| PS2521 | High current input transistor output photocoupler | Datasheet*) |
| PS2521-1 | High current input transistor output photocoupler | Datasheet*) |
| PS2521-2 | High current input transistor output photocoupler | Datasheet*) |
| PS2521-4 | High current input transistor output photocoupler | Datasheet*) |
| PS2521L | High current input transistor output photocoupler | Datasheet*) |
| PS2521L-1 | High current input transistor output photocoupler | Datasheet*) |
| PS2521L-2 | High current input transistor output photocoupler | Datasheet*) |
| PS2521L-4 | High current input transistor output photocoupler | Datasheet*) |
| PS2521-1 | High isolation voltage large forward AC input type multi photocoupler. in 4-pin Plastic DIP package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521-2 | High isolation voltage large forward AC input type multi photocoupler. in 8-pin Plastic DIP package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521-4 | High isolation voltage large forward AC input type multi photocoupler. in 16-pin Plastic DIP package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521L-1 | High isolation voltage large forward AC input type multi photocoupler. in 4-pin Gull-wing package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521L-2 | High isolation voltage large forward AC input type multi photocoupler. in 8-pin Gull-wing package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521L-4 | High isolation voltage large forward AC input type multi photocoupler. in 16-pin Gull-wing package. Operational temperature range from -55°C to 100°C. | Datasheet*) |
| PS2521L-1-E3 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
| PS2521L-1-E4 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
| PS2521L-1-F3 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
| PS2521L-1-F4 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
| PS2521L-2-E3 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
| PS2521L-2-E4 | LARGE FORWARD INPUT TYPE HIGH ISOLATION VOLTAGE MULTI PHOTOCOUPLER SIRIES | Datasheet*) |
