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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Results: 276
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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 DC Only Single Pole i4-PAC
Datasheet
368In Stock
Min.: 1
Mult.: 1

PCB Mount i4-PAC MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay
Datasheet
7.214In Stock
7.550Expected 1/25/2027
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP, NO ISOPLUS-264
Datasheet
238In Stock
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP
Datasheet
4.882In Stock
675Expected 2/11/2027
Min.: 1
Mult.: 1

PCB Mount SIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
13.381In Stock
4.000Expected 12/11/2026
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 250V 170mA
Datasheet
2.046In 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 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 Single-Pole Relay 350V 120mA
Datasheet
778In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
5.385In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 8-Pin Power SOIC
Datasheet
1.431In Stock
1.075Expected 9/14/2026
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 SCR
IXYS Integrated Circuits Triac & SCR Output Optocouplers 600V Single Pole SIP Power Relay
Datasheet
1.711In Stock
5.975On Order
Min.: 1
Mult.: 1

Through Hole SIP-4 1 Channel PhotoSCR
IXYS Integrated Circuits Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out
Datasheet
356In Stock
Min.: 1
Mult.: 1

Through Hole 1 Channel PhotoSCR
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR
Datasheet
347In 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
518In Stock
350Expected 2/19/2027
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
1.207In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

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
1.256In Stock
Min.: 1
Mult.: 1

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 Dual 1-Form-A 250V 250mA SSR
Datasheet
948In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
3.700Expected 11/16/2026
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 400V 250mA
Datasheet
949In 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
1.089In 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
570In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR
Datasheet
1.031In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET