Optocouplers / Photocouplers – Mouser Korea, Republic of

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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 (KRW) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Output Type
Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay CPC1983B IXYS Integrated Circuits 1: ₩16,234 150In Stock End of Life	Mfr. Part # CPC1983B Mouser Part # 849-CPC1983B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	150In Stock	₩16,234 ₩15,219.4 ₩13,514.2 ₩12,837.8 View ₩11,118.6 ₩10,709.9 ₩10,540.8 ₩10,442.2	Min.: 1 Mult.: 1	PCB Mount		MOSFET
Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP CPC1984Y IXYS Integrated Circuits 1: ₩24,435.5 13In Stock End of Life	Mfr. Part # CPC1984Y Mouser Part # 849-CPC1984Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	13In Stock	₩24,435.5 ₩21,772.1 ₩20,785.7 ₩20,067 View ₩19,334.2 ₩18,305.5 ₩17,671.4 Quote	Min.: 1 Mult.: 1	PCB Mount	SIP-4	MOSFET
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108 IXYS Integrated Circuits 1: ₩7,496.9 295In Stock End of Life	Mfr. Part # LAA108 Mouser Part # 849-LAA108 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	295In Stock	₩7,496.9 ₩6,693.7 ₩6,383.7 ₩6,158.2 View ₩5,918.6 ₩5,650.9 ₩5,453.6 ₩5,087.2 ₩5,059	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108S IXYS Integrated Circuits 1: ₩7,694.2 3In Stock End of Life	Mfr. Part # LAA108S Mouser Part # 849-LAA108S 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	3In Stock	₩7,694.2 ₩7,031.9 ₩6,482.3 ₩6,186.4 View ₩5,918.6 ₩5,650.9 ₩5,199.9	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LS IXYS Integrated Circuits 1: ₩12,570.1 6In Stock End of Life	Mfr. Part # LAA110LS Mouser Part # 849-LAA110LS 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	6In Stock	₩12,570.1 ₩11,555.4 ₩11,273.6 ₩9,286.6 View ₩8,737 ₩8,511.6	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120 IXYS Integrated Circuits 1: ₩13,739.7 156In Stock End of Life	Mfr. Part # LAA120 Mouser Part # 849-LAA120 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	156In Stock	₩13,739.7 ₩12,880.1 ₩11,795 ₩10,005.3 View ₩7,680.1 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120S IXYS Integrated Circuits 1: ₩13,401.5 3In Stock End of Life	Mfr. Part # LAA120S Mouser Part # 849-LAA120S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3In Stock	₩13,401.5 ₩11,950 ₩11,414.5 ₩10,935.4 View ₩9,469.8 ₩9,272.5 ₩9,089.3 ₩9,033 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount DUAL POLE LAA125 IXYS Integrated Circuits 1: ₩12,640.5 125In Stock End of Life	Mfr. Part # LAA125 Mouser Part # 849-LAA125 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount DUAL POLE Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	125In Stock	₩12,640.5 ₩11,273.6 ₩10,766.3 ₩10,385.8 View ₩10,287.2 ₩9,216.2 ₩9,075.2 ₩8,948.4 Quote	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole LAA125S IXYS Integrated Circuits 1: ₩12,640.5 62In Stock 100On Order End of Life	Mfr. Part # LAA125S Mouser Part # 849-LAA125S 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	62In Stock 100On Order	₩12,640.5 ₩11,442.7 ₩10,864.9 ₩9,300.7 View ₩8,948.4 ₩8,751.1 ₩8,567.9	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127S IXYS Integrated Circuits 1: ₩17,896.8 48In Stock End of Life	Mfr. Part # LAA127S Mouser Part # 849-LAA127S 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	48In Stock	₩17,896.8 ₩15,924 ₩15,177.1 ₩14,500.7 View ₩13,908.8 ₩12,682.8 ₩12,471.4 ₩12,260 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8	MOSFET
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP LAA710 IXYS Integrated Circuits 1: ₩29,184.5 11In Stock 1,200On Order End of Life	Mfr. Part # LAA710 Mouser Part # 849-LAA710 End of Life	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	11In Stock 1,200On Order On Order Ship Dates Mfr. #: LAA710 Stock: 11 Can Ship Immediately On Order: 550 Expected 11/20/2026 650 Expected 6/29/2027 Factory Lead-Time: 35 Weeks	₩29,184.5 ₩25,943.4 ₩23,491.4 ₩22,490.8 ₩21,631.2	Min.: 1 Mult.: 1	PCB Mount	DIP-8	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA110 IXYS Integrated Circuits 1: ₩6,820.5 907In Stock 17,250On Order End of Life	Mfr. Part # LCA110 Mouser Part # 849-LCA110 End of Life	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	907In Stock 17,250On Order On Order Ship Dates Mfr. #: LCA110 Stock: 907 Can Ship Immediately On Order: 9,350 Expected 2/19/2027 7,900 Expected 4/21/2027 Factory Lead-Time: 36 Weeks	₩6,820.5 ₩6,073.7 ₩5,805.9 ₩5,608.6 View ₩5,411.3 ₩5,171.8 ₩4,988.6	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN SMD LCA110S IXYS Integrated Circuits 1: ₩6,115.9 507In Stock 800Expected 4/9/2027 End of Life	Mfr. Part # LCA110S Mouser Part # 849-LCA110S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN SMD Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	507In Stock 800Expected 4/9/2027	₩6,115.9 ₩5,594.5 ₩5,143.6 ₩4,946.3 View ₩4,777.2 ₩4,551.7 ₩4,269.9	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127LS IXYS Integrated Circuits 1: ₩11,062.2 14In Stock End of Life	Mfr. Part # LCA127LS Mouser Part # 849-LCA127LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	14In Stock	₩11,062.2 ₩9,864.4 ₩9,371.2 ₩8,962.5 View ₩8,582 ₩7,680.1 ₩7,567.4 ₩7,468.8 Quote	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay CPC1002NTR IXYS Integrated Circuits 1: ₩3,847.1 203,903On Order End of Life	Mfr. Part # CPC1002NTR Mouser Part # 849-CPC1002NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	203,903On Order On Order Ship Dates Mfr. #: CPC1002NTR Stock: 0 On Order: 59,903 Expected 12/25/2026 64,000 Expected 1/20/2027 80,000 Expected 2/18/2027 Factory Lead-Time: 31 Weeks	Cut Tape ₩3,847.1 ₩3,833 ₩2,536.6 Reel ₩2,536.6 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay CPC1004NTR IXYS Integrated Circuits 1: ₩5,030.8 6,890On Order End of Life	Mfr. Part # CPC1004NTR Mouser Part # 849-CPC1004NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,890On Order On Order Ship Dates Mfr. #: CPC1004NTR Stock: 0 On Order: 890 Expected 1/13/2027 6,000 Expected 1/25/2027 Factory Lead-Time: 36 Weeks	Cut Tape ₩5,030.8 ₩4,932.2 Reel ₩3,368 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009NTR IXYS Integrated Circuits 1: ₩4,269.9 11,741On Order End of Life	Mfr. Part # CPC1009NTR Mouser Part # 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	11,741On Order On Order Ship Dates Mfr. #: CPC1009NTR Stock: 0 On Order: 9,741 Expected 7/6/2027 2,000 Expected 8/2/2027 Factory Lead-Time: 36 Weeks	Cut Tape ₩4,269.9 ₩3,889.4 ₩3,579.4 ₩3,466.6 View Reel ₩2,762 ₩3,353.9 ₩3,213 ₩3,072.1 ₩2,762 ₩2,762 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1225NTR IXYS Integrated Circuits 1: ₩5,030.8 9,920Expected 8/12/2027 End of Life	Mfr. Part # CPC1225NTR Mouser Part # 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 8/12/2027	Cut Tape ₩5,030.8 ₩4,974.5 Reel ₩3,396.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GSTR IXYS Integrated Circuits 1: ₩9,159.8 12,166On Order End of Life	Mfr. Part # CPC1510GSTR Mouser Part # 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	12,166On Order On Order Ship Dates Mfr. #: CPC1510GSTR Stock: 0 On Order: 7,166 Expected 4/19/2027 5,000 TBD Factory Lead-Time: 54 Weeks	Cut Tape ₩9,159.8 ₩8,173.4 ₩7,807 ₩7,750.6 Reel ₩7,750.6 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1560GS IXYS Integrated Circuits 1: ₩11,780.9 3,298On Order End of Life	Mfr. Part # CPC1560GS Mouser Part # 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. #: CPC1560GS Stock: 0 On Order: 998 Expected 11/9/2026 1,300 Expected 6/28/2027 1,000 Expected 12/8/2027 Factory Lead-Time: 54 Weeks	₩11,780.9 ₩11,048.1 ₩9,822.1 ₩9,328.9 View ₩8,835.7 ₩8,243.8	Min.: 1 Mult.: 1	PCB Mount		MOSFET
Solid State Relays - PCB Mount SPST i4-PAC 600V CPC1977J IXYS Integrated Circuits 1: ₩32,087.5 1,483On Order End of Life	Mfr. Part # CPC1977J Mouser Part # 849-CPC1977J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST i4-PAC 600V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,483On Order On Order Ship Dates Mfr. #: CPC1977J Stock: 0 On Order: 8 Expected 1/25/2027 1,475 TBD Factory Lead-Time: 54 Weeks	₩32,087.5 ₩28,663.1 ₩27,338.5 ₩26,352 ₩22,166.7	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264	MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1978J IXYS Integrated Circuits 1: ₩35,906.4 860On Order End of Life	Mfr. Part # CPC1978J Mouser Part # 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. #: CPC1978J Stock: 0 On Order: 160 Expected 1/13/2027 375 Expected 5/6/2027 325 Expected 6/18/2027 Factory Lead-Time: 54 Weeks	₩35,906.4 ₩33,003.5 ₩31,270.1 ₩29,536.8	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264	MOSFET
Solid State Relays - PCB Mount SPST iso PLUS-264 CPC1979J IXYS Integrated Circuits 1: ₩56,678 6,034On Order End of Life	Mfr. Part # CPC1979J Mouser Part # 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. #: CPC1979J Stock: 0 On Order: 3,159 Expected 12/18/2026 2,875 Expected 10/18/2027 Factory Lead-Time: 54 Weeks	₩56,678 ₩50,688.9 ₩48,307.4 ₩46,545.9	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264	MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation CPC1983Y IXYS Integrated Circuits 1: ₩15,120.7 7,435On Order End of Life	Mfr. Part # CPC1983Y Mouser Part # 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. #: CPC1983Y Stock: 0 On Order: 3,935 Expected 12/21/2026 3,500 Expected 2/8/2027 Factory Lead-Time: 40 Weeks	₩15,120.7 ₩13,852.4 ₩12,725.1 ₩12,175.5 View ₩11,456.8 ₩10,935.4	Min.: 1 Mult.: 1	PCB Mount	SIP-4	MOSFET
Solid State Relays - PCB Mount RELAY, SS ICS CPC1983YE IXYS Integrated Circuits 1: ₩15,430.7 11,766On Order End of Life	Mfr. Part # CPC1983YE Mouser Part # 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	11,766On Order On Order Ship Dates Mfr. #: CPC1983YE Stock: 0 On Order: 5,916 Expected 11/18/2026 5,850 Expected 11/20/2026 Factory Lead-Time: 37 Weeks	₩15,430.7 ₩14,359.7 ₩13,133.7 ₩12,682.8 View ₩12,245.9 ₩11,696.4	Min.: 1 Mult.: 1	PCB Mount	SIP-4	MOSFET