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.

All Results (298)

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA
Datasheet
1,697On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole Relay 400V 140mA
Datasheet
271Expected 2026-05-19
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST i4-PAC 60V
Datasheet
200On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST 1 Form A
Datasheet
331On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
2,200Factory Stock Available
More Info Available
Min.: 500
Mult.: 100

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
950Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch
Datasheet
1,550Factory Stock Available
More Info Available
Min.: 250
Mult.: 50

IXYS Integrated Circuits Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch
Datasheet
400Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch
Datasheet
2,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
250Factory Stock Available
More Info Available
Min.: 250
Mult.: 50

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole
Datasheet
3,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole
Datasheet
5,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA
Datasheet
1,850Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 300V 170mA
Datasheet
1,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA
Datasheet
3,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR
Datasheet
50Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR
Datasheet
16,150Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA
Datasheet
350Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA
Datasheet
1,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 150mA
Datasheet
25,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA
Datasheet
39,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000
Reel: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole Relay 400V 140mA
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 500
Mult.: 50

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 1,000
Mult.: 1,000
Reel: 1,000