The CPC1231N is a normally-closed, single-pole solid state relay with a 350 V blocking voltage and 120 mA rms DC load current, designed for telecom switching and medical equipment isolation. It uses optically coupled MOSFET technology with 1500 V rms input-to-output isolation and a maximum on-resistance of 30 Ω. The device is packaged in a 4-pin SOP with dimensions of 3.81 × 3.81 × 0.48 mm, offering board space savings of up to 20% compared to competing 4-pin SOP relays. It operates from -40°C to +85°C and meets UL, CSA, and TUV EN 62368-1 safety standards. With a moisture sensitivity level of MSL 3 and ESD sensitivity per JESD-625, it is suitable for reflow soldering with a maximum body temperature of 260°C for 30 seconds. The part is not for new designs.
The OptoMOS® line of solid state relays uses discrete semiconductor components and the patented OptoMOS® architecture to deliver fast, reliable, bounce-free switching in a compact design. From small single-pole, 4-pin relays to multi-pole and multi-function devices, OptoMOS® products are an ideal solid state replacement for larger reed and electromechanical relays. Compared to these old electromagnetic technologies, our OptoMOS® relays offer significantly lower drive current, small package size, no susceptibility to magnetic interaction, and solid state reliability. All of these are key requirements for the design of today's complex, low-power, multi-channel products. The small 4-pin SOP relays combine our state-of-the-art double-molded, vertical-constructio
| Littelfuse, Inc. | |
|---|---|
| Product Category | Solid State Relays |
| Product Number | CPC1231N |
| Product Name | Bidirectional normally closed output |
| Isolation Voltage | 1.5 kilovolts |
