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: 297
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Description Datasheet Availability Pricing (SEK) 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 Single-Pole Relay 400V 250mA
Datasheet
9 000Expected 2027-02-08
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 400V 140mA
Datasheet
600Expected 2026-09-25
Min.: 1
Mult.: 1

PCB Mount SMD DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 250V 200mA Solid State Relay
Datasheet
1 782Expected 2026-10-16
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
1 100Expected 2027-01-01
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 600V 6-Pin SM T/R
Datasheet
1 752Expected 2027-01-13
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
100Expected 2026-12-04
Min.: 1
Mult.: 1

PCB Mount i4-PAC MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SIP
Datasheet
276Expected 2026-12-11
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 MOSFET
IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch
Datasheet
250Expected 2026-11-23
Min.: 1
Mult.: 1

SMD/SMT SMD-DIP-6
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
2 000Expected 2026-10-19
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 60V 1000 mA SSR w/optic MOSFET
Datasheet
2 000Expected 2027-01-18
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay
Datasheet
1 416On Order
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR
Datasheet
300Expected 2026-12-21
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA
Datasheet
1 825On Order
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V Single Pole SIP Power Relay
Datasheet
200On Order
Min.: 1
Mult.: 1

PCB Mount ISOPLUS264 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP-NO SS OptoMOS Power Relay
Datasheet
150On Order
Min.: 1
Mult.: 1

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole
Datasheet
48Expected 2026-08-19
Min.: 1
Mult.: 1

PCB Mount SMD DIP-8 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN SMD
Datasheet
200Expected 2027-01-25
Min.: 1
Mult.: 1

PCB Mount SMD DIP-6 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole Relay 400V 140mA
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 500
Mult.: 100

PCB Mount SMD DIP-4 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 600V,120mA 5000Vrms Isolation
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 500
Mult.: 100

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
950Factory Stock Available
More Info Available
Min.: 1
Mult.: 1


IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay
Datasheet
Non-Stocked Lead-Time 34 Weeks
Min.: 500
Mult.: 50

PCB Mount MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount 60V, 1A, Single Pole, Normally Open Current Limiting Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 1
Mult.: 1

PCB Mount SOIC-16 MOSFET
IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 500
Mult.: 50

IXYS Integrated Circuits Solid State Relays - PCB Mount SP, Normally-Open OptoMOS Relay
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 1 000
Mult.: 1 000
: 1 000

IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch
Datasheet
1 550Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Through Hole DIP-6