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Power transistor. NPN in a TO-218.
| Part number | BD545 |
|---|---|
| Category | Discrete Semiconductors › Transistors (BJT) |
| Package | TO-218 |
| Pins | 3 |
BD545 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | B | input | Base — needs real current; these are power devices |
| 2 | C | passive | Collector |
| 3 | E | passive | Emitter |
Schematic symbol and footprint
Schematic symbol
Footprint: TO-218 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.