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: 298
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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 Dual 1-Form-A 250V 50mA SSR
Datasheet
1.032In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 600V 100mA
Datasheet
321In 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; 600V,120mA 5000Vrms Isolation
Datasheet
852In Stock
Min.: 1
Mult.: 1

PCB Mount DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole
Datasheet
298In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR
Datasheet
241In Stock
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP
Datasheet
6.748In 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 60V 400mA Solid State Relay
Datasheet
46.111In 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 60V 100mA Solid State Relay
Datasheet
103.399In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST NO Relay
Datasheet
47.735In Stock
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay
Datasheet
94.531In 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 60V 700mA Solid State Relay
Datasheet
69.301In Stock
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay
Datasheet
50.933In Stock
86.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SS Relay SP, NO 4-PIN SOP OptoMOS
Datasheet
16.933In Stock
Min.: 1
Mult.: 1

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V, 1-Form-A SSR
Datasheet
16.242In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

PCB Mount SOP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay
Datasheet
4.720In Stock
9.575On Order
Min.: 1
Mult.: 1

PCB Mount SOIC-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay
Datasheet
5.236In Stock
2.850On Order
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount RELAY, SS ICS
Datasheet
6.996In Stock
2.925Expected 08/06/2026
Min.: 1
Mult.: 1

PCB Mount SIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP
Datasheet
5.171In Stock
Min.: 1
Mult.: 1

PCB Mount SIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP AC Solid State Power Switch
Datasheet
2.008In Stock
4.625On Order
Min.: 1
Mult.: 1

PCB Mount i4-PAC SCR
IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
8.843In Stock
3.000Expected 12/06/2026
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
12.372In Stock
6.900Expected 15/06/2026
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
4.606In Stock
4.650On Order
Min.: 1
Mult.: 1

PCB Mount DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET
Datasheet
4.940In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
4.359In 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
7.570In Stock
5.000Expected 23/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

PCB Mount SMD DIP-6 MOSFET