Solid State Relays - PCB Mount

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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 (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Packaging	Mounting Style	Load Current Rating	Load Voltage Rating	Relay Contact Form	Control Voltage Range	Package/Case	Output Type	Input Current	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Height	Series
Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay CPC1926Y IXYS Integrated Circuits 1: 9,72 € 188Expected 11/23/2026 End of Life	Mfr. Part No. CPC1926Y Mouser Part No 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	9,72 € 8,89 € 8,01 € 7,68 € 7,37 €	Min.: 1 Mult.: 1	Tube	PCB Mount	700 mA	250 VDC	1 Form A (SPST-NO)	900 mVDC to 1.56 VDC	ISOPLUS264	MOSFET	50 mA	- 40 C	+ 85 C	21.082 mm (0.83 in)	3.302 mm (0.13 in)	10.16 mm (0.4 in)	CPC1926
Solid State Relays - PCB Mount SPST i4-PAC 600V CPC1977J IXYS Integrated Circuits 1: 19,58 € 308In Stock 425Expected 2/19/2027 End of Life	Mfr. Part No. CPC1977J Mouser Part No 849-CPC1977J End of Life	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST i4-PAC 600V Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	308In Stock 425Expected 2/19/2027	19,58 € 17,49 € 16,69 € 16,08 € View 15,51 € 13,73 € 13,47 € Quote	Min.: 1 Mult.: 1	Tube	PCB Mount	1.25 A	600 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	ISOPLUS264	MOSFET	100 mA	- 40 C	+ 85 C	19.914 mm (0.784 in)	5.029 mm (0.198 in)	20.879 mm (0.822 in)	CPC1977
Solid State Relays - PCB Mount Single Pole OptoMOS 1-Form-A, 60V, 1A LCA710RTR IXYS Integrated Circuits 1.000: 5,56 € Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. LCA710RTR Mouser Part No 849-LCA710RTR	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	Non-Stocked Lead-Time 35 Weeks	Reel 5,56 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	1 A	60 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC		MOSFET							LCA710
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP OAA160 IXYS Integrated Circuits 1: 10,46 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OAA160 Mouser Part No 849-OAA160	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	Non-Stocked Lead-Time 36 Weeks	10,46 € 9,31 € 8,90 € 8,59 € View 8,30 € 7,92 €	Min.: 1 Mult.: 1	Tube	PCB Mount	50 mA	250 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	OAA160
Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR OAA160STR IXYS Integrated Circuits 1: 10,07 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OAA160STR Mouser Part No 849-OAA160STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 250V 50mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Cut Tape 10,07 € 8,98 € 8,57 € 8,28 € Reel 7,12 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Reel, Cut Tape, MouseReel	PCB Mount	50 mA	250 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	OAA160
Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay OMA160STR IXYS Integrated Circuits 1.000: 3,90 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. OMA160STR Mouser Part No 849-OMA160STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single 1-Form-A 250V 50mA relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel 3,90 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	50 mA	250 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-6	MOSFET	50 mA			8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	OMA160
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110L IXYS Integrated Circuits 100: 11,27 € Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. PAA110L Mouser Part No 849-PAA110L	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 35 Weeks	11,27 €	Min.: 100 Mult.: 50	Tube	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.5 VDC	DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA110
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110LS IXYS Integrated Circuits 1: 11,89 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA110LS Mouser Part No 849-PAA110LS	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	11,89 € 11,12 € 10,60 € 10,04 € 8,95 €	Min.: 1 Mult.: 1	Tube	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.5 VDC	SMD DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA110
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA110LSTR IXYS Integrated Circuits 1.000: 8,23 € Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. PAA110LSTR Mouser Part No 849-PAA110LSTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 35 Weeks	Reel 8,23 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA			9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA110
Solid State Relays - PCB Mount DUAL POLE CIRCUITS PAA127 IXYS Integrated Circuits 1: 6,35 € Non-Stocked	Mfr. Part No. PAA127 Mouser Part No 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	6,35 € 5,95 € 5,29 € 5,02 € View 4,76 € 4,46 € 4,31 € 4,16 €	Min.: 1 Mult.: 1	Tube	PCB Mount	200 mA	280 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC		MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	4.064 mm (0.16 in)	PAA127
Solid State Relays - PCB Mount Dual Single-Pole 1-Form-A, 280V,200mA PAA127STR IXYS Integrated Circuits 1.000: 3,98 € Non-Stocked	Mfr. Part No. PAA127STR Mouser Part No 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 3,98 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel		200 mA	280 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC									PAA127
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA140L IXYS Integrated Circuits 100: 10,33 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA140L Mouser Part No 849-PAA140L	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	Non-Stocked Lead-Time 36 Weeks	10,33 €	Min.: 100 Mult.: 50	Tube	PCB Mount	250 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.5 VDC	DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA140
Solid State Relays - PCB Mount Single Pole Dual 1-Form-A Relay PAA140LSTR IXYS Integrated Circuits 1.000: 8,98 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA140LSTR Mouser Part No 849-PAA140LSTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole Dual 1-Form-A Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel 8,98 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel				1 Form A (SPST-NO), 1 Form A (SPST-NO)
Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR PAA150STR IXYS Integrated Circuits 1: 11,40 € 1.656Expected 7/26/2027	Mfr. Part No. PAA150STR Mouser Part No 849-PAA150STR	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	1.656Expected 7/26/2027	Cut Tape 11,40 € 10,17 € 9,71 € 9,37 € 9,06 € Reel 8,06 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Reel, Cut Tape, MouseReel	PCB Mount	250 mA	250 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA150
Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP PAA190 IXYS Integrated Circuits 100: 9,03 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190 Mouser Part No 849-PAA190	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	Non-Stocked Lead-Time 36 Weeks	9,03 €	Min.: 100 Mult.: 50	Tube	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	DIP-8	MOSFET	50 mA						PAA190
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA190S IXYS Integrated Circuits 100: 9,03 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190S Mouser Part No 849-PAA190S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	9,03 €	Min.: 100 Mult.: 50	Tube	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA190
Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR PAA190STR IXYS Integrated Circuits 1.000: 7,75 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA190STR Mouser Part No 849-PAA190STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel 7,75 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	150 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA			9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA190
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA191STR IXYS Integrated Circuits 1: 12,58 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA191STR Mouser Part No 849-PAA191STR	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	Non-Stocked Lead-Time 36 Weeks	Cut Tape 12,58 € 11,19 € 10,63 € 10,07 € View Reel 8,53 € 9,50 € 9,04 € 8,73 € 8,53 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Reel, Cut Tape, MouseReel	PCB Mount	250 mA	400 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA			9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA191
Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR PAA193STR IXYS Integrated Circuits 1.000: 6,66 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PAA193STR Mouser Part No 849-PAA193STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel 6,66 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	100 mA	600 VDC	2 Form A (DPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-8	MOSFET	50 mA	- 40 C	+ 85 C	9.652 mm (0.38 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PAA193
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA110LS IXYS Integrated Circuits 1: 7,16 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA110LS Mouser Part No 849-PLA110LS	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	7,16 € 6,71 € 5,96 € 5,66 € 5,23 €	Min.: 1 Mult.: 1	Tube	PCB Mount	150 mA	400 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-6	MOSFET	50 mA			8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PLA110
Solid State Relays - PCB Mount Single Pole Relay 400V 150mA PLA110LSTR IXYS Integrated Circuits 1: 6,86 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA110LSTR Mouser Part No 849-PLA110LSTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single Pole Relay 400V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Cut Tape 6,86 € 6,43 € 5,72 € 5,44 € View Reel 4,48 € 5,15 € 4,81 € 4,64 € 4,48 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Reel, Cut Tape, MouseReel	PCB Mount	150 mA	400 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-6	MOSFET	50 mA			8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PLA110
Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA PLA132STR IXYS Integrated Circuits 1.000: 5,41 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA132STR Mouser Part No 849-PLA132STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel 5,41 €	Min.: 1.000 Mult.: 1.000 : 1.000	Reel	PCB Mount	600 mA	60 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	SMD DIP-6	MOSFET	50 mA			8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PLA132
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA140LS IXYS Integrated Circuits 1: 8,47 € Non-Stocked Lead-Time 35 Weeks	Mfr. Part No. PLA140LS Mouser Part No 849-PLA140LS	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 35 Weeks	8,47 € 7,96 € 7,14 € 6,79 € View 6,05 € 5,65 €	Min.: 1 Mult.: 1	Tube	PCB Mount	250 mA	400 VDC	1 Form A (SPST-NO)	900 mVDC to 1.5 VDC	SMD DIP-6	MOSFET	50 mA	- 40 C	+ 85 C	8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PLA140
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143 IXYS Integrated Circuits 1: 6,72 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA143 Mouser Part No 849-PLA143	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	6,72 € 6,30 € 5,60 € 5,31 € View 5,04 € 4,73 €	Min.: 1 Mult.: 1	Tube	PCB Mount	100 mA	600 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	DIP-6	MOSFET	50 mA	- 40 C	+ 85 C	8.382 mm (0.33 in)	6.35 mm (0.25 in)	3.302 mm (0.13 in)	PLA143
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA190 IXYS Integrated Circuits 1: 7,16 € Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA190 Mouser Part No 849-PLA190	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	7,16 € 6,38 € 6,10 € 5,88 € View 5,68 € 5,21 €	Min.: 1 Mult.: 1	Tube	PCB Mount	150 mA	400 VDC	1 Form A (SPST-NO)	900 mVDC to 1.4 VDC	DIP-6	MOSFET	50 mA						PLA190