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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Qty. RoHS
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP
Datasheet
6.083In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SP AC Solid State Power Switch
Datasheet
5.399In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
16.912In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
14.028In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

IXYS Integrated Circuits Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay
Datasheet
5.051In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET
Datasheet
6.823In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
10.054In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
5.171In Stock
900Expected 2/13/2026
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 800V 100mA
Datasheet
19.327In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP
Datasheet
19.004In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 100V 300mA Solid State Relay
Datasheet
3.508In Stock
4.000Expected 8/17/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR
Datasheet
5.786In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 100V 150mA SSR
Datasheet
5.299In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay
Datasheet
5.582In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount RELAY OPTO NSOIC4 30V 1.2A
Datasheet
5.039In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay
Datasheet
2.600In Stock
6.400On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
3.472In Stock
1.400Expected 8/4/2026
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
5.758In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay
Datasheet
8.002In Stock
4.000Expected 5/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay
Datasheet
3.597In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
1.985In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
4.355In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
4.070In Stock
2.000Expected 5/7/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
3.368In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay
Datasheet
5.361In Stock
Min.: 1
Mult.: 1