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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IXYS Integrated Circuits Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay
Datasheet
424In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay
Datasheet
489In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V Single Pole SIP Power Relay
Datasheet
100In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay
Datasheet
50In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
149In Stock
Min.: 1
Mult.: 1

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

IXYS Integrated Circuits Solid State Relays - PCB Mount 100V 300mA Double Pole Relay
Datasheet
359In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 100V 300mA Double Pole Relay
Datasheet
309In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
96In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
6In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole
Datasheet
146In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 170mA Dual Single-Pole
Datasheet
5In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount DUAL POLE
Datasheet
20In Stock
100Expected 5/21/2026
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole
Datasheet
85In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole
Datasheet
93In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 170mA Dual Single-Pole
Datasheet
159In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole
Datasheet
90In Stock
Min.: 1
Mult.: 1

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

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
12In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
53In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
2In Stock
3.050On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA
Datasheet
100In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA
Datasheet
94In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN SMT
Datasheet
340In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount RELAY OPTO 170MA SP-NO 6-SMD
Datasheet
10In Stock
150Expected 3/11/2026
Min.: 1
Mult.: 1