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Step-down transformer: more turns on the primary than the secondary, so the secondary voltage is lower and its current capability higher. The symbol shows the ratio — that is what tells you which way it steps.
| Category | Passive Components › Other Passives |
|---|---|
| Package | Off-board |
| Pins | 4 |
Transformer (step-down) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | P1 | passive | Primary winding |
| 2 | P2 | passive | Primary winding |
| 3 | S1 | passive | Secondary winding |
| 4 | S2 | passive | Secondary winding |
Schematic symbol and footprint
Schematic symbol
Footprint: Transformer wire pads (off-board, 4 x 5.08 mm) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.