1