Optocouplers/Photocouplers – Mouser Singapore

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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 (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Number of Channels	Output Type
Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay CPC1004NTR IXYS Integrated Circuits 1: $4.95 8,186On Order End of Life	Mfr. Part No. CPC1004NTR Mouser Part No 849-CPC1004NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	8,186On Order On Order Ship Dates Mfr. No: CPC1004NTR Stock: 0 On Order: 2,186 Expected 13/1/2027 6,000 Expected 30/7/2027 Factory Lead Time: 36 Weeks	Cut Tape $4.95 $4.50 $4.18 $4.01 View Reel $3.25 $3.88 $3.70 $3.58 $3.45 $3.25 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay CPC1225NTR IXYS Integrated Circuits 1: $4.86 9,920Expected 28/6/2027 End of Life	Mfr. Part No. CPC1225NTR Mouser Part No 849-CPC1225NTR 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	9,920Expected 28/6/2027	Cut Tape $4.86 $4.80 Reel $3.28 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1560GS IXYS Integrated Circuits 1: $11.37 3,298On Order End of Life	Mfr. Part No. CPC1560GS Mouser Part No 849-CPC1560GS End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	3,298On Order On Order Ship Dates Mfr. No: CPC1560GS Stock: 0 On Order: 2,298 Expected 17/5/2027 1,000 Expected 29/12/2027 Factory Lead Time: 54 Weeks	$11.37 $10.66 $9.48 $9.00 View $8.53 $7.96	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1978J IXYS Integrated Circuits 1: $34.65 860On Order End of Life	Mfr. Part No. CPC1978J Mouser Part No 849-CPC1978J 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	860On Order On Order Ship Dates Mfr. No: CPC1978J Stock: 0 On Order: 160 Expected 21/12/2026 375 Expected 31/3/2027 325 Expected 6/5/2027 Factory Lead Time: 54 Weeks	$34.65 $31.85 $30.18 $28.51	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET
Solid State Relays - PCB Mount SPST iso PLUS-264 CPC1979J IXYS Integrated Circuits 1: $54.70 6,034On Order End of Life	Mfr. Part No. CPC1979J Mouser Part No 849-CPC1979J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST iso PLUS-264 Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6,034On Order On Order Ship Dates Mfr. No: CPC1979J Stock: 0 On Order: 209 Expected 2/12/2026 5,825 Expected 10/12/2027 Factory Lead Time: 73 Weeks	$54.70 $48.92 $46.62 $44.92	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264		MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation CPC1983Y IXYS Integrated Circuits 1: $14.59 7,435On Order End of Life	Mfr. Part No. CPC1983Y Mouser Part No 849-CPC1983Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 600V,0.5A 2500Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7,435On Order On Order Ship Dates Mfr. No: CPC1983Y Stock: 0 On Order: 610 Expected 18/11/2026 6,825 Expected 29/7/2027 Factory Lead Time: 40 Weeks	$14.59 $13.37 $12.28 $11.75 View $11.06 $10.55	Min.: 1 Mult.: 1	PCB Mount	SIP-4		MOSFET
Solid State Relays - PCB Mount RELAY, SS ICS CPC1983YE IXYS Integrated Circuits 1: $14.89 12,866On Order End of Life	Mfr. Part No. CPC1983YE Mouser Part No 849-CPC1983YE 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	12,866On Order On Order Ship Dates Mfr. No: CPC1983YE Stock: 0 On Order: 7,016 Expected 18/11/2026 5,850 Expected 15/2/2027 Factory Lead Time: 37 Weeks	$14.89 $13.86 $12.68 $12.24 View $11.82 $11.29	Min.: 1 Mult.: 1	PCB Mount	SIP-4		MOSFET
Solid State Relays - PCB Mount 100V 300mA Double Pole Relay LAA108STR IXYS Integrated Circuits 1: $7.24 7,000On Order End of Life	Mfr. Part No. LAA108STR Mouser Part No 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. No: LAA108STR Stock: 0 On Order: 5,000 Expected 28/7/2027 2,000 Expected 30/7/2027 Factory Lead Time: 36 Weeks	Cut Tape $7.24 $6.54 $6.04 $5.73 View Reel $4.75 $5.45 $5.21 $5.03 $4.75 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-8		MOSFET
Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out CPC1976YX6 IXYS Integrated Circuits 1: $14.42 455Expected 22/2/2027	Mfr. Part No. CPC1976YX6 Mouser Part No 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 22/2/2027	$14.42 $11.76 $10.19 $9.53 View $9.21 Quote	Min.: 1 Mult.: 1	Through Hole		1 Channel	PhotoSCR
Solid State Relays - PCB Mount 1-Form-A SSR LCA701 IXYS Integrated Circuits 1: $16.16 707Expected 16/11/2026	Mfr. Part No. LCA701 Mouser Part No 849-LCA701	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	707Expected 16/11/2026	$16.16 $14.20 $13.53 $12.93 View $12.34 $11.04	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A LCA710R IXYS Integrated Circuits 1: $13.59 946Expected 21/7/2027	Mfr. Part No. LCA710R Mouser Part No 849-LCA710R	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	946Expected 21/7/2027	$13.59 $12.78 $11.45 $10.89 View $10.44 $9.97	Min.: 1 Mult.: 1	PCB Mount			MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712STR IXYS Integrated Circuits 1: $15.29 1,600Expected 21/1/2027	Mfr. Part No. LCA712STR Mouser Part No 849-LCA712STR	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	1,600Expected 21/1/2027	Cut Tape $15.29 $13.63 $13.02 $12.54 View Reel $10.20 $12.01 $11.22 $10.84 $10.20 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount			MOSFET
Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay LCA717S IXYS Integrated Circuits 1: $14.85 2,180Expected 23/10/2026	Mfr. Part No. LCA717S Mouser Part No 849-LCA717S	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	2,180Expected 23/10/2026	$14.85 $13.91 $12.36 $11.75 View $11.14 $10.17 $9.83 $9.49	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA110 IXYS Integrated Circuits 1: $19.46 485On Order	Mfr. Part No. PAA110 Mouser Part No 849-PAA110	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	485On Order On Order Ship Dates Mfr. No: PAA110 Stock: 0 On Order: 85 Expected 13/1/2027 400 Expected 17/5/2027 Factory Lead Time: 35 Weeks	$19.46 $17.30 $16.44 $15.29 $14.76	Min.: 1 Mult.: 1	PCB Mount	DIP-8		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR PAA150 IXYS Integrated Circuits 1: $19.34 192On Order	Mfr. Part No. PAA150 Mouser Part No 849-PAA150	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	192On Order On Order Ship Dates Mfr. No: PAA150 Stock: 0 On Order: 92 Expected 24/5/2027 100 Expected 19/7/2027 Factory Lead Time: 36 Weeks	$19.34 $17.20 $16.39 $15.52 $14.99	Min.: 1 Mult.: 1	PCB Mount	DIP-8		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA191S IXYS Integrated Circuits 1: $19.91 712Expected 17/3/2027	Mfr. Part No. PAA191S Mouser Part No 849-PAA191S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	712Expected 17/3/2027	$19.91 $17.75 $16.95 $16.33 View $15.78 $15.06	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-8		MOSFET
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192S IXYS Integrated Circuits 1: $9.63 1,825On Order	Mfr. Part No. PLA192S Mouser Part No 849-PLA192S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,825On Order On Order Ship Dates Mfr. No: PLA192S Stock: 0 On Order: 875 Expected 23/11/2026 500 Expected 7/12/2026 450 Expected 16/4/2027 Factory Lead Time: 35 Weeks	$9.63 $8.58 $8.20 $7.92 View $7.64 $7.30	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009NTR IXYS Integrated Circuits 1: $4.12 7,741On Order End of Life	Mfr. Part No. CPC1009NTR Mouser Part No 849-CPC1009NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	7,741On Order On Order Ship Dates Mfr. No: CPC1009NTR Stock: 0 On Order: 5,741 Expected 24/5/2027 2,000 Expected 2/8/2027 Factory Lead Time: 36 Weeks	Cut Tape $4.12 $3.75 $3.45 $3.35 View Reel $2.67 $3.24 $3.10 $2.96 $2.67 $2.67 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount SPST-NO 4PIN SOP CPC1030N IXYS Integrated Circuits 1: $5.36 1,817Expected 19/4/2027 End of Life	Mfr. Part No. CPC1030N Mouser Part No 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	1,817Expected 19/4/2027	$5.36 $4.77 $4.57 $4.39 View $4.23 $4.01 $3.90 $3.77	Min.: 1 Mult.: 1	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay CPC1030NTR IXYS Integrated Circuits 1: $5.18 3,631Expected 8/3/2027 End of Life	Mfr. Part No. CPC1030NTR Mouser Part No 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	3,631Expected 8/3/2027	Cut Tape $5.18 $4.75 $4.37 $4.22 View Reel $3.54 $4.05 $3.86 $3.74 $3.60 $3.54 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4		MOSFET
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390GR IXYS Integrated Circuits 1: $6.22 600Expected 2/12/2026 End of Life	Mfr. Part No. CPC1390GR Mouser Part No 849-CPC1390GR 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	600Expected 2/12/2026	$6.22 $5.60 $5.24 $5.02 View $4.81 $4.60	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394G IXYS Integrated Circuits 1: $6.80 500Expected 28/12/2026 End of Life	Mfr. Part No. CPC1394G Mouser Part No 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 28/12/2026	$6.80 $6.22 $5.83 $5.63 View $5.44 $5.15 $5.02	Min.: 1 Mult.: 1	PCB Mount	DIP-4		MOSFET
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GS IXYS Integrated Circuits 1: $9.44 2,502On Order End of Life	Mfr. Part No. CPC1510GS Mouser Part No 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. No: CPC1510GS Stock: 0 On Order: 1,752 Expected 23/11/2026 750 Expected 29/12/2027 Factory Lead Time: 61 Weeks	$9.44 $8.28 $7.89 $7.62 View $7.36 $7.02	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1563GS IXYS Integrated Circuits 1: $9.08 1,100Expected 10/12/2026 End of Life	Mfr. Part No. CPC1563GS Mouser Part No 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 10/12/2026	$9.08 $8.31 $7.64 $7.24 View $6.99 $6.66	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-6		MOSFET
Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP CPC1593G IXYS Integrated Circuits 1: $8.87 499Expected 3/11/2027 End of Life	Mfr. Part No. CPC1593G Mouser Part No 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 3/11/2027	$8.87 $7.90 $7.55 $7.28 View $7.03 $6.20	Min.: 1 Mult.: 1	PCB Mount	DIP-6		MOSFET

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