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.

Types of Optocouplers/Photocouplers
Change category view
Results: 297
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (PLN) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Mounting Style
Package/Case
Number of Channels
Output Type
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6 Pin SMD
Datasheet
3 407In Stock
3 500On Order
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET
Datasheet
7 357In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
4 208In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
11 819In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay
Datasheet
2 347In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
3 000In Stock
3 700Expected 11/13/2026
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA
Datasheet
11 937In Stock
32 000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay
Datasheet
991In Stock
150 000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR
Datasheet
2 360In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V, 1-Form-A SSR
Datasheet
5 060In Stock
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay
Datasheet
3 956In Stock
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
3 642In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay
Datasheet
3 241In Stock
2 000Expected 9/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
1 253In Stock
700Expected 8/10/2026
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
3 245In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay
Datasheet
1 570In Stock
500Expected 10/30/2026
Min.: 1
Mult.: 1

PCB Mount SMD DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole Relay 400V 140mA
Datasheet
1 023In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay
Datasheet
1 505In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay
Datasheet
520In Stock
8 000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
522In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
1 227In Stock
4 000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay
Datasheet
3 490In Stock
2 000Expected 3/29/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin DIP
Datasheet
1 227In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM
Datasheet
984In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V Single Pole DC Power Relay
Datasheet
572In Stock
Min.: 1
Mult.: 1

PCB Mount i4-PAC MOSFET