The PAA191 is a dual 400V, 250mA normally open solid state relay with 8 ohms maximum on-resistance, using optically coupled MOSFET outputs for 5000V rms input-to-output isolation. It is available in an 8-pin DIP package or surface mount format, with dimensions of 9.652 × 7.620 mm for the DIP variant. The device supports ambient operating temperatures from -40°C to +85°C, and is UL recognized and TUV EN 62368-1 certified. It requires a minimum 5mA input current to activate and exhibits turn-on and turn-off times of up to 3ms and 1ms respectively, with output capacitance of 25pF at 50V and 1MHz.
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. | DigiKey | |
|---|---|---|
| Product Category | Solid State Relays | Solid State Relays |
| Product Number | PAA191 | PAA191-ND |
| Product Name | Bidirectional normally open outputs | Solid State Relays |
| Isolation Voltage | 5 kilovolts | |
| Mounting | PCBoard | |
| Switch Configuration | FormA | |
| Operating Temp | -40 to 185 F (-40 to 85 C) |
