# SG90 9 g Micro Servo

> SG90 9 g analog micro servo: 4.8–6 V supply (5 V typical), 180° travel, 1.8 kgf·cm stall torque per the datasheet (1.7 kg·cm measured by ProtoSupplies), 0.1 s/60°, 360 mA measured stall current, 10 mA idle, nylon gears, 22.2 x 11.8 mm case, 24 cm lead with a 3-pin 0.1″ connector.

- Manufacturer: Generic
- Part number: SG90
- Category: Actuators
- Canonical page: https://www.xirkit.io/products/generic-sg90-9-g-micro-servo-ab4a
- Pinout: https://www.xirkit.io/products/generic-sg90-9-g-micro-servo-ab4a/pinout
- Structured JSON: https://www.xirkit.io/products/generic-sg90-9-g-micro-servo-ab4a/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Actuator type | pwm_servo |
| Gearbox | nylon gear train |
| Peak torque | 0.177 N·m |
| No-load speed | 100 rpm |
| Rated voltage | 6 V |
| Encoder | potentiometer |
| Control interface | PWM |
| Control modes | position (180°) |
| Dimensions | 32.2 × 11.8 × 32 mm |
| Operating temperature | 0 to 55 °C |

## Pinout (3 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| PWM | 1×3 female 0.1″ connector | signal | — | pwm | — | — | — | — | — | — | — |
| VCC | 1×3 female 0.1″ connector | supply | — | vcc | — | — | — | — | — | — | — |
| GND | 1×3 female 0.1″ connector | ground | — | ground | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| protosupplies.com | 3.59 USD | in_stock | 2026-10-13 | https://protosupplies.com/product/servo-motor-micro-sg90/ |

## FAQ

**How much does the SG90 9 g Micro Servo cost?**

From $3.59 at protosupplies.com. Prices are observed unit prices before tax and shipping.

**What are the SG90 9 g Micro Servo dimensions?**

32.2 × 11.8 × 32 mm. A STEP model is available for enclosure fit checks.

**Where does this SG90 9 g Micro Servo data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [SG90 9 g Micro Servo datasheet](https://protosupplies.com/product/servo-motor-micro-sg90/)
- [protosupplies.com listing](https://protosupplies.com/product/servo-motor-micro-sg90/)

## Part graph

### Variants

- [MG90S Metal Gear Micro Servo](https://www.xirkit.io/products/generic-mg90s-metal-gear-micro-servo-40e6) — Metal-gear version of the SG90 9 g micro servo: same 3-wire PWM interface and micro case class, 2.2 vs 1.8 kgf·cm stall torque, 13.4 vs 9 g