POLOLU-3477 · Pololu
These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 78.13:1 metal spur gearbox. The gearmotor is cylindrical with a diameter of 20 mm, and the D-shaped output shaft is 4 mm in diameter and extends 18 mm from the face plate of the gearbox. Key specifications: voltage no-load performance stall extrapolation 12 V 180 RPM, 80 mA 5.4 kg⋅cm (75 oz⋅in), 1.6 A (Pololu item #3477; also #3489 — soldered / kit / shaft variants)
| Part number | POLOLU-3477 |
|---|---|
| Manufacturer | Pololu |
| Category | Motors & Actuators › DC & Gear Motors |
| Pins | 2 |
| Voltage (max) | 12 V |
| Current | 1.6 A |
78:1 Metal Gearmotor 20Dx43L mm 12V pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | + | passive | Motor terminal M1 (+) |
| 2 | - | passive | Motor terminal M2 (-) |
Schematic symbol and footprint
Footprint: Motor leads, 2 wire pads (off-board motor) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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