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.

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Description Datasheet Availability Pricing (KRW) 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
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Input Current
Minimum Operating Temperature
Maximum Operating Temperature
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Series
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 700mA Solid State Relay
Datasheet
36,346In Stock
20,100Expected 5/12/2027
Min.: 1
Mult.: 1

Tube PCB Mount 700 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) CPC1002
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A SSR 4-Pin SOP
Datasheet
35,472In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel 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 1-Form-A 100V 150mA Solid State Relay
Datasheet
34,787In Stock
90,959On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel 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 250V, 1-Form-A SSR
Datasheet
10,484In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 170 mA 250 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) 2.03 mm (0.08 in) CPC10
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 400mA Solid State Relay
Datasheet
29,261In Stock
38,000Expected 12/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel 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 100V 100mA Solid State Relay
Datasheet
22,193In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 100 mA 100 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) CPC1016
IXYS Integrated Circuits Solid State Relays - PCB Mount SPNO RELAY
Datasheet
264,223In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 100 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) CPC1017
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 100mA Solid State Relay
Datasheet
45,262In Stock
136,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 100 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) CPC1017
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay
Datasheet
29,082In Stock
22,000Expected 11/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel 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 1-Form-A 60V 750mA Solid State Relay
Datasheet
8,972In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 750 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) CPC1019
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 750mA Solid State Relay
Datasheet
72,806In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 750 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) CPC1019
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 30V 1200V Solid State Relay
Datasheet
7,744In Stock
100,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 1.2 A 30 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) CPC1020
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay
Datasheet
7,469In Stock
400Expected 1/6/2027
Min.: 1
Mult.: 1

Tube PCB Mount 120 mA 400 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) CPC1025
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 400V 120mA Solid State Relay
Datasheet
120,042In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Reel, Cut Tape, MouseReel PCB Mount 120 mA 400 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) CPC1025
IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Single OptoMOS Relay
Datasheet
11,831In Stock
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-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) CPC1330
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A 60V 600mA Solid State Relay
Datasheet
5,014In Stock
1,000Expected 4/12/2027
Min.: 1
Mult.: 1

Tube PCB Mount 600 mA 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC 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) CPC1560
IXYS Integrated Circuits Solid State Relays - PCB Mount 1-Form-A; 60V, 4ADC 2500Vrms Isolation
Datasheet
6,895In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 4 A 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SIP-4 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) CPC1706
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
1,556In Stock
3,100On Order
Min.: 1
Mult.: 1

Tube PCB Mount 9 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) 26.162 mm (1.03 in) CPC1709
IXYS Integrated Circuits Solid State Relays - PCB Mount DC Only Single Pole i4-PAC
Datasheet
1,431In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 6.75 A 100 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) CPC1718
IXYS Integrated Circuits Solid State Relays - PCB Mount 8Pin Single Pole NOR Mally Open SS Relay
Datasheet
1,862In Stock
29,725On Order
Min.: 1
Mult.: 1

Tube PCB Mount 6 A 60 VDC 1 Form A (SPST-NO) 900 mVDC to 1.4 VDC SOIC-8 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) CPC1907
IXYS Integrated Circuits Solid State Relays - PCB Mount 100V Single Pole 100V Power Relay
Datasheet
7,228In Stock
7,550Expected 1/25/2027
Min.: 1
Mult.: 1

Tube PCB Mount 5.25 A 100 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) CPC1918
IXYS Integrated Circuits Solid State Relays - PCB Mount 600V AC/DC 1-FORM-A ENHANCED ISO PSIP
Datasheet
3,977In Stock
1,600On Order
Min.: 1
Mult.: 1

Tube PCB Mount 1 A 600 VDC 1 Form A (SPST-NO) 900 mVDC to 1.5 VDC SIP-4 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) CPC1984Y
IXYS Integrated Circuits Solid State Relays - PCB Mount 1000V Single Pole 1000V Power Relay
Datasheet
608In Stock
Min.: 1
Mult.: 1

Tube PCB Mount 900 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) 26.162 mm (1.03 in) CPC1988
IXYS Integrated Circuits Solid State Relays - PCB Mount 350V 120mA Dual Single-Pole
Datasheet
11,269In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel PCB Mount 120 mA 350 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) LAA110
IXYS Integrated Circuits Solid State Relays - PCB Mount 60V 1000mA Dual Single-Pole
Datasheet
5,036In Stock
Min.: 1
Mult.: 1

Tube 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