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General purpose — the classic switching transistor. NPN in a TO-18.
| Part number | 2N2222 |
|---|---|
| Category | Discrete Semiconductors › Transistors (BJT) |
| Package | TO-18 |
| Pins | 3 |
2N2222 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | E | passive | Emitter |
| 2 | B | input | Base — drive through a resistor |
| 3 | C | passive | Collector |
Schematic symbol and footprint
Schematic symbol
Footprint: TO-18 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.