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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 (SGD) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP CPC1593G IXYS Integrated Circuits 1: $8.87 499Expected 1/2/2027 End of Life	Mfr. Part No. CPC1593G Mouser Part No 849-CPC1593G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	499Expected 1/2/2027	$8.87 $7.90 $7.55 $7.28 View $7.03 $6.20	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R CPC1593GSTR IXYS Integrated Circuits 1: $8.47 1,742Expected 4/11/2027 End of Life	Mfr. Part No. CPC1593GSTR Mouser Part No 849-CPC1593GSTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,742Expected 4/11/2027	Cut Tape $8.47 $7.55 $7.21 $6.96 Reel $6.07 View $6.73 $6.41 $6.27 $6.04 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1779J IXYS Integrated Circuits 1: $37.45 100On Order End of Life	Mfr. Part No. CPC1779J Mouser Part No 849-CPC1779J 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	100On Order	$37.45 $33.78 $32.12 $30.76	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SIP CPC1906Y IXYS Integrated Circuits 1: $17.01 291Expected 23/7/2027 End of Life	Mfr. Part No. CPC1906Y Mouser Part No 849-CPC1906Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 4PIN SIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	291Expected 23/7/2027	$17.01 $15.16 $14.44 $13.98 View $13.48 $11.79	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch CPC1943GS IXYS Integrated Circuits 1: $18.54 250Expected 14/12/2026 End of Life	Mfr. Part No. CPC1943GS Mouser Part No 849-CPC1943GS End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	250Expected 14/12/2026	$18.54 $14.48 $12.96 $12.51	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A CPC2907B IXYS Integrated Circuits 1: $28.49 785On Order End of Life	Mfr. Part No. CPC2907B Mouser Part No 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. No: CPC2907B Stock: 0 On Order: 435 Expected 3/11/2026 350 Expected 13/11/2026 Factory Lead Time: 39 Weeks	$28.49 $25.35 $23.28 $22.49 $21.72	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110LSTR IXYS Integrated Circuits 1: $5.94 2,000Expected 8/2/2027 End of Life	Mfr. Part No. LCA110LSTR Mouser Part No 849-LCA110LSTR 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	2,000Expected 8/2/2027	Cut Tape $5.94 $5.43 $5.00 $4.80 View Reel $4.12 $4.64 $4.42 $4.27 $4.12 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA182S IXYS Integrated Circuits 1: $7.34 499On Order End of Life	Mfr. Part No. LCA182S Mouser Part No 849-LCA182S 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	499On Order On Order Ship Dates Mfr. No: LCA182S Stock: 0 On Order: 249 Expected 19/5/2027 250 Expected 9/6/2027 Factory Lead Time: 36 Weeks	$7.34 $6.62 $6.12 $5.81 View $5.51 $5.26 $4.86	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN SMD PLA140S IXYS Integrated Circuits 1: $12.87 200Expected 15/3/2027	Mfr. Part No. PLA140S Mouser Part No 849-PLA140S	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	200Expected 15/3/2027	$12.87 $11.82 $10.89 $10.44 View $10.04 $9.59	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1225N IXYS Integrated Circuits 1: $5.14 501Expected 13/1/2027 End of Life	Mfr. Part No. CPC1225N Mouser Part No 849-CPC1225N 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	501Expected 13/1/2027	$5.14 $4.81 $4.28 $4.07 View $3.94 $3.77 $3.64	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay CPC1926Y IXYS Integrated Circuits 1: $15.37 188Expected 23/11/2026 End of Life	Mfr. Part No. CPC1926Y Mouser Part No 849-CPC1926Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	188Expected 23/11/2026	$15.37 $14.06 $12.66 $12.14 View $11.61 $11.08	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A LCA710RTR IXYS Integrated Circuits 1,000: $8.79 Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. LCA710RTR Mouser Part No 849-LCA710RTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 35 Weeks	Reel $8.79	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP OAA160 IXYS Integrated Circuits 1: $16.54 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OAA160 Mouser Part No 849-OAA160	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	Non-Stocked Lead-Time 36 Weeks	$16.54 $14.73 $14.08 $13.59 View $13.12 $12.53	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR OAA160STR IXYS Integrated Circuits 1: $15.93 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OAA160STR Mouser Part No 849-OAA160STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Cut Tape $15.93 $14.20 $13.56 $13.10 Reel $11.26 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay OMA160STR IXYS Integrated Circuits 1,000: $6.15 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OMA160STR Mouser Part No 849-OMA160STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel $6.15	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110L IXYS Integrated Circuits 100: $17.83 Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. PAA110L Mouser Part No 849-PAA110L	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	Non-Stocked Lead-Time 35 Weeks	$17.83	Min.: 100 Mult.: 50
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110LS IXYS Integrated Circuits 1: $18.81 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA110LS Mouser Part No 849-PAA110LS	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	Non-Stocked Lead-Time 36 Weeks	$18.81 $17.58 $16.77 $15.88 $14.16	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110LSTR IXYS Integrated Circuits 1,000: $13.02 Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. PAA110LSTR Mouser Part No 849-PAA110LSTR	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	Non-Stocked Lead-Time 35 Weeks	Reel $13.02	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount DUAL POLE CIRCUITS PAA127 IXYS Integrated Circuits 1: $10.04 Non-Stocked	Mfr. Part No. PAA127 Mouser Part No 849-PAA127	IXYS Integrated Circuits	Solid State Relays - PCB Mount DUAL POLE CIRCUITS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked	$10.04 $9.41 $8.36 $7.94 View $7.52 $7.06 $6.81 $6.58	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual Single-Pole 1-Form-A, 280V,200mA PAA127STR IXYS Integrated Circuits 1,000: $6.30 Non-Stocked	Mfr. Part No. PAA127STR Mouser Part No 849-PAA127STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual Single-Pole 1-Form-A, 280V,200mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked	Reel $6.30	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA140L IXYS Integrated Circuits 100: $16.33 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA140L Mouser Part No 849-PAA140L	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	Non-Stocked Lead-Time 36 Weeks	$16.33	Min.: 100 Mult.: 50
Solid State Relays - PCB Mount Single Pole Dual 1-Form-A Relay PAA140LSTR IXYS Integrated Circuits 1,000: $14.20 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA140LSTR Mouser Part No 849-PAA140LSTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole Dual 1-Form-A Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel $14.20	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA190 IXYS Integrated Circuits 100: $14.28 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190 Mouser Part No 849-PAA190	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	Non-Stocked Lead-Time 36 Weeks	$14.28	Min.: 100 Mult.: 50
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA190S IXYS Integrated Circuits 100: $14.28 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190S Mouser Part No 849-PAA190S	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	Non-Stocked Lead-Time 36 Weeks	$14.28	Min.: 100 Mult.: 50
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA190STR IXYS Integrated Circuits 1,000: $12.25 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190STR Mouser Part No 849-PAA190STR	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	Non-Stocked Lead-Time 36 Weeks	Reel $12.25	Min.: 1,000 Mult.: 1,000 : 1,000