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	Output Type
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192STR IXYS Integrated Circuits 1: $9.79 34In Stock 2,000Expected 26/7/2027	Mfr. Part No. PLA192STR Mouser Part No 849-PLA192STR	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	34In Stock 2,000Expected 26/7/2027	Cut Tape $9.79 $8.95 $8.31 $7.89 View Reel $6.50 $7.55 $7.17 $6.92 $6.50 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA193 IXYS Integrated Circuits 1: $8.74 51In Stock	Mfr. Part No. PLA193 Mouser Part No 849-PLA193	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	51In Stock	$8.74 $7.79 $7.74 $7.34 View $6.92 $6.23 $6.08 $5.97	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay CPC1008NTR IXYS Integrated Circuits 1: $4.12 80In Stock 90,000On Order End of Life	Mfr. Part No. CPC1008NTR Mouser Part No 849-CPC1008NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 100V 150mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	80In Stock 90,000On Order On Order Ship Dates Mfr. No: CPC1008NTR Stock: 80 Can Dispatch Immediately On Order: 38,000 Expected 30/11/2026 52,000 Expected 25/1/2027 Factory Lead Time: 31 Weeks	Cut Tape $4.12 $3.79 $3.52 $3.40 View Reel $2.72 $3.28 $3.13 $3.02 $2.72 $2.72 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR CPC1009N IXYS Integrated Circuits 1: $4.58 121In Stock 7,900On Order End of Life	Mfr. Part No. CPC1009N Mouser Part No 849-CPC1009N 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	121In Stock 7,900On Order On Order Ship Dates Mfr. No: CPC1009N Stock: 121 Can Dispatch Immediately On Order: 5,000 Expected 15/2/2027 2,900 Expected 24/2/2027 Factory Lead Time: 36 Weeks	$4.58 $4.09 $3.90 $3.77 View $3.64 $3.33 $3.16	Min.: 1 Mult.: 1	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay CPC1014NTR IXYS Integrated Circuits 1: $4.15 725In Stock 86,000On Order End of Life	Mfr. Part No. CPC1014NTR Mouser Part No 849-CPC1014NTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	725In Stock 86,000On Order On Order Ship Dates Mfr. No: CPC1014NTR Stock: 725 Can Dispatch Immediately On Order: 38,000 Expected 28/12/2026 48,000 Expected 5/5/2027 Factory Lead Time: 29 Weeks	Cut Tape $4.15 $3.79 $3.52 $3.44 View Reel $2.72 $3.25 $3.11 $3.01 $2.72 $2.72 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 CPC1018NTR IXYS Integrated Circuits 1: $6.84 48In Stock 22,000Expected 28/12/2026 End of Life	Mfr. Part No. CPC1018NTR Mouser Part No 849-CPC1018NTR 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	48In Stock 22,000Expected 28/12/2026	Cut Tape $6.84 $6.26 $5.75 $5.51 View Reel $4.57 $5.32 $5.07 $4.90 $4.73 $4.57 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCB Mount	SOP-4	MOSFET
Solid State Relays - PCB Mount Single Pole Relay 400V 140mA CPC1390G IXYS Integrated Circuits 1: $6.28 54In Stock 1,400On Order End of Life	Mfr. Part No. CPC1390G Mouser Part No 849-CPC1390G 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	54In Stock 1,400On Order On Order Ship Dates Mfr. No: CPC1390G Stock: 54 Can Dispatch Immediately On Order: 600 Expected 31/3/2027 800 Expected 28/7/2027 Factory Lead Time: 36 Weeks	$6.28 $5.68 $5.36 $5.17 View $4.66 $4.60	Min.: 1 Mult.: 1	PCB Mount	DIP-4	MOSFET
Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay CPC1393GR IXYS Integrated Circuits 1: $6.72 8In Stock End of Life	Mfr. Part No. CPC1393GR Mouser Part No 849-CPC1393GR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	8In Stock	$6.72 $6.30 $5.60 $5.32 View $5.07 $4.84 $4.68	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-4	MOSFET
Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay CPC1393GRTR IXYS Integrated Circuits 1: $6.42 281In Stock 14,000On Order End of Life	Mfr. Part No. CPC1393GRTR Mouser Part No 849-CPC1393GRTR End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	281In Stock 14,000On Order On Order Ship Dates Mfr. No: CPC1393GRTR Stock: 281 Can Dispatch Immediately On Order: 4,000 Expected 13/1/2027 10,000 Expected 15/2/2027 Factory Lead Time: 36 Weeks	Cut Tape $6.42 $6.31 $6.17 Reel $4.37 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	DIP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation CPC1394GR IXYS Integrated Circuits 1: $6.46 68In Stock 600Expected 13/1/2027 End of Life	Mfr. Part No. CPC1394GR Mouser Part No 849-CPC1394GR 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	68In Stock 600Expected 13/1/2027	$6.46 $5.77 $5.51 $5.43 View $5.14 $4.86 $4.73	Min.: 1 Mult.: 1	PCB Mount	SMD DIP-4	MOSFET
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510G IXYS Integrated Circuits 1: $9.57 9In Stock 1,050Expected 19/1/2028 End of Life	Mfr. Part No. CPC1510G Mouser Part No 849-CPC1510G 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	9In Stock 1,050Expected 19/1/2028	$9.57 $8.76 $8.06 $7.70 View $7.37 $6.54	Min.: 1 Mult.: 1	PCB Mount	DIP-6	MOSFET
Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay CPC1510GSTR IXYS Integrated Circuits 1: $9.13 36In Stock 9,000Expected 29/1/2027 End of Life	Mfr. Part No. CPC1510GSTR Mouser Part No 849-CPC1510GSTR 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	36In Stock 9,000Expected 29/1/2027	Cut Tape $9.13 $8.35 $7.68 $7.48 Reel $7.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SMD DIP-6	MOSFET
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1540GSTR IXYS Integrated Circuits 1: $8.05 9In Stock End of Life	Mfr. Part No. CPC1540GSTR Mouser Part No 849-CPC1540GSTR 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	9In Stock	Cut Tape $8.05 $7.19 $6.77 $6.49 Reel $5.51 View $6.22 $5.92 $5.71 $5.14	Min.: 1 Mult.: 1 : 1,000	PCB Mount		MOSFET
Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay CPC1560GSTR IXYS Integrated Circuits 1: $10.76 10In Stock End of Life	Mfr. Part No. CPC1560GSTR Mouser Part No 849-CPC1560GSTR 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	10In Stock	Cut Tape $10.76 $10.08 $10.02 Reel $7.09 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount		MOSFET
Solid State Relays - PCB Mount RELAY, SS ICS CPC1561BTR IXYS Integrated Circuits 1: $15.44 187In Stock 1,000Expected 6/7/2027 End of Life	Mfr. Part No. CPC1561BTR Mouser Part No 849-CPC1561BTR 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	187In Stock 1,000Expected 6/7/2027	Cut Tape $15.44 $14.47 $12.87 $12.23 View Reel $9.86 $11.57 $10.59 $10.23 $9.86 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	PCB Mount	SOIC-16	MOSFET
Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation CPC1706Y IXYS Integrated Circuits 1: $10.02 118In Stock 8,875On Order End of Life	Mfr. Part No. CPC1706Y Mouser Part No 849-CPC1706Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	118In Stock 8,875On Order On Order Ship Dates Mfr. No: CPC1706Y Stock: 118 Can Dispatch Immediately On Order: 3,775 Expected 23/7/2027 5,100 Expected 26/7/2027 Factory Lead Time: 39 Weeks	$10.02 $9.17 $8.51 $7.94 View $7.53 $6.79	Min.: 1 Mult.: 1	PCB Mount	SIP-4	MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1709J IXYS Integrated Circuits 1: $25.06 13In Stock 9,850On Order End of Life	Mfr. Part No. CPC1709J Mouser Part No 849-CPC1709J 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	13In Stock 9,850On Order On Order Ship Dates Mfr. No: CPC1709J Stock: 13 Can Dispatch Immediately On Order: 6,750 Expected 28/7/2027 1,350 Expected 30/7/2027 1,750 Expected 2/8/2027 Factory Lead Time: 36 Weeks	$25.06 $22.29 $20.60 $19.90 $19.20	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1718J IXYS Integrated Circuits 1: $25.72 12In Stock End of Life	Mfr. Part No. CPC1718J Mouser Part No 849-CPC1718J 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	12In Stock	$25.72 $22.92 $21.87 $21.12 View $20.29 $19.26 $18.60 Quote	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1786J IXYS Integrated Circuits 1: $37.17 43In Stock 75Expected 10/2/2028 End of Life	Mfr. Part No. CPC1786J Mouser Part No 849-CPC1786J 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	43In Stock 75Expected 10/2/2028	$37.17 $34.65 $32.83 $31.01 View $29.48 $28.15 $27.19	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	MOSFET
Solid State Relays - PCB Mount DC Only Single Pole i4-PAC CPC1788J IXYS Integrated Circuits 1: $40.46 8In Stock 525On Order End of Life	Mfr. Part No. CPC1788J Mouser Part No 849-CPC1788J 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	8In Stock 525On Order On Order Ship Dates Mfr. No: CPC1788J Stock: 8 Can Dispatch Immediately On Order: 225 Expected 5/4/2027 300 Expected 1/11/2027 Factory Lead Time: 51 Weeks	$40.46 $35.33 $33.74 $32.59	Min.: 1 Mult.: 1	PCB Mount	i4-PAC	MOSFET
Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay CPC1916Y IXYS Integrated Circuits 1: $18.40 6In Stock 1,400On Order End of Life	Mfr. Part No. CPC1916Y Mouser Part No 849-CPC1916Y End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6In Stock 1,400On Order On Order Ship Dates Mfr. No: CPC1916Y Stock: 6 Can Dispatch Immediately On Order: 800 Expected 7/12/2026 600 Expected 7/7/2027 Factory Lead Time: 37 Weeks	$18.40 $16.08 $15.35 $14.82 $14.32	Min.: 1 Mult.: 1	PCB Mount	ISOPLUS264	MOSFET
Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch CPC1963G IXYS Integrated Circuits 1: $16.52 162In Stock End of Life	Mfr. Part No. CPC1963G Mouser Part No 849-CPC1963G 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	162In Stock	$16.52 $14.72 $14.06 $13.56 View $13.07 $12.48 $11.63 $11.51 Quote	Min.: 1 Mult.: 1	PCB Mount		SCR
Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay CPC1967J IXYS Integrated Circuits 1: $55.60 6In Stock 400On Order End of Life	Mfr. Part No. CPC1967J Mouser Part No 849-CPC1967J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount 400V Single Pole 400V Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	6In Stock 400On Order On Order Ship Dates Mfr. No: CPC1967J Stock: 6 Can Dispatch Immediately On Order: 75 Expected 15/2/2027 325 Expected 14/6/2027 Factory Lead Time: 54 Weeks	$55.60 $49.23 $46.88 $44.76	Min.: 1 Mult.: 1	PCB Mount		MOSFET
Triac & SCR Output Optocouplers 400V Single Pole SIP Power Relay CPC1973Y IXYS Integrated Circuits 1: $13.94 131In Stock 100Expected 28/6/2027 End of Life	Mfr. Part No. CPC1973Y Mouser Part No 849-CPC1973Y End of Life	IXYS Integrated Circuits	Triac & SCR Output Optocouplers 400V Single Pole SIP Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	131In Stock 100Expected 28/6/2027	$13.94 $11.46 $10.24 $9.59 View $9.30 Quote	Min.: 1 Mult.: 1	Through Hole	Power SIP
Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay CPC1983B IXYS Integrated Circuits 1: $15.67 50In Stock 100Expected 30/10/2026 End of Life	Mfr. Part No. CPC1983B Mouser Part No 849-CPC1983B End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	50In Stock 100Expected 30/10/2026	$15.67 $14.69 $13.04 $12.39 View $10.73 $10.34 $10.17 $10.08	Min.: 1 Mult.: 1	PCB Mount		MOSFET

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