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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 (CAD) 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: $14.46 4,817In 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	4,817In Stock	Cut Tape $14.46 $13.55 $12.05 $11.45 View Reel $9.24 $10.84 $9.92 $9.58 $9.24 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: $15.57 4,158In Stock 5,000Expected 2027-06-16	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	4,158In Stock 5,000Expected 2027-06-16	Cut Tape $15.57 $13.87 $13.25 $12.79 View Reel $10.74 $12.36 $11.76 $11.36 $10.74 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: $3.08 30,777In 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	30,777In Stock	Cut Tape $3.08 $2.97 $2.82 $2.72 Reel $2.19 View $2.62 $2.49 $2.42 $2.19 $2.10 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 250V, 1-Form-A SSR CPC1010NTR IXYS Integrated Circuits 1: $5.63 9,284In Stock 6,000Expected 2027-05-24 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 2027-05-24	Cut Tape $5.63 $5.01 $4.80 $4.59 View Reel $3.93 $4.44 $4.23 $4.09 $3.95 $3.93 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount SPNO RELAY CPC1017N IXYS Integrated Circuits 1: $1.24 189,555In Stock 120,000Expected 2027-05-12 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	189,555In Stock 120,000Expected 2027-05-12	$1.24 $1.11 $1.07 $0.851 View $0.818 $0.802 $0.765	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A CPC1020N IXYS Integrated Circuits 1: $9.68 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	$9.68 $8.64 $8.16 $7.82 View $7.33 $6.93 $6.36	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay CPC1020NTR IXYS Integrated Circuits 1: $8.73 104,021In 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	104,021In Stock	Cut Tape $8.73 $7.78 $7.43 $7.17 View Reel $6.13 $6.93 $6.60 $6.36 $6.22 $6.13 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: $4.67 7,425In Stock 400Expected 2027-07-30 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 2027-07-30	$4.67 $4.16 $3.96 $3.83 View $3.67 $3.50 $3.38 $3.27	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1230N IXYS Integrated Circuits 1: $5.41 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	$5.41 $4.94 $4.54 $4.31 View $4.16 $3.96 $3.84 $3.60 $3.48	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1230NTR IXYS Integrated Circuits 1: $5.01 2,649In 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	2,649In Stock	Cut Tape $5.01 $4.69 $4.18 $3.99 View Reel $3.44 $3.86 $3.69 $3.56 $3.44 $3.44 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1708J IXYS Integrated Circuits 1: $27.76 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	$27.76 $24.74 $23.60 $22.80 View $22.02 $20.81 $20.09 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V Single Pole DC Power Relay CPC1726Y IXYS Integrated Circuits 1: $12.08 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	$12.08 $11.32 $10.07 $9.56 View $9.06 $8.45 $8.16 $7.88	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay CPC1907B IXYS Integrated Circuits 1: $17.31 12,617In Stock 17,625Expected 2027-02-12 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	12,617In Stock 17,625Expected 2027-02-12	$17.31 $15.41 $14.66 $14.03 View $13.45 $12.84 $12.40 $11.98 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, NO ISOPLUS-264 CPC1927J IXYS Integrated Circuits 1: $45.96 218In Stock End of Life	Mfr. Part # CPC1927J Mouser Part # 849-CPC1927J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, NO ISOPLUS-264 Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	218In Stock	$45.96 $41.11 $39.24 $37.89 View $36.45 $32.13	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay CPC1968J IXYS Integrated Circuits 1: $65.33 921In Stock 375Expected 2026-11-30 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 2026-11-30	$65.33 $61.16 $55.56	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA110LSTR IXYS Integrated Circuits 1: $12.93 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 $12.93 $11.53 $11.02 $10.63 Reel $9.06 View $10.27 $9.72 $9.39 $8.54 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110STR IXYS Integrated Circuits 1: $5.86 11,199In Stock 4,000Expected 2027-01-13 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	11,199In Stock 4,000Expected 2027-01-13	Cut Tape $5.86 $5.23 $5.00 $4.81 Reel $4.03 View $4.64 $4.44 $4.28 $3.99 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127STR IXYS Integrated Circuits 1: $9.96 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 $9.96 $8.88 $8.48 $8.19 Reel $7.00 View $7.92 $7.53 $7.27 $6.80 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 8-Pin Power SOIC CPC1966B IXYS Integrated Circuits 1: $14.14 1,905In Stock 1,725Expected 2027-03-24	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 2027-03-24	$14.14 $12.60 $12.02 $11.61 View $11.19 $10.47 $10.25 $9.99	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount AC Switch 3A, 600V CPC1966Y IXYS Integrated Circuits 1: $12.38 394In Stock 7,650Expected 2026-11-23	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 2026-11-23	$12.38 $11.03 $10.21 $9.89 View $9.46 $9.09 $8.88 $8.71	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay CPC1976Y IXYS Integrated Circuits 1: $11.13 896In Stock 5,975On 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	896In Stock 5,975On Order On Order Ship Dates Mfr. #: CPC1976Y Stock: 896 Can Ship Immediately On Order: 1,750 Expected 2026-10-22 4,225 Expected 2027-01-08 Factory Lead-Time: 23 Weeks	$11.13 $9.16 $7.98 $7.46 View $7.20 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: $15.98 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	$15.98 $14.24 $13.61 $13.13 View $12.61 $12.05 $11.64 $10.92 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET LCA715 IXYS Integrated Circuits 1: $17.27 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	$17.27 $15.36 $14.63 $13.98 View $13.41 $12.80 $12.37 $11.94 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay LCA717STR IXYS Integrated Circuits 1: $13.74 812In Stock 2,000Expected 2027-07-15	Mfr. Part # LCA717STR Mouser Part # 849-LCA717STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	812In Stock 2,000Expected 2027-07-15	Cut Tape $13.74 $12.24 $11.69 $11.29 View Reel $9.59 $10.90 $10.35 $10.11 $9.59 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR PAA150S IXYS Integrated Circuits 1: $20.95 267In Stock	Mfr. Part # PAA150S Mouser Part # 849-PAA150S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	267In Stock	$20.95 $18.62 $17.70 $16.76 View $15.81 $15.45 $13.65 $13.54 Quote	Min.: 1 Mult.: 1

OptoMOS 1-Form-A (SPST-NO) Solid State Relays

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