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
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Description Datasheet Availability Pricing (EUR) 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 Single-Pole Relay 250V 200mA
Datasheet
2 303In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA
Datasheet
1 429In 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 SSR
Datasheet
558In Stock
Min.: 1
Mult.: 1

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
622In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay
Datasheet
537In Stock
1 500On Order
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
269In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR
Datasheet
1 287In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 60V 600mA SSR
Datasheet
1 204In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 250V 250mA SSR
Datasheet
267In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA
Datasheet
1 999In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA
Datasheet
1 589In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 300V 50mA
Datasheet
844In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA
Datasheet
820In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR
Datasheet
1 213In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 800V Normally-Open 6-Pin OptoMOS Relay
Datasheet
429In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA
Datasheet
443In Stock
350Expected 8/14/2026
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA
Datasheet
1 981In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA
Datasheet
1 719In Stock
2 000Expected 11/18/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount RELAY, SS ICS
Datasheet
38In Stock
Min.: 1
Mult.: 1

PCB Mount SIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay
Datasheet
109In 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 1-Form-A 400V 120mA Solid State Relay
Datasheet
3In Stock
800Expected 11/25/2026
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole Relay 400V 140mA
Datasheet
562In Stock
11 000Expected 10/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
137In Stock
600On Order
Min.: 1
Mult.: 1

PCB Mount SMD DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay
Datasheet
268In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
23In Stock
2 950Expected 11/9/2026
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET