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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 100V 300mA Double Pole Relay LAA108STR IXYS Integrated Circuits 1: $5.32 7,000On Order End of Life	Mfr. Part # LAA108STR Mouser Part # 849-LAA108STR 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	7,000On Order On Order Ship Dates Mfr. #: LAA108STR Stock: 0 On Order: 5,000 Expected 7/28/2027 2,000 Expected 8/12/2027 Factory Lead-Time: 36 Weeks	Cut Tape $5.32 $4.81 $4.44 $4.21 View Reel $3.49 $4.01 $3.83 $3.70 $3.49 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out CPC1976YX6 IXYS Integrated Circuits 1: $10.60 455Expected 4/6/2027	Mfr. Part # CPC1976YX6 Mouser Part # 849-CPC1976YX6	IXYS Integrated Circuits	Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	455Expected 4/6/2027	$10.60 $8.65 $7.49 $7.01 View $6.77 Quote	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1030N IXYS Integrated Circuits 1: $3.94 3,617On Order End of Life	Mfr. Part # CPC1030N Mouser Part # 849-CPC1030N 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	3,617On Order On Order Ship Dates Mfr. #: CPC1030N Stock: 0 On Order: 1,417 Expected 4/5/2027 2,200 Expected 4/19/2027 Factory Lead-Time: 23 Weeks	$3.94 $3.51 $3.36 $3.23 View $3.11 $2.95 $2.87 $2.77	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1030NTR IXYS Integrated Circuits 1: $3.81 4,000Expected 3/8/2027 End of Life	Mfr. Part # CPC1030NTR Mouser Part # 849-CPC1030NTR 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	4,000Expected 3/8/2027	Cut Tape $3.81 $3.49 $3.21 $3.10 View Reel $2.60 $2.98 $2.84 $2.75 $2.65 $2.60 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394G IXYS Integrated Circuits 1: $5.00 500Expected 2/3/2027 End of Life	Mfr. Part # CPC1394G Mouser Part # 849-CPC1394G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	500Expected 2/3/2027	$5.00 $4.57 $4.29 $4.14 View $4.00 $3.79 $3.69	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GS IXYS Integrated Circuits 1: $6.94 2,502On Order End of Life	Mfr. Part # CPC1510GS Mouser Part # 849-CPC1510GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	2,502On Order On Order Ship Dates Mfr. #: CPC1510GS Stock: 0 On Order: 1,752 Expected 1/14/2027 750 Expected 1/14/2028 Factory Lead-Time: 67 Weeks	$6.94 $6.09 $5.80 $5.60 View $5.41 $5.16	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1563GS IXYS Integrated Circuits 1: $6.68 1,100Expected 4/15/2027 End of Life	Mfr. Part # CPC1563GS Mouser Part # 849-CPC1563GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,100Expected 4/15/2027	$6.68 $6.11 $5.62 $5.32 View $5.14 $4.90	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP CPC1593G IXYS Integrated Circuits 1: $6.52 499Expected 12/7/2026 End of Life	Mfr. Part # CPC1593G Mouser Part # 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 12/7/2026	$6.52 $5.81 $5.55 $5.35 View $5.17 $4.56	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R CPC1593GSTR IXYS Integrated Circuits 1: $6.23 1,742Expected 3/4/2027 End of Life	Mfr. Part # CPC1593GSTR Mouser Part # 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 3/4/2027	Cut Tape $6.23 $5.55 $5.30 $5.12 Reel $4.46 View $4.95 $4.71 $4.61 $4.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1779J IXYS Integrated Circuits 1: $27.54 100Expected 12/20/2027 End of Life	Mfr. Part # CPC1779J Mouser Part # 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	100Expected 12/20/2027	$27.54 $24.84 $23.62 $22.62	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 4PIN SIP CPC1906Y IXYS Integrated Circuits 1: $12.51 291Expected 12/7/2026 End of Life	Mfr. Part # CPC1906Y Mouser Part # 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 12/7/2026	$12.51 $11.15 $10.62 $10.28 View $9.91 $8.67	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch CPC1943GS IXYS Integrated Circuits 1: $13.63 250Expected 12/14/2026 End of Life	Mfr. Part # CPC1943GS Mouser Part # 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 12/14/2026	$13.63 $10.65 $9.53 $9.20	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual Power Relay 60V, 1-Form-A CPC2907B IXYS Integrated Circuits 1: $20.95 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 11/9/2026 350 Expected 11/13/2026 Factory Lead-Time: 39 Weeks	$20.95 $18.64 $17.12 $16.54 $15.97	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110LSTR IXYS Integrated Circuits 1: $4.37 2,000Expected 1/13/2027 End of Life	Mfr. Part # LCA110LSTR Mouser Part # 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 1/13/2027	Cut Tape $4.37 $3.99 $3.68 $3.53 View Reel $3.03 $3.41 $3.25 $3.14 $3.03 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1225N IXYS Integrated Circuits 1: $3.78 326Expected 1/13/2027 End of Life	Mfr. Part # CPC1225N Mouser Part # 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	326Expected 1/13/2027	$3.78 $3.54 $3.15 $2.99 View $2.90 $2.77 $2.68	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay CPC1926Y IXYS Integrated Circuits 1: $11.30 188Expected 11/23/2026 End of Life	Mfr. Part # CPC1926Y Mouser Part # 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 11/23/2026	$11.30 $10.34 $9.31 $8.93 View $8.54 $8.15	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA110LS IXYS Integrated Circuits 1: $4.66 249Expected 6/30/2027 End of Life	Mfr. Part # LCA110LS Mouser Part # 849-LCA110LS 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	249Expected 6/30/2027	$4.66 $4.37 $3.88 $3.54 View $3.40 $3.13 $3.01	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120L IXYS Integrated Circuits 1: $6.21 95Expected 7/5/2027 End of Life	Mfr. Part # LCA120L Mouser Part # 849-LCA120L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	95Expected 7/5/2027	$6.21 $6.17 $5.49 $5.20 View $4.91 $4.81 $4.74 $4.66 $4.64	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA182S IXYS Integrated Circuits 1: $5.40 249Expected 6/9/2027 End of Life	Mfr. Part # LCA182S Mouser Part # 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	249Expected 6/9/2027	$5.40 $4.87 $4.50 $4.27 View $4.05 $3.87 $3.57	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount DUAL POLE CIRCUITS PAA127 IXYS Integrated Circuits 1: $7.38 Non-Stocked	Mfr. Part # PAA127 Mouser Part # 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	$7.38 $6.92 $6.15 $5.84 View $5.53 $5.19 $5.01 $4.84	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Dual Single-Pole 1-Form-A, 280V,200mA PAA127STR IXYS Integrated Circuits 1,000: $4.63 Non-Stocked	Mfr. Part # PAA127STR Mouser Part # 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 $4.63	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount SP Open Relay 6-Pin Surface Mount PLA192ESTR IXYS Integrated Circuits 1,000: $2.49 Non-Stocked	Mfr. Part # PLA192ESTR Mouser Part # 849-PLA192ESTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP Open Relay 6-Pin Surface Mount Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked	Reel $2.49	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount 1-Form-A 60V 150 mA Solid State Relay XAA117STR IXYS Integrated Circuits 1,000: $1.86 Non-Stocked	Mfr. Part # XAA117STR Mouser Part # 849-XAA117STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 150 mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked	Reel $1.86 $1.72	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount RELAY, SS ICS CPC1511Y IXYS Integrated Circuits 1: $11.63 Non-Stocked Lead-Time 23 Weeks End of Life	Mfr. Part # CPC1511Y Mouser Part # 576-CPC1511Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount RELAY, SS ICS Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 23 Weeks	$11.63 $10.90 $9.69 $9.21 View $8.72 $7.98 $7.70 $7.44	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1540G IXYS Integrated Circuits 1: $5.86 Non-Stocked Lead-Time 34 Weeks End of Life	Mfr. Part # CPC1540G Mouser Part # 849-CPC1540G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 34 Weeks	$5.86 $5.22 $4.99 $4.81 View $4.64 $4.43	Min.: 1 Mult.: 1