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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 (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR PAA191STR IXYS Integrated Circuits 1: £10.98 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 £10.98 £9.77 £9.28 £8.79 View Reel £7.45 £8.29 £7.89 £7.62 £7.45 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Dual 1-Form-A 600V 100mA SSR PAA193STR IXYS Integrated Circuits 1,000: £5.81 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 £5.81	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA110LS IXYS Integrated Circuits 1: £6.25 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	£6.25 £5.86 £5.20 £4.94 £4.57	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single Pole Relay 400V 150mA PLA110LSTR IXYS Integrated Circuits 1: £5.99 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 £5.99 £5.61 £4.99 £4.75 View Reel £3.91 £4.50 £4.20 £4.05 £3.91 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA PLA132STR IXYS Integrated Circuits 1,000: £4.72 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 £4.72	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA140LS IXYS Integrated Circuits 1: £7.39 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	£7.39 £6.95 £6.23 £5.93 View £5.28 £4.93	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA PLA143 IXYS Integrated Circuits 1: £5.87 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	£5.87 £5.50 £4.89 £4.64 View £4.40 £4.13	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA190 IXYS Integrated Circuits 1: £6.25 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	£6.25 £5.57 £5.33 £5.13 View £4.96 £4.55	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA190S IXYS Integrated Circuits 250: £4.48 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA190S Mouser Part No 849-PLA190S	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	£4.48	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA PLA190STR IXYS Integrated Circuits 1,000: £4.25 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA190STR Mouser Part No 849-PLA190STR	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	Reel £4.25	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA PLA191STR IXYS Integrated Circuits 1,000: £4.80 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA191STR Mouser Part No 849-PLA191STR	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 36 Weeks	Reel £4.80	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: £1.87 Non-Stocked	Mfr. Part No. PLA192ESTR Mouser Part No 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 £1.87	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount 1-Form-A, 600V 100mA 5000Vrms Isolation PLA194 IXYS Integrated Circuits 1: £5.40 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA194 Mouser Part No 849-PLA194	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A, 600V 100mA 5000Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£5.40 £5.07 £4.50 £4.27 View £4.05 £3.81	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 600V 100mA 5000Vrms Isolation PLA194S IXYS Integrated Circuits 250: £3.61 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA194S Mouser Part No 849-PLA194S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 100mA 5000Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£3.61	Min.: 250 Mult.: 50
Solid State Relays - PCB Mount 1-Form-A 600V 100mA 5000Vrms Isolation PLA194STR IXYS Integrated Circuits 1,000: £3.47 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. PLA194STR Mouser Part No 849-PLA194STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 600V 100mA 5000Vrms Isolation Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel £3.47	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: £1.40 Non-Stocked	Mfr. Part No. XAA117STR Mouser Part No 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 £1.40 £1.29	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay XAA170 IXYS Integrated Circuits 1: £7.09 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XAA170 Mouser Part No 849-XAA170	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£7.09 £6.64 £5.90 £4.50 View £4.18 £4.17	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay XAA170S IXYS Integrated Circuits 250: £4.91 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XAA170S Mouser Part No 849-XAA170S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£4.91	Min.: 250 Mult.: 50
Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay XAA170STR IXYS Integrated Circuits 1,000: £3.98 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XAA170STR Mouser Part No 849-XAA170STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 350V 100mA Dual-Sing OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel £3.98	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount SPST-NO 6PIN SOP XCA170 IXYS Integrated Circuits 1: £3.37 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XCA170 Mouser Part No 849-XCA170	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN SOP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£3.37 £3.00 £2.87 £2.76 View £2.65 £2.54 £2.32	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN SOP XCA170S IXYS Integrated Circuits 1: £3.54 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XCA170S Mouser Part No 849-XCA170S	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN SOP Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	£3.54 £3.18 £2.85 £2.71 View £2.59 £2.56	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 350V 100mA XCA170STR IXYS Integrated Circuits 1,000: £2.02 Non-Stocked Lead-Time 36 Weeks	Mfr. Part No. XCA170STR Mouser Part No 849-XCA170STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 350V 100mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked Lead-Time 36 Weeks	Reel £2.02	Min.: 1,000 Mult.: 1,000 : 1,000
Solid State Relays - PCB Mount RELAY, SS ICS CPC1511Y IXYS Integrated Circuits 1: £8.73 Non-Stocked Lead-Time 23 Weeks End of Life	Mfr. Part No. CPC1511Y Mouser Part No 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	£8.73 £8.18 £7.27 £6.91 View £6.55 £5.99 £5.78 £5.59	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay CPC1540G IXYS Integrated Circuits 1: £4.40 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	£4.40 £3.92 £3.75 £3.61 View £3.48 £3.33	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay CPC1561B IXYS Integrated Circuits 1: £8.14 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	£8.14 £7.25 £6.92 £6.68 View £6.45 £5.71	Min.: 1 Mult.: 1