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 (275)

Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V, 1-Form-A SSR
Datasheet
5,040In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 100V 100mA Solid State Relay
Datasheet
3,946In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
3,642In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
1,753In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 120mA Solid State Relay
Datasheet
3,154In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay
Datasheet
1,570In Stock
500Expected 12/9/2026
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay
Datasheet
1,505In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
3,115In Stock
5,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay
Datasheet
2,215In Stock
9,000Expected 1/22/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM
Datasheet
984In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
552In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 250V Single Pole DC Power Relay
Datasheet
572In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
368In Stock
Min.: 1
Mult.: 1

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

IXYS Integrated Circuits Solid State Relays - PCB Mount 5 A 500 V Optic Iso Pwr Sol State Relay
Datasheet
126In Stock
1,050On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay
Datasheet
3,554In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST i4-PAC 600V
Datasheet
808In Stock
425Expected 10/16/2026
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 1000V Single Pole SIP Power Relay
Datasheet
2,823In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 100V 300mA Double Pole Relay
Datasheet
998In Stock
2,000Expected 5/3/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount 120MA DPST 8-DIP
Datasheet
1,053In Stock
4,700On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
598In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
2,373In Stock
100Expected 3/29/2027
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
648In Stock
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
3,980In Stock
17,250On Order
Min.: 1
Mult.: 1

IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
1,406In Stock
Min.: 1
Mult.: 1