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| 4-pin DIP | SOP | Small SOP | Ultra-small Flat-lead |
||
|---|---|---|---|---|---|
| Standard | Single | PS2501 series PS2501A series PS2513 series PS2561 series PS2561A series PS2561B series PS2581 series PS2581A series |
PS270x series PS2701A series PS2761B series |
PS2801 series PS2801C series PS2841 series PS2861 series |
PS291x series |
| Darlington | PS25x2 series | PS2702-1 | PS2802-1/-4 | - |
|
| AC Input | Single | PS25x5 series |
PS27x5 series PS2705A-1 |
PS28x5 series PS2805C series |
PS2915-1 |
| Darlington | PS2506 series | - | - | - | |
| Low Input Current | PS2503 series | PS271x series | PS281x series | PS291x series | |
| High Collector to Emitter Voltage | PS253x series | PS2733-1 | PS283x series | PS2933-1 |
|
| Large Input Current | DC Input | PS2521 series | - | - | - |
| AC Input | PS2525 series | - | - | - | |