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.

Mga Resulta: 287
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Series
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay
Datasheet
231,576May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 400 mA 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.184 mm (0.086 in) CPC1014
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP
Datasheet
164,906May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 75 mA 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.184 mm (0.086 in) CPC1006
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST NO Relay
Datasheet
46,633May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 600 mA 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.5 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.03 mm (0.08 in) CPC1018
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
77,669May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 150 mA 100 VDC 1 Form A (SPST-NO) 900 mVDC to 1.5 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.03 mm (0.08 in) CPC1008
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
28,728May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.184 mm (0.086 in) CPC1035
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 250mA SSR
Datasheet
2,034May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 250 mA 400 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) PAA191
IXYS Integrated Circuits Solid State Relays - PCB Mount DPST-NO/NO 8PIN DIP
Datasheet
2,023May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 250 mA 400 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) PAA140
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 350V 100mA Solid State Relay
Datasheet
10,357May Stock
Available ang MouseReel
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.184 mm (0.086 in) CPC1035
IXYS Integrated Circuits Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay
Datasheet
160May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 650 mA 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) 20.879 mm (0.822 in) CPC1986
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole 1-Form-A, 250V,250mA
Datasheet
966May Stock
Available ang MouseReel
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel PCB Mount 100 mA 800 VDC 1 Form A (SPST-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) 2.159 mm (0.085 in) PLA171
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V 90mA Single OptoMOS Relay
Datasheet
692May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 90 mA 600 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SMD DIP-4 MOSFET 50 mA - 40 C + 85 C 6.35 mm (0.25 in) 4.572 mm (0.18 in) 3.3 mm (0.13 in) CPC1393
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
475May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 3.4 A 250 VDC 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) CPC1727
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V, 0.5mA AC Power Switch
Datasheet
202Inaasahan 8/3/2026
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 250V 200mA Dual Single-Pole
Datasheet
1,129May Stock
Available ang MouseReel
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel PCB Mount 200 mA 250 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) LAA127
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 250mA
Datasheet
1,235May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 250 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) PLA150
IXYS Integrated Circuits Solid State Relays - PCB Mount Single Pole 800V, 100mA SSR
Datasheet
1,313May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 100 mA 800 VDC 1 Form A (SPST-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) 2.159 mm (0.085 in) PLA171
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST i4-PAC 60V
Datasheet
200May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 3.5 A 60 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) CPC1908
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
196May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 1.5 A 600 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC i4-PAC MOSFET 50 mA - 40 C + 85 C 19.914 mm (0.784 in) 5.029 mm (0.198 in) 20.879 mm (0.822 in) CPC1777
IXYS Integrated Circuits Solid State Relays - PCB Mount 250V 200mA Dual Single-Pole
Datasheet
298May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 200 mA 250 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) LAA127
IXYS Integrated Circuits Solid State Relays - PCB Mount SPST-NO 4PIN SOP
Datasheet
4,852May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 350 VDC 1 Form A (SPST-NO) 900 mVDC to 1.5 VDC SOP-4 MOSFET 50 mA - 40 C + 85 C 4.089 mm (0.161 in) 3.81 mm (0.15 in) 2.03 mm (0.08 in) CPC1030
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
564May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 4 A 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.56 VDC i4-PAC MOSFET 50 mA - 40 C + 85 C 19.914 mm (0.784 in) 5.029 mm (0.198 in) 20.879 mm (0.822 in) CPC1708
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 250V 200mA
Datasheet
2,763May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 200 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) LCA127
IXYS Integrated Circuits Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay
Datasheet
851May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 1 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) LCA712
IXYS Integrated Circuits Solid State Relays - PCB Mount Dual 1-Form-A 400V 150mA SSR
Datasheet
1,467May Stock
Available ang MouseReel
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel PCB Mount 150 mA 400 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) PAA110
IXYS Integrated Circuits Solid State Relays - PCB Mount Single-Pole Relay 60V 600mA
Datasheet
326May Stock
Min.: 1
Mult.: 1

Tube PCB Mount 600 mA 60 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) PLA132