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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay PLA172P IXYS Integrated Circuits 1: $10.15 122In Stock	Mfr. Part # PLA172P Mouser Part # 849-PLA172P	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	122In Stock	$10.15 $9.73 $8.95 $8.15 View $7.94 $7.13 $6.96 $6.79 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR OAA160S IXYS Integrated Circuits 1: $10.72 167In Stock	Mfr. Part # OAA160S Mouser Part # 849-OAA160S	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	167In Stock	$10.72 $9.78 $9.40 $9.08 View $8.96 $8.24 $8.02 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA191 IXYS Integrated Circuits 1: $12.21 90In Stock	Mfr. Part # PAA191 Mouser Part # 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	$12.21 $11.20 $10.81 $10.44 View $9.72 $9.58 $9.47 $9.44 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143S IXYS Integrated Circuits 1: $6.57 244In Stock	Mfr. Part # PLA143S Mouser Part # 849-PLA143S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	244In Stock	$6.57 $6.10 $5.72 $5.51 View $5.30 $5.05 $4.96 $4.90 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA PLA150S IXYS Integrated Circuits 1: $8.76 137In Stock	Mfr. Part # PLA150S Mouser Part # 849-PLA150S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	137In Stock	$8.76 $7.81 $7.46 $6.49 View $6.41 $5.75 $5.63 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA160 IXYS Integrated Circuits 1: $7.34 213In Stock	Mfr. Part # PLA160 Mouser Part # 849-PLA160	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	213In Stock	$7.34 $7.00 $6.91 $5.86 View $5.69 $5.61 $5.53	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972G IXYS Integrated Circuits 1: $2.93 424In Stock End of Life	Mfr. Part # CPC1972G Mouser Part # 849-CPC1972G 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	424In Stock	$2.93 $2.35 $2.04 $1.99 View $1.82 $1.75 Quote	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay CPC1972GS IXYS Integrated Circuits 1: $2.93 489In Stock End of Life	Mfr. Part # CPC1972GS Mouser Part # 849-CPC1972GS 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	489In Stock	$2.93 $2.41 $2.21 $1.98 View $1.89 $1.86 $1.80 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD LCA125 IXYS Integrated Circuits 1: $7.14 160In Stock End of Life	Mfr. Part # LCA125 Mouser Part # 849-LCA125 End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	160In Stock	$7.14 $5.92 $5.54 $5.34 View $5.09 $5.06 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143STR IXYS Integrated Circuits 1: $7.57 318In Stock	Mfr. Part # PLA143STR Mouser Part # 849-PLA143STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	318In Stock	Cut Tape $7.57 $7.10 $6.31 $5.99 Reel $4.54 View $5.68 $5.33 $5.14 $4.52 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA193S IXYS Integrated Circuits 1: $6.43 294In Stock	Mfr. Part # PLA193S Mouser Part # 849-PLA193S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	294In Stock	$6.43 $5.73 $5.47 $5.28 View $5.09 $4.72 $4.63 $4.57 $4.56	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS CPC1004N IXYS Integrated Circuits 1: $3.66 12,100In Stock End of Life	Mfr. Part # CPC1004N Mouser Part # 849-CPC1004N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	12,100In Stock	$3.66 $3.27 $3.09 $2.98 View $2.89 $2.74 $2.66 $2.57	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006N IXYS Integrated Circuits 1: $1.26 138,291In Stock End of Life	Mfr. Part # CPC1006N Mouser Part # 849-CPC1006N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	138,291In Stock	$1.26 $1.13 $1.08 $1.04 View $0.997 $0.955 $0.823 $0.795 $0.747	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1008N IXYS Integrated Circuits 1: $2.44 64,112In Stock End of Life	Mfr. Part # CPC1008N Mouser Part # 849-CPC1008N 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	64,112In Stock	$2.44 $2.27 $2.20 $2.15 View $1.88 $1.82 $1.79 $1.78	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay CPC1019NTR IXYS Integrated Circuits 1: $3.91 60,738In Stock End of Life	Mfr. Part # CPC1019NTR Mouser Part # 849-CPC1019NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	60,738In Stock	Cut Tape $3.91 $3.48 $3.33 $3.21 View Reel $2.66 $3.10 $2.96 $2.86 $2.76 $2.66 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025NTR IXYS Integrated Circuits 1: $3.13 104,956In Stock End of Life	Mfr. Part # CPC1025NTR Mouser Part # 849-CPC1025NTR 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	104,956In Stock	Cut Tape $3.13 $2.93 $2.61 $2.52 Reel $2.16 View $2.43 $2.32 $2.24 $2.16 $1.99 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GRTR IXYS Integrated Circuits 1: $4.16 10,206In Stock End of Life	Mfr. Part # CPC1390GRTR Mouser Part # 849-CPC1390GRTR 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	10,206In Stock	Cut Tape $4.16 $3.72 $3.55 $3.41 Reel $3.01 View $3.29 $3.14 $3.03 $2.90 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP CPC1984Y IXYS Integrated Circuits 1: $17.34 4,075In 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	4,075In Stock	$17.34 $15.45 $14.75 $14.24 View $13.72 $12.99 $12.55 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay CPC1988J IXYS Integrated Circuits 1: $40.40 583In Stock End of Life	Mfr. Part # CPC1988J Mouser Part # 849-CPC1988J 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	583In Stock	$40.40 $38.77 $37.01 $35.74 View $34.51 $32.78 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710S IXYS Integrated Circuits 1: $19.34 4,928In Stock End of Life	Mfr. Part # LAA710S Mouser Part # 849-LAA710S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4,928In Stock	$19.34 $17.23 $16.46 $15.88 View $15.34 $14.56 $14.06 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole LAA710STR IXYS Integrated Circuits 1: $19.59 3,105In Stock End of Life	Mfr. Part # LAA710STR Mouser Part # 849-LAA710STR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,105In Stock	Cut Tape $19.59 $17.45 $16.66 $15.78 View Reel $13.42 $14.91 $14.06 $13.57 $13.42 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out CPC1966YX6 IXYS Integrated Circuits 1: $13.93 2,139In Stock	Mfr. Part # CPC1966YX6 Mouser Part # 849-CPC1966YX6	IXYS Integrated Circuits	Solid State Relays - PCB Mount AC SS Power Switch Dual Power SCR Out Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,139In Stock	$13.93 $12.41 $11.84 $11.38 View $10.86 $10.35 $9.99 $9.81 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP AC Solid State Power Switch CPC1998J IXYS Integrated Circuits 1: $21.75 3,500In Stock 7,700Expected 4/15/2027	Mfr. Part # CPC1998J Mouser Part # 849-CPC1998J	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP AC Solid State Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,500In Stock 7,700Expected 4/15/2027	$21.75 $19.75 $18.81 $17.99 View $17.38 $16.63 $16.21	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA701S IXYS Integrated Circuits 1: $10.31 6,626In Stock	Mfr. Part # LCA701S Mouser Part # 849-LCA701S	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	6,626In Stock	$10.31 $9.19 $8.77 $8.34 View $7.81 $7.47 $7.31 $7.25 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA701STR IXYS Integrated Circuits 1: $9.85 2,664In Stock	Mfr. Part # LCA701STR Mouser Part # 849-LCA701STR	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	2,664In Stock	Cut Tape $9.85 $8.78 $8.38 $8.09 View Reel $6.92 $7.82 $7.43 $7.17 $6.92 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000