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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 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA710STR IXYS Integrated Circuits 1: $10.04 4,792In Stock	Mfr. Part # LCA710STR Mouser Part # 849-LCA710STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	4,792In Stock	Cut Tape $10.04 $9.41 $8.37 $7.95 View Reel $6.42 $7.53 $6.89 $6.65 $6.42 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715STR IXYS Integrated Circuits 1: $10.81 3,639In Stock 5,000Expected 7/30/2027	Mfr. Part # LCA715STR Mouser Part # 849-LCA715STR	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	3,639In Stock 5,000Expected 7/30/2027	Cut Tape $10.81 $9.63 $9.20 $8.88 View Reel $7.46 $8.58 $8.17 $7.89 $7.46 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP CPC1006NTR IXYS Integrated Circuits 1: $2.14 30,277In Stock End of Life	Mfr. Part # CPC1006NTR Mouser Part # 849-CPC1006NTR 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	30,277In Stock	Cut Tape $2.14 $2.06 $1.96 $1.89 Reel $1.52 View $1.82 $1.73 $1.68 $1.52 $1.46 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010NTR IXYS Integrated Circuits 1: $3.91 9,284In Stock 6,000Expected 5/24/2027 End of Life	Mfr. Part # CPC1010NTR Mouser Part # 849-CPC1010NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V, 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9,284In Stock 6,000Expected 5/24/2027	Cut Tape $3.91 $3.48 $3.33 $3.19 View Reel $2.73 $3.08 $2.94 $2.84 $2.74 $2.73 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount SPNO RELAY CPC1017N IXYS Integrated Circuits 1: $0.86 188,979In Stock 120,000Expected 6/23/2027 End of Life	Mfr. Part # CPC1017N Mouser Part # 849-CPC1017N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPNO RELAY Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	188,979In Stock 120,000Expected 6/23/2027	$0.86 $0.769 $0.74 $0.591 View $0.568 $0.557 $0.531	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay CPC1019NTR IXYS Integrated Circuits 1: $3.91 61,647In 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	61,647In Stock	Cut Tape $3.91 $3.48 $3.33 $3.20 View Reel $2.66 $3.09 $2.95 $2.85 $2.75 $2.66 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A CPC1020N IXYS Integrated Circuits 1: $6.72 34,160In Stock End of Life	Mfr. Part # CPC1020N Mouser Part # 849-CPC1020N End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	34,160In Stock	$6.72 $6.00 $5.67 $5.43 View $5.09 $4.81 $4.42	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay CPC1020NTR IXYS Integrated Circuits 1: $6.06 101,817In Stock End of Life	Mfr. Part # CPC1020NTR Mouser Part # 849-CPC1020NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	101,817In Stock	Cut Tape $6.06 $5.40 $5.16 $4.98 View Reel $4.26 $4.81 $4.58 $4.42 $4.32 $4.26 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1025N IXYS Integrated Circuits 1: $3.24 7,425In Stock 400Expected 7/30/2027 End of Life	Mfr. Part # CPC1025N Mouser Part # 849-CPC1025N 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	7,425In Stock 400Expected 7/30/2027	$3.24 $2.89 $2.75 $2.66 View $2.55 $2.43 $2.35 $2.27	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1230N IXYS Integrated Circuits 1: $3.76 1,753In Stock End of Life	Mfr. Part # CPC1230N Mouser Part # 849-CPC1230N 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	1,753In Stock	$3.76 $3.43 $3.15 $2.99 View $2.89 $2.75 $2.67 $2.50 $2.42	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1230NTR IXYS Integrated Circuits 1: $3.48 2,149In Stock End of Life	Mfr. Part # CPC1230NTR Mouser Part # 849-CPC1230NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,149In Stock	Cut Tape $3.48 $3.26 $2.90 $2.77 View Reel $2.39 $2.68 $2.56 $2.47 $2.39 $2.39 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1708J IXYS Integrated Circuits 1: $19.28 492In Stock End of Life	Mfr. Part # CPC1708J Mouser Part # 849-CPC1708J 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	492In Stock	$19.28 $17.18 $16.39 $15.83 View $15.29 $14.45 $13.95 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V Single Pole DC Power Relay CPC1726Y IXYS Integrated Circuits 1: $8.39 572In Stock End of Life	Mfr. Part # CPC1726Y Mouser Part # 849-CPC1726Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V Single Pole DC Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	572In Stock	$8.39 $7.86 $6.99 $6.64 View $6.29 $5.87 $5.67 $5.47	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay CPC1907B IXYS Integrated Circuits 1: $12.02 9,917In Stock 17,625Expected 7/30/2027 End of Life	Mfr. Part # CPC1907B Mouser Part # 849-CPC1907B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	9,917In Stock 17,625Expected 7/30/2027	$12.02 $10.70 $10.18 $9.74 View $9.34 $8.92 $8.61 $8.32 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay CPC1968J IXYS Integrated Circuits 1: $45.37 921In Stock 375Expected 11/9/2026 End of Life	Mfr. Part # CPC1968J Mouser Part # 849-CPC1968J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	921In Stock 375Expected 11/9/2026	$45.37 $42.47 $38.58	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP CPC1984Y IXYS Integrated Circuits 1: $17.34 3,785In 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	3,785In Stock	$17.34 $15.45 $14.75 $14.24 View $13.72 $12.99 $12.54 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LSTR IXYS Integrated Circuits 1: $8.98 698In Stock End of Life	Mfr. Part # LAA110LSTR Mouser Part # 849-LAA110LSTR 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	698In Stock	Cut Tape $8.98 $8.01 $7.65 $7.38 Reel $6.29 View $7.13 $6.75 $6.52 $5.93 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110L IXYS Integrated Circuits 1: $4.38 1,116In Stock End of Life	Mfr. Part # LCA110L Mouser Part # 849-LCA110L 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	1,116In Stock	$4.38 $4.08 $3.90 $3.77 View $3.64 $3.40 $3.25 $3.18 $2.87	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110STR IXYS Integrated Circuits 1: $4.07 9,047In Stock 4,000Expected 8/9/2027 End of Life	Mfr. Part # LCA110STR Mouser Part # 849-LCA110STR 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	9,047In Stock 4,000Expected 8/9/2027	Cut Tape $4.07 $3.63 $3.47 $3.34 Reel $2.80 View $3.22 $3.08 $2.97 $2.77 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127STR IXYS Integrated Circuits 1: $6.92 1,404In Stock End of Life	Mfr. Part # LCA127STR Mouser Part # 849-LCA127STR 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	1,404In Stock	Cut Tape $6.92 $6.17 $5.89 $5.69 Reel $4.86 View $5.50 $5.23 $5.05 $4.72 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 8-Pin Power SOIC CPC1966B IXYS Integrated Circuits 1: $9.82 1,905In Stock 1,725Expected 1/22/2027	Mfr. Part # CPC1966B Mouser Part # 849-CPC1966B	IXYS Integrated Circuits	Solid State Relays - PCB Mount 8-Pin Power SOIC Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,905In Stock 1,725Expected 1/22/2027	$9.82 $8.75 $8.35 $8.06 View $7.77 $7.27 $7.12 $6.94	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount AC Switch 3A, 600V CPC1966Y IXYS Integrated Circuits 1: $8.60 394In Stock 7,650Expected 11/23/2026	Mfr. Part # CPC1966Y Mouser Part # 849-CPC1966Y	IXYS Integrated Circuits	Solid State Relays - PCB Mount AC Switch 3A, 600V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	394In Stock 7,650Expected 11/23/2026	$8.60 $7.66 $7.09 $6.87 View $6.57 $6.31 $6.17 $6.05	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: $7.73 2,696In Stock 4,175On Order	Mfr. Part # CPC1976Y Mouser Part # 849-CPC1976Y	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,696In Stock 4,175On Order On Order Ship Dates Mfr. #: CPC1976Y Stock: 2,696 Can Ship Immediately On Order: 75 Expected 11/4/2026 4,100 Expected 1/8/2027 Factory Lead-Time: 23 Weeks	$7.73 $6.36 $5.54 $5.18 View $5.00 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712S IXYS Integrated Circuits 1: $11.10 283In Stock	Mfr. Part # LCA712S Mouser Part # 849-LCA712S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	283In Stock	$11.10 $9.89 $9.45 $9.12 View $8.76 $8.37 $8.08 $7.58 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715 IXYS Integrated Circuits 1: $11.99 833In Stock	Mfr. Part # LCA715 Mouser Part # 849-LCA715	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	833In Stock	$11.99 $10.67 $10.16 $9.71 View $9.31 $8.89 $8.59 $8.29 Quote	Min.: 1 Mult.: 1