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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.
Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A CPC2907B IXYS Integrated Circuits 1: ₩32,682 785On Order End of Life	Mfr. Part # CPC2907B Mouser Part # 849-CPC2907B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	785On Order On Order Ship Dates Mfr. #: CPC2907B Stock: 0 On Order: 435 Expected 11/3/2026 350 Expected 7/19/2027 Factory Lead-Time: 39 Weeks	₩32,682 ₩29,078.4 ₩26,707.2 ₩25,802.4 ₩24,913.2	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108 IXYS Integrated Circuits 1: ₩8,299.2 305In 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	305In Stock	₩8,299.2 ₩7,410 ₩7,066.8 ₩6,817.2 View ₩6,552 ₩6,255.6 ₩6,037.2 ₩5,631.6 ₩5,600.4	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108S IXYS Integrated Circuits 1: ₩8,517.6 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	₩8,517.6 ₩7,784.4 ₩7,176 ₩6,848.4 View ₩6,552 ₩6,255.6 ₩5,756.4	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LS IXYS Integrated Circuits 1: ₩13,915.2 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	₩13,915.2 ₩12,792 ₩12,480 ₩10,280.4 View ₩9,672 ₩9,422.4	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120 IXYS Integrated Circuits 1: ₩15,210 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	₩15,210 ₩14,258.4 ₩13,057.2 ₩11,076 View ₩8,502 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120S IXYS Integrated Circuits 1: ₩14,835.6 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	₩14,835.6 ₩13,228.8 ₩12,636 ₩12,105.6 View ₩10,483.2 ₩10,264.8 ₩10,062 ₩9,999.6 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DUAL POLE LAA125 IXYS Integrated Circuits 1: ₩13,993.2 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	₩13,993.2 ₩12,480 ₩11,918.4 ₩11,497.2 View ₩11,388 ₩10,202.4 ₩10,046.4 ₩9,906 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole LAA125S IXYS Integrated Circuits 1: ₩13,993.2 62In Stock 100Expected 10/30/2026 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 100Expected 10/30/2026	₩13,993.2 ₩12,667.2 ₩12,027.6 ₩10,296 View ₩9,906 ₩9,687.6 ₩9,484.8	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127S IXYS Integrated Circuits 1: ₩19,812 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	₩19,812 ₩17,628 ₩16,801.2 ₩16,052.4 View ₩15,397.2 ₩14,040 ₩13,806 ₩13,572 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP LAA710 IXYS Integrated Circuits 1: ₩31,246.8 11In Stock 1,250On 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 1,250On Order On Order Ship Dates Mfr. #: LAA710 Stock: 11 Can Ship Immediately On Order: 550 Expected 11/20/2026 700 Expected 5/17/2027 Factory Lead-Time: 35 Weeks	₩31,246.8 ₩27,799.2 ₩26,488.8 ₩25,303.2 ₩21,496.8	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN DIP LCA110 IXYS Integrated Circuits 1: ₩7,113.6 56In 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	56In Stock 17,250On Order On Order Ship Dates Mfr. #: LCA110 Stock: 56 Can Ship Immediately On Order: 9,350 Expected 2/19/2027 7,900 Expected 4/21/2027 Factory Lead-Time: 36 Weeks	₩7,113.6 ₩6,349.2 ₩6,068.4 ₩5,850 View ₩5,662.8 ₩5,397.6 ₩5,210.4	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN SMD LCA110S IXYS Integrated Circuits 1: ₩6,770.4 499In 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	499In Stock 800Expected 4/9/2027	₩6,770.4 ₩6,193.2 ₩5,694 ₩5,475.6 View ₩5,288.4 ₩5,038.8 ₩4,726.8	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127LS IXYS Integrated Circuits 1: ₩12,246 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	₩12,246 ₩10,920 ₩10,374 ₩9,921.6 View ₩9,500.4 ₩8,502 ₩8,377.2 ₩8,268 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA140LS IXYS Integrated Circuits 1: ₩23,680.8 41In Stock	Mfr. Part # PAA140LS Mouser Part # 849-PAA140LS	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	41In Stock	₩23,680.8 ₩21,106.8 ₩20,155.2 ₩19,453.2 View ₩18,111.6 ₩17,737.2 ₩17,503.2 ₩17,409.6 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6 Pin SMD LCA710S IXYS Integrated Circuits 1: ₩15,085.2 6,250On Order	Mfr. Part # LCA710S Mouser Part # 849-LCA710S	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6 Pin SMD Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,250On Order On Order Ship Dates Mfr. #: LCA710S Stock: 0 On Order: 400 Expected 10/23/2026 3,100 Expected 1/18/2027 2,750 Expected 7/2/2027 Factory Lead-Time: 36 Weeks	₩15,085.2 ₩13,447.2 ₩12,838.8 ₩11,512.8 View ₩11,060.4 ₩10,202.4	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715S IXYS Integrated Circuits 1: ₩18,252 4,588Expected 6/28/2027	Mfr. Part # LCA715S Mouser Part # 849-LCA715S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4,588Expected 6/28/2027	₩18,252 ₩16,224 ₩15,412.8 ₩14,508 View ₩14,008.8 ₩13,384.8	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA140S IXYS Integrated Circuits 1: ₩23,384.4 2,994On Order	Mfr. Part # PAA140S Mouser Part # 849-PAA140S	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	2,994On Order On Order Ship Dates Mfr. #: PAA140S Stock: 0 On Order: 1,344 Expected 3/1/2027 1,650 Expected 7/7/2027 Factory Lead-Time: 36 Weeks	₩23,384.4 ₩21,528 ₩20,592 ₩19,765.2 ₩18,532.8	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA140STR IXYS Integrated Circuits 1: ₩23,415.6 4,000On Order	Mfr. Part # PAA140STR Mouser Part # 849-PAA140STR	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	4,000On Order On Order Ship Dates Mfr. #: PAA140STR Stock: 0 On Order: 2,000 Expected 1/27/2027 2,000 Expected 4/1/2027 Factory Lead-Time: 36 Weeks	Cut Tape ₩23,415.6 ₩20,810.4 ₩19,765.2 ₩18,735.6 View Reel ₩16,239.6 ₩17,690.4 ₩16,816.8 ₩16,239.6 ₩16,239.6 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA110 IXYS Integrated Circuits 1: ₩12,074.4 4,141Expected 7/30/2027	Mfr. Part # PLA110 Mouser Part # 849-PLA110	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	4,141Expected 7/30/2027	₩12,074.4 ₩10,764 ₩9,921.6 ₩9,578.4 View ₩9,250.8 ₩8,829.6	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA140 IXYS Integrated Circuits 1: ₩15,693.6 9,550On Order	Mfr. Part # PLA140 Mouser Part # 849-PLA140	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	9,550On Order On Order Ship Dates Mfr. #: PLA140 Stock: 0 On Order: 3,700 Expected 1/25/2027 2,650 Expected 3/19/2027 3,200 Expected 7/21/2027 Factory Lead-Time: 35 Weeks	₩15,693.6 ₩14,710.8 ₩13,072.8 ₩12,402 View ₩11,746.8 ₩11,154 ₩10,764 ₩10,389.6	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA140LSTR IXYS Integrated Circuits 1: ₩14,788.8 3,000Expected 7/21/2027	Mfr. Part # PLA140LSTR Mouser Part # 849-PLA140LSTR	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	3,000Expected 7/21/2027	Cut Tape ₩14,788.8 ₩13,540.8 ₩12,448.8 ₩11,918.4 View Reel ₩10,015.2 ₩11,403.6 ₩10,748.4 ₩10,374 ₩10,015.2 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA140STR IXYS Integrated Circuits 1: ₩15,022.8 8,993Expected 5/17/2027	Mfr. Part # PLA140STR Mouser Part # 849-PLA140STR	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	8,993Expected 5/17/2027	Cut Tape ₩15,022.8 ₩14,071.2 ₩12,511.2 ₩11,887.2 View Reel ₩9,703.2 ₩11,263.2 ₩10,405.2 ₩10,046.4 ₩9,703.2 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA PLA170STR IXYS Integrated Circuits 1: ₩10,296 66,656On Order	Mfr. Part # PLA170STR Mouser Part # 849-PLA170STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	66,656On Order On Order Ship Dates Mfr. #: PLA170STR Stock: 0 On Order: 656 Expected 1/25/2027 42,000 Expected 6/23/2027 24,000 Expected 7/30/2027 Factory Lead-Time: 36 Weeks	Cut Tape ₩10,296 ₩9,984 Reel ₩7,066.8 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay CPC1002NTR IXYS Integrated Circuits 1: ₩4,258.8 214,142On 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	214,142On Order On Order Ship Dates Mfr. #: CPC1002NTR Stock: 0 On Order: 20,142 Expected 12/28/2026 50,000 Expected 1/4/2027 64,000 Expected 1/20/2027 80,000 Expected 3/25/2027 Factory Lead-Time: 31 Weeks	Cut Tape ₩4,258.8 ₩4,243.2 ₩2,808 Reel ₩2,808 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay CPC1004NTR IXYS Integrated Circuits 1: ₩5,678.4 8,186On 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	8,186On Order On Order Ship Dates Mfr. #: CPC1004NTR Stock: 0 On Order: 2,186 Expected 1/13/2027 6,000 Expected 7/30/2027 Factory Lead-Time: 36 Weeks	Cut Tape ₩5,678.4 ₩5,163.6 ₩4,789.2 ₩4,602 View Reel ₩3,728.4 ₩4,446 ₩4,243.2 ₩4,102.8 ₩3,962.4 ₩3,728.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,000