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.

Results: 287
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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Packaging
Mounting Style
Load Current Rating
Load Voltage Rating
Relay Contact Form
Control Voltage Range
Package/Case
Output Type
Input Current
Minimum Operating Temperature
Maximum Operating Temperature
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Series
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
197In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 1 A 1 kVDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC i4-PAC MOSFET 100 mA - 40 C + 85 C 19.914 mm (0.784 in) 5.029 mm (0.198 in) 26.162 mm (1.03 in) CPC1788
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SIP
Datasheet
251In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 2 A 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC ISOPLUS264 MOSFET 50 mA - 40 C + 85 C 21.082 mm (0.83 in) 3.302 mm (0.13 in) 10.16 mm (0.4 in) CPC1906
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V Single Pole SIP Power Relay
Datasheet
292In Stock
1.400On Order
Min.: 1
Mult.: 1

Tube PCB Mount 2.5 A 100 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC ISOPLUS264 MOSFET 50 mA - 40 C + 85 C 21.082 mm (0.83 in) 3.302 mm (0.13 in) 10.16 mm (0.4 in) CPC1916
IXYS Integrated Circuits Solid State Relays - PCB Mount SP, NO ISOPLUS-264
Datasheet
238In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 2.7 A 250 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC ISOPLUS264 MOSFET 100 mA - 40 C + 85 C 19.914 mm (0.784 in) 5.029 mm (0.198 in) 26.162 mm (1.03 in) CPC1927
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch
Datasheet
202In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 500 mA 20 VAC to 260 VAC 1 Form A (SPST-NO) 900 mVDC to 1.5 VDC SCR 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 3.302 mm (0.13 in) 6.35 mm (0.25 in) CPC1963
IXYS Integrated Circuits Solid State Relays - PCB Mount 8-Pin Power SOIC
Datasheet
1.481In Stock
1.075Expected 12/18/2026
Min.: 1
Mult.: 1

Tube PCB Mount 3 A 20 VAC to 240 VAC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC ISOPLUS264 SCR 50 mA - 40 C + 85 C 21.082 mm (0.83 in) 3.302 mm (0.13 in) 10.16 mm (0.4 in) CPC1966
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST i4-PAC 600V
Datasheet
808In Stock
425Expected 10/2/2026
Min.: 1
Mult.: 1

Tube PCB Mount 1.25 A 600 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC ISOPLUS264 MOSFET 100 mA - 40 C + 85 C 19.914 mm (0.784 in) 5.029 mm (0.198 in) 20.879 mm (0.822 in) CPC1977
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V 300mA Double Pole Relay
Datasheet
581In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 300 mA 100 VDC 2 Form A (DPST-NO) 900 mVDC to 1.4 VDC DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LAA108
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V 300mA Double Pole Relay
Datasheet
2.673In Stock
2.000Expected 2/12/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape, MouseReel PCB Mount 300 mA 100 VDC 2 Form A (DPST-NO) 900 mVDC to 1.4 VDC SMD DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LAA108
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST 1 Form A
Datasheet
611In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 200 mA 250 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LAA127
IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
748In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 1 A 60 VDC 2 Form A (DPST-NO) 900 mVDC to 1.4 VDC DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LAA710
IXYS Integrated Circuits Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole
Datasheet
126In Stock
3.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape, MouseReel PCB Mount 1 A 60 VDC 2 Form A (DPST-NO) 900 mVDC to 1.4 VDC SMD DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LAA710
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
4.802In Stock
17.250On Order
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA110
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
1.006In Stock
400Expected 8/13/2026
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA110
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN SMD
Datasheet
5.229In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA110
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 6PIN DIP
Datasheet
3.671In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 170 mA 250 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA120
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 170mA
Datasheet
2.596In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape, MouseReel PCB Mount 170 mA 250 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA120
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA
Datasheet
1.429In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape, MouseReel PCB Mount 200 mA 250 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA127
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
836In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA182
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 350V 120mA
Datasheet
3.435In Stock
2.000Expected 8/13/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape, MouseReel PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA182
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR
Datasheet
560In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 1.5 A 100 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA701
IXYS Integrated Circuits Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay
Datasheet
1.734In Stock
1.000Expected 8/13/2026
Min.: 1
Mult.: 1
: 1.000

Reel, Cut Tape PCB Mount 1.5 A 100 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA701
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 2200mA SSR w/optic MOSFET
Datasheet
372In Stock
250Expected 8/13/2026
Min.: 1
Mult.: 1

Tube PCB Mount 2.2 A 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA715
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form 30V 2000 mA Solid State Relay
Datasheet
537In Stock
1.500On Order
Min.: 1
Mult.: 1

Tube PCB Mount 2 A 30 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-6 MOSFET 50 mA - 40 C + 85 C 8.382 mm (0.33 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) LCA717
IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
269In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 600 mA 60 VDC 2 Form A (DPST-NO) 900 mVDC to 1.4 VDC DIP-8 MOSFET 50 mA - 40 C + 85 C 9.652 mm (0.38 in) 6.35 mm (0.25 in) 3.302 mm (0.13 in) PAA132