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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 SP, Normally-Open OptoMOS Relay CPC1540G IXYS Integrated Circuits 1: $5.86 Non-Stocked Lead-Time 34 Weeks End of Life	Mfr. Part No. CPC1540G Mouser Part No 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
Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay CPC1561B IXYS Integrated Circuits 1: $10.84 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. CPC1561B Mouser Part No 849-CPC1561B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$10.84 $9.66 $9.22 $8.90 View $8.59 $7.61	Min.: 1 Mult.: 1
Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch CPC1943G IXYS Integrated Circuits 1: $15.01 Non-Stocked Lead-Time 43 Weeks End of Life	Mfr. Part No. CPC1943G Mouser Part No 849-CPC1943G 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	Non-Stocked Lead-Time 43 Weeks	$15.01	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch CPC1961G IXYS Integrated Circuits 1: $4.66 Non-Stocked Lead-Time 23 Weeks End of Life	Mfr. Part No. CPC1961G Mouser Part No 849-CPC1961G End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 23 Weeks	$4.66 $4.36 $3.88 $3.68 View $3.53 $3.37 $3.25 $3.14	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch CPC1961GS IXYS Integrated Circuits 1: $4.66 Non-Stocked Lead-Time 23 Weeks End of Life	Mfr. Part No. CPC1961GS Mouser Part No 849-CPC1961GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V 0.2mA AC Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 23 Weeks	$4.66 $4.36 $3.88 $3.68 View $3.53 $3.37 $3.25 $3.14	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch CPC1963GS IXYS Integrated Circuits 1: $12.74 Non-Stocked Lead-Time 47 Weeks End of Life	Mfr. Part No. CPC1963GS Mouser Part No 849-CPC1963GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 47 Weeks	$12.74 $11.34 $10.81 $10.33 View $9.90 $8.72	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount AC Switch w/ Dual Power Outputs CPC1964B IXYS Integrated Circuits Non-Stocked Lead-Time 23 Weeks	Mfr. Part No. CPC1964B Mouser Part No 849-CPC1964B	IXYS Integrated Circuits	Solid State Relays - PCB Mount AC Switch w/ Dual Power Outputs Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 23 Weeks		Request a Quote
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA100 IXYS Integrated Circuits 1: $10.61 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA100 Mouser Part No 849-LAA100 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	Non-Stocked Lead-Time 36 Weeks	$10.61 $9.94 $8.84 $8.39 View $7.95 $7.28	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA100LS IXYS Integrated Circuits 1: $10.29 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA100LS Mouser Part No 849-LAA100LS 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	Non-Stocked Lead-Time 36 Weeks	$10.29 $9.41 $8.66 $8.28 View $7.92 $7.45	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole LAA100LSTR IXYS Integrated Circuits 1: $9.81 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA100LSTR Mouser Part No 849-LAA100LSTR 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	Non-Stocked Lead-Time 36 Weeks	Cut Tape $9.81 $9.49 $9.39 Reel $6.64 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120L IXYS Integrated Circuits 1: $10.62 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA120L Mouser Part No 849-LAA120L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$10.62 $9.95 $8.85 $8.39 $7.64	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole LAA120LS IXYS Integrated Circuits 1: $10.62 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA120LS Mouser Part No 849-LAA120LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$10.62 $9.95 $8.85 $8.39 $7.64	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole LAA125L IXYS Integrated Circuits 1: $9.72 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA125L Mouser Part No 849-LAA125L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$9.72 $8.67 $8.28 $7.98 View $7.71 $7.23	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127L IXYS Integrated Circuits 1: $12.10 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA127L Mouser Part No 849-LAA127L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$12.10 $10.79 $10.30 $9.94	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole LAA127LSTR IXYS Integrated Circuits 1: $11.97 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LAA127LSTR Mouser Part No 849-LAA127LSTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Cut Tape $11.97 $10.64 $10.11 $9.58 View Reel $8.11 $9.12 $8.70 $8.41 $8.11 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA100 IXYS Integrated Circuits 1: $6.33 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA100 Mouser Part No 849-LCA100 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	Non-Stocked Lead-Time 36 Weeks	$6.33 $5.93 $5.27 $5.00 View $4.74 $4.50	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA100LS IXYS Integrated Circuits 1: $6.21 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA100LS Mouser Part No 849-LCA100LS 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	Non-Stocked Lead-Time 36 Weeks	$6.21 $5.53	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA100LSTR IXYS Integrated Circuits 1: $6.27 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA100LSTR Mouser Part No 849-LCA100LSTR 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	Non-Stocked Lead-Time 36 Weeks	Cut Tape $6.27 $5.88 $5.22 $4.96 View Reel $4.15 $4.70 $4.46 $4.31 $4.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA LCA100STR IXYS Integrated Circuits 1: $5.88 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA100STR Mouser Part No 849-LCA100STR 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	Non-Stocked Lead-Time 36 Weeks	Cut Tape $5.88 $5.73 $5.72 Reel $4.05 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA120LSTR IXYS Integrated Circuits 1: $6.40 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA120LSTR Mouser Part No 849-LCA120LSTR 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	Non-Stocked Lead-Time 36 Weeks	Cut Tape $6.40 $5.70 $5.39 $5.16 View Reel $4.27 $4.94 $4.70 $4.54 $4.27 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA LCA125L IXYS Integrated Circuits 1: $7.81 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA125L Mouser Part No 849-LCA125L End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$7.81 $7.32 $6.51 $6.18 View $5.86 $5.50	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A,300V,170mA LCA125LS IXYS Integrated Circuits 1: $7.82 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA125LS Mouser Part No 849-LCA125LS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A,300V,170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$7.82 $7.33 $6.52 $6.18 $5.74	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA LCA125S IXYS Integrated Circuits 1: $7.69 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA125S Mouser Part No 849-LCA125S End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	$7.69 $7.21 $6.41 $6.09 View $5.77 $5.41	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA LCA127L IXYS Integrated Circuits 1: $7.88 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA127L Mouser Part No 849-LCA127L 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	Non-Stocked Lead-Time 36 Weeks	$7.88 $7.38 $6.56 $6.23 View $5.90 $5.51	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA LCA129 IXYS Integrated Circuits 1: $5.77 Non-Stocked Lead-Time 36 Weeks End of Life	Mfr. Part No. LCA129 Mouser Part No 849-LCA129 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	Non-Stocked Lead-Time 36 Weeks	$5.77 $5.40 $4.80 $4.56 View $4.32 $4.12	Min.: 1 Mult.: 1